WO2022073306A1 - 膈肌的超声测量方法及系统 - Google Patents
膈肌的超声测量方法及系统 Download PDFInfo
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- WO2022073306A1 WO2022073306A1 PCT/CN2020/141223 CN2020141223W WO2022073306A1 WO 2022073306 A1 WO2022073306 A1 WO 2022073306A1 CN 2020141223 W CN2020141223 W CN 2020141223W WO 2022073306 A1 WO2022073306 A1 WO 2022073306A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/46—Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient
- A61B8/461—Displaying means of special interest
- A61B8/463—Displaying means of special interest characterised by displaying multiple images or images and diagnostic data on one display
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/486—Diagnostic techniques involving arbitrary m-mode
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/5215—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving processing of medical diagnostic data
- A61B8/5223—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving processing of medical diagnostic data for extracting a diagnostic or physiological parameter from medical diagnostic data
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/5284—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving retrospective matching to a physiological signal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/483—Diagnostic techniques involving the acquisition of a 3D volume of data
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/488—Diagnostic techniques involving Doppler signals
Definitions
- the present application relates to the technical field of medical imaging, and in particular to a method and system for ultrasonic measurement of diaphragm.
- ICUs Intensive care units
- the ICU has begun to predict and assess the timing of weaning of patients by means of ultrasound.
- ultrasound is used to assess the state of the patient's diaphragm to help doctors predict the timing of weaning.
- a method for ultrasonic measurement of diaphragm comprising:
- the subject tissue includes the diaphragm.
- identifying the diaphragm region of the subject from the image of the subject's tissue according to the image features of the diaphragm includes:
- An operation of the operator to identify the subject's diaphragm region in the image of the subject's tissue is detected, and the subject's diaphragm region in the image of the subject's tissue is acquired.
- the target M-line is an M-line whose included angle with the subject's diaphragm region satisfies a first preset condition.
- the target M-line is an anatomical M-line whose included angle with the subject's diaphragm region satisfies a first preset condition.
- the first preset condition is that the included angle is between 60 degrees and 90 degrees.
- the target M-line is an anatomical M-line passing through a designated area of the subject's diaphragm region.
- the obtaining an M image along the target M-line based on the target M-line includes:
- the ultrasonic probe is excited to transmit a second ultrasonic wave to the subject's tissue region where the target M-line is located, and the returned echo of the second ultrasonic wave is received to obtain the second ultrasonic wave. echo signal;
- the acquisition of measurement parameters of the diaphragm region of the subject based on the M image of the target M-line includes:
- the M image diaphragm region of the subject is identified in the M image of the target M line;
- the measured parameters of the subject's diaphragm area are obtained according to the M-map diaphragm area.
- the subject is in a state of waiting for use of the breathing apparatus, and the method further includes:
- prompt information is output to prompt the operator whether to withdraw the subject's breathing apparatus.
- the measured parameters of the diaphragm area include at least one of the range of motion of the diaphragm area, the speed of motion of the diaphragm area, the thickness of the diaphragm area, the thickening rate of the diaphragm area, and the strain rate of the diaphragm area.
- the measurement parameter is the range of motion
- obtaining the measurement parameter of the subject's diaphragm region according to the M-map diaphragm region includes:
- the determined extremely high position and extremely low position of the diaphragm muscle region of the M image in the M image determine the movement amplitude of the diaphragm muscle region of the subject.
- the position of the target M-line determine the area corresponding to the diaphragm muscle area of the M image in the image of the subject's tissue, so as to obtain the area corresponding to the diaphragm muscle area of the M image;
- a first-type marker is displayed on the area corresponding to the diaphragm region of the M-map, and the position of the first-type marker is dynamically updated to describe the movement track of the region corresponding to the diaphragm region of the M-map.
- the direction of the first type of identification represents the movement direction of the region corresponding to the diaphragm region of the M image.
- the length of the first type of identification represents the motion amplitude of the region corresponding to the diaphragm muscle region of the M map.
- the target M-line includes a plurality of target M-lines
- the M map diaphragm muscle region includes a plurality of M map diaphragm muscle regions, wherein each M map diaphragm muscle region corresponds to a target M line;
- the corresponding region of the M map diaphragm muscle region obtained according to the target M line includes a plurality of M map diaphragm muscle region corresponding regions, wherein each M map diaphragm muscle region corresponding region corresponds to one M map diaphragm muscle region;
- Described first type identification comprises a plurality of first type identification, wherein each first type identification is corresponding with an M map diaphragm muscle region;
- the plurality of first type identifications are displayed in different colors.
- the trend graph is displayed.
- the trend graph corresponding to any one of the multiple M-picture diaphragm muscle regions and the color of the first type identifier corresponding to any one of the M-picture diaphragm muscle regions are the same or related to each other.
- the measurement parameter is a thickness or a thickening rate
- the M map diaphragm region includes the identified upper edge region and the lower edge region
- the subject's diaphragm region is obtained according to the M map diaphragm region.
- the measurement parameters include:
- the thickness or thickening rate of the diaphragm region of the subject is determined.
- the target M-line determine the area corresponding to the upper edge area and the lower edge area of the diaphragm muscle region of the M map in the image of the subject's tissue, so as to obtain the corresponding area of the diaphragm muscle edge area of the M map;
- a second type of identification is displayed on the region corresponding to the edge region of the diaphragm of the M image, and the position of the second type of identification is dynamically updated to describe the movement track of the region corresponding to the edge region of the diaphragm of the M image.
- the target M-line includes a plurality of target M-lines
- the M map diaphragm muscle region includes a plurality of M map diaphragm muscle regions, wherein each M map diaphragm muscle region corresponds to a target M line;
- the corresponding region of the M image diaphragm edge region obtained according to the target M line includes a plurality of M map diaphragm muscle edge region corresponding regions, wherein each M map diaphragm muscle edge region corresponding region corresponds to one M map diaphragm muscle region, and each M image
- the area corresponding to the edge area of the diaphragm includes the area corresponding to the upper edge area and the area corresponding to the lower edge area;
- Described second type identification comprises a plurality of second type identification, wherein each second type identification is corresponding with an M map diaphragm muscle region;
- the trend graph is displayed.
- the trend graph corresponding to any one of the multiple M-picture diaphragm muscle regions and the color of the second type identification corresponding to any one of the M-picture diaphragm muscle regions are the same or associated with each other.
- the measurement parameter is the range of motion
- prompt information is output, including:
- the measurement parameter is the motion amplitude
- the method further includes:
- the motion amplitude and the preset physiological signal of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the measurement parameter is the motion amplitude
- the method further includes:
- the measurement parameter is the thickening rate
- prompt information is output, including:
- the measurement parameter is a thickening rate
- the method further includes:
- the thickening rate and the preset physiological signal of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the measurement parameter is a thickening rate
- the method further includes:
- the thickening rate and the preset measurement index of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the preset tissue includes cardiac tissue
- the preset measurement index includes at least one of the following: left ventricular ejection fraction, diastolic function index, cardiac output, left ventricular outflow tract velocity time integral VTI and lower Vena Cava IVC parameters; or
- the preset tissue includes lung tissue, and the preset measurement index includes B-line number or lung ultrasound score.
- the preset physiological signal includes at least one of the following: breathing frequency, breathing volume, spontaneous breathing tidal volume, heart rate, oxygen saturation, arterial blood gas index, blood pressure, systolic blood pressure, hemoglobin, body temperature, coma index and metabolic index.
- an ultrasonic measurement method comprising:
- the subject tissue includes the diaphragm.
- a method for ultrasonic measurement of diaphragm comprising:
- the subject tissue includes the diaphragm.
- a method for ultrasonic measurement of diaphragm comprising:
- the subject tissue includes the diaphragm.
- identifying the diaphragm region of the subject from the first image in the multiple frames of images according to the image features of the diaphragm includes:
- the operation of the operator to identify the diaphragm muscle region of the subject in the first image of the multi-frame images is detected, and the diaphragm muscle region of the subject is acquired.
- the tracking area is selected from the diaphragm region of the subject in the first image, including:
- At least three tracking regions with equal distances from the septum are selected in the diaphragm region of the subject in the first image.
- it also includes:
- prompt information is output to prompt the operator whether to withdraw the subject's breathing apparatus.
- the measured parameters of the diaphragm area include at least one of the range of motion of the diaphragm area, the speed of motion of the diaphragm area, the thickness of the diaphragm area, the thickening rate of the diaphragm area, and the strain rate of the diaphragm area.
- the measurement parameter is motion amplitude
- determining the measurement parameter of the diaphragm region of the subject based on the motion trajectory includes:
- the range of motion of the subject's diaphragm region is determined.
- a first-type marker is displayed on the tracking area, and the position of the first-type marker is dynamically updated to describe the movement track of the tracking area.
- the direction of the first type of identification represents the movement direction of the tracking area.
- the identification length of the first type of identification represents the motion amplitude of the tracking area.
- the tracking area includes a plurality of tracking areas
- the first type identification includes a plurality of first type identifications, wherein each first type identification corresponds to a tracking area;
- the plurality of first type identifications are displayed in different colors.
- the trend graph is displayed.
- the trend graph corresponding to any one of the multiple tracking areas and the color of the first type identifier corresponding to the any one of the tracking areas are the same or related to each other.
- the measurement parameter is thickness or a thickening rate
- the motion trajectory includes the acquired upper and lower border regions, wherein determining the measurement parameter of the subject's diaphragm region based on the motion trajectory includes: :
- the thickness or thickening rate of the diaphragm region of the subject is determined.
- a second type of identification is displayed on the region corresponding to the edge region of the motion track, and the position of the second type of identification is dynamically updated to describe the motion track of the region corresponding to the edge region of the motion track.
- the tracking area includes a plurality of tracking areas
- the motion track includes a plurality of motion tracks, wherein each motion track corresponds to a tracking area;
- the corresponding region of the motion track edge region obtained according to the tracking region includes a plurality of motion track edge region corresponding regions, wherein each motion track edge region corresponding region corresponds to one motion track, and each motion track edge region corresponding region includes the upper The area corresponding to the edge area and the area corresponding to the lower edge area;
- the second type identification includes a plurality of second type identifications, wherein each second type identification corresponds to a motion track;
- the trend graph is displayed.
- it also includes:
- the trend graph corresponding to any one of the plurality of motion trajectories and the color of the second type identifier corresponding to the any one of the motion trajectories are the same or correlated with each other.
- the measurement parameter is the range of motion
- prompt information is output, including:
- the output prompts the operator that the subject needs to continue to use the breathing apparatus, or, when the motion amplitude is greater than the first threshold, the output prompts the operator to withdraw information on the subject's breathing apparatus.
- the measurement parameter is the motion amplitude
- the method further includes:
- the motion amplitude and the preset physiological signal of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the measurement parameter is the motion amplitude
- the method further includes:
- the measurement parameter is the thickening rate
- prompt information is output, including:
- the output prompts the operator that the subject needs to continue to use the breathing apparatus, or when the thickening rate is greater than the second threshold, the output prompts the operator that Withdraw information from the subject's respiratory equipment.
- the measurement parameter is a thickening rate
- the method further includes:
- the thickening rate and the preset physiological signal of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the measurement parameter is a thickening rate
- the method further includes:
- the thickening rate and the preset measurement index of the subject are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the subject's breathing apparatus.
- the preset tissue includes cardiac tissue
- the preset measurement index includes at least one of the following: left ventricular ejection fraction, diastolic function index, cardiac output, left ventricular outflow tract velocity time integral VTI and lower Vena Cava IVC parameters; or
- the preset tissue includes lung tissue, and the preset measurement index includes B-line number or lung ultrasound score.
- the preset physiological parameters include at least one of the following: breathing frequency, breathing volume, spontaneous breathing tidal volume, heart rate, oxygen saturation, arterial blood gas index, blood pressure, systolic blood pressure, hemoglobin, body temperature, coma index and metabolic index.
- a method for ultrasonic measurement of diaphragm comprising:
- the subject tissue includes the diaphragm.
- the motion information includes at least one of the following: motion amplitude, motion speed, thickness, thickening rate and strain rate.
- the subject is in a state of waiting for use of the breathing apparatus, and on the basis of the foregoing embodiment, the method further includes:
- prompt information is output to prompt the operator whether to remove the subject's breathing apparatus
- an ultrasonic measurement system of the diaphragm comprising:
- a transmitting circuit used to excite the ultrasonic probe to transmit the first ultrasonic wave to the subject's tissue
- a receiving circuit configured to receive the echo of the first ultrasonic wave returned by the subject's tissue, and obtain the echo signal of the first ultrasonic wave
- the processor is configured to execute the measurement method described in any one of the foregoing embodiments.
- an ultrasonic measurement system of the diaphragm comprising:
- a transmitting circuit used to excite the ultrasonic probe to transmit ultrasonic waves to the subject's tissue
- a receiving circuit configured to receive the echo of the ultrasonic wave returned by the subject's tissue, and obtain the echo signal of the ultrasonic wave
- the processor is configured to execute the measurement method described in any one of the above implementations.
- FIG. 1 is a schematic structural diagram of an ultrasonic measurement system in one embodiment
- Fig. 3 is the schematic diagram of the ultrasonic measurement method in one embodiment
- FIG. 4 is a schematic diagram of an ultrasonic measurement method in one embodiment
- FIG. 5 is a schematic diagram of an ultrasonic measurement method in one embodiment
- FIG. 6 is a schematic diagram of an ultrasonic measurement method in one embodiment
- FIG. 7 is a schematic diagram of an ultrasonic measurement method in one embodiment
- FIG. 8 is a schematic diagram of an ultrasonic measurement method in one embodiment
- Figure 10 is a flowchart of an ultrasonic measurement method in one embodiment
- FIG. 11 is a schematic diagram of an ultrasonic measurement method in one embodiment
- FIG. 12 is a schematic diagram of an ultrasonic measurement method in one embodiment
- Figure 13 is a schematic diagram of an ultrasonic measurement method in one embodiment
- Figure 14 is a flow diagram of an ultrasonic measurement method in one embodiment.
- connection and “connection” mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections).
- an ultrasonic measurement system including an ultrasonic probe 110 , a transmitting circuit and a receiving circuit 120 , a processor 130 and a display 140 .
- the ultrasonic probe 110 includes a transducer (not shown in the figure) composed of a plurality of array elements arranged in an array.
- the array elements can also form a convex array.
- the array element is used to transmit the ultrasonic beam according to the excitation electrical signal, or convert the received ultrasonic beam into an electrical signal. Therefore, each array element can be used to realize the mutual conversion of electrical pulse signals and ultrasonic beams, so as to realize the transmission of ultrasonic beams to the subject's tissues (such as organs, tissues, blood vessels, fetuses, etc. in the human body or animals), and can also be used to receive The echo of the ultrasound beam reflected back from the subject's tissue.
- tissues such as organs, tissues, blood vessels, fetuses, etc. in the human body or animals
- which array elements are used to transmit ultrasonic beams and which array elements are used to receive ultrasonic beams can be excited through the transmitting sequence and receiving sequence, or the array elements can be excited to divide time slots for transmitting ultrasonic beams or receiving ultrasonic beams.
- the array elements participating in the emission of ultrasonic beams can be excited by electrical signals at the same time, so as to emit ultrasonic waves at the same time; or the array elements participating in the emission of ultrasonic beams can also be excited by several electrical signals with a certain time interval, so as to continuously emit a certain time interval. Ultrasound.
- the transmitting circuit/receiving circuit 120 is used to generate a transmitting sequence/receiving sequence, the transmitting sequence is used to excite some or all of the multiple array elements to transmit ultrasonic waves to the subject's tissue, and the transmitting sequence parameters include the position of the array element used for transmitting, the array element Quantity and ultrasound beam launch parameters (eg amplitude, frequency, number of shots, shot separation, launch angle, wave pattern, focus position, etc.).
- the receiving sequence is used to excite some or all of the multiple array elements to receive the echoes of the ultrasonic beam after being reflected by the tissue of the test subject. angle, depth, etc.).
- the ultrasound beam parameters in the transmit sequence and the echo parameters in the receive sequence differ when the ultrasound beam echoes are used for different purposes or the types of images and/or detections generated from the ultrasound beam echoes are different.
- the transmit/receive circuit 120 is used to output the transmit/receive sequence of the ultrasound imaging mode to the ultrasound probe 110, and to excite the ultrasound probe 110 to transmit the ultrasound beam to the subject's tissue and receive the ultrasound beam returned by the subject's tissue. echo.
- the receiving array element of the ultrasonic probe 110 for receiving echoes receives the echo signals reflected from the region of interest, and outputs the echo signals converted into electrical signals to the processor.
- the transmit/receive circuit 120 is used to continuously output the transmit/receive sequence to the ultrasound probe 110 multiple times within a period of time, so that the ultrasound probe transmits ultrasound beams to the subject's tissue multiple times in succession, and each transmit , a frame of ultrasound image is formed after subsequent processing, and the continuous ultrasound image frame data forms ultrasound video data.
- the processor 130 is configured to transmit echo signals of ultrasonic waves according to the ultrasonic imaging mode to obtain an image of the subject's tissue, where the subject's tissue includes the diaphragm.
- the processor 130 identifies the diaphragm region of the subject from the image of the subject's tissue according to the image features of the diaphragm.
- the processor 130 automatically acquires the target M-line of the subject's diaphragm region.
- the processor 130 acquires an M image of the target M-line based on the acquired target M-line.
- the processor 130 determines measurement parameters of the subject's diaphragm region based on the M-image, wherein the measurement parameters of the diaphragm region include the movement amplitude of the diaphragm region, the movement speed of the diaphragm region, the thickness of the diaphragm region, the thickening rate of the diaphragm region, and the thickness of the diaphragm region. at least one of the strain rates.
- the processor 130 is further configured to excite the ultrasonic probe to transmit ultrasonic waves to the subject according to the Doppler mode, and acquire a Doppler image of the target area in the diaphragm region of the subject, so as to obtain the movement speed of the target area.
- the display 140 is used to display and output various detection results.
- the results include various graphics or measurement parameters of the intermediate process, which can be visually presented to the operator or the measured person in the form of graphics, images, characters, numbers or charts.
- the process of the ultrasonic measurement method is as follows:
- Step 11 excite the ultrasonic probe to transmit the first ultrasonic wave to the subject's tissue, and receive the echo of the first ultrasonic wave returned by the subject's tissue to obtain the echo signal of the first ultrasonic wave.
- the subject tissue includes the diaphragm.
- the ultrasonic probe can be a linear array probe; or can also be a convex array probe or a phased array probe.
- Step 12 obtaining an image of the subject's tissue according to the echo signal of the first ultrasonic wave.
- Step 13 Identify the diaphragm region of the subject from the image of the subject's tissue according to the image feature of the diaphragm.
- the ultrasonic probe may be a convex array probe.
- the convex array probe has a low resolution and a deep imaging area.
- the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue is roughly an arc, Refer to Figure 3.
- a convex array probe is preferred, with low resolution and a deep imaging area, and the identified diaphragm region can be approximately regarded as an arc.
- the ultrasonic probe may be a linear array probe
- the linear array probe has high resolution and a shallow imaging area
- the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue can present the diaphragm region.
- a rough outline, including the upper and lower edges of the diaphragmatic region, is shown with reference to Figure 4.
- the linear array probe is preferred, which has high resolution and shallow imaging area, and can identify the upper and lower edges of the diaphragm area, so as to obtain the measurement of the thickness of the diaphragm area and related parameters. value.
- the processor automatically identifies the diaphragm region of the subject from the image of the subject's tissue based on a pattern recognition method or a learning method.
- the processor may determine the subject's diaphragm region based on a pattern recognition method.
- the pattern recognition method identifies the diaphragm region from the image of the subject's tissue according to the image features of the diaphragm, such as grayscale or texture features, and then performs contrast enhancement processing on the diaphragm region, and then performs threshold segmentation and morphology on the diaphragm region. Learn to operate to obtain the diaphragmatic area.
- the processor may also identify the region of the diaphragm from the image of the subject's tissue based on machine learning methods.
- machine learning methods include feature-based machine learning methods and deep learning methods.
- the machine learning method is a feature-based machine learning method
- features can be extracted by traditional methods such as PCA, LDA, HOG, Harr, LBP, etc., or by neural network;
- the classifier can be traditional classifiers such as KNN, SVM, random forest, adaboost, etc., or a neural network. Model.
- the machine learning method is a deep learning method
- a neural network model such as CNN models such as AlexNet, VGG, Inception, ResNet, DenseNet, or a multi-layer perceptron composed of fully connected layers
- the image frames train this neural network to predict its diaphragm region separately from input from different image frames.
- the processor detects an operator's operation to identify the subject's diaphragm region in the image of the subject's tissue, and acquires the subject's diaphragm region in the image of the subject's tissue.
- Step 14 automatically acquiring the target M-line of the subject's diaphragm region in the image of the subject's tissue.
- the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue is roughly an arc, as shown in FIG. 3 .
- the processor automatically acquires several M-lines of the subject's diaphragm region in the subject's tissue image.
- the direction of the M line is the direction of the sound beam emission.
- the M-line of the diaphragm region passes through the center of the convex array probe and intersects the substantially arcuate diaphragm region.
- the meaning of "point" is not a point in the mathematical sense.
- a point may represent a pixel point, or a set of several pixel points.
- the processor automatically obtains the included angles of several M lines and the subject's diaphragm area.
- the M line intersects the diaphragm area of the arc at the intersection, and the tangent to the diaphragm area of the arc is made through the intersection, and the angle formed by the tangent passing through the intersection and the M line is the distance between M first and the subject's diaphragm area. angle.
- the M line whose included angle satisfies the first preset condition is determined as the target M line.
- the first preset condition is that the included angle meets clinical requirements. In general clinical requirements, the included angle is between 60 degrees and 90 degrees, including 60 degrees and 90 degrees. For example, the first preset condition is that the included angle is 90 degrees, as shown in FIG. 3 .
- the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue can present a rough outline of the diaphragm region, including the upper edge and lower edge of the diaphragm region. edge, as shown in Figure 4.
- the M line of the image of the subject's tissue intersects the subject's diaphragm area, and the M line is compared with the upper edge of the subject's diaphragm area at point a, and the tangent to the upper edge is made through point a, and the M line is connected to the upper edge.
- the angle formed by the tangent is the first angle.
- the M line and the lower edge of the subject's diaphragm area are compared with point b, and the tangent to the lower edge is made through point b, and the angle formed by the M line and the tangent to the lower edge is the second included angle.
- the first included angle and the second included angle are both the included angle between the M line and the subject's diaphragm area.
- the processor calculates the difference sum of the first included angle, the second included angle and 90 degrees, respectively, and the difference sum and at least one M line satisfying the first preset condition is determined as at least one target M line.
- the first preset condition is that the included angle meets clinical requirements.
- the first preset condition is that the sum of the difference between the first included angle, the second included angle and 90 degrees is close to 0 degrees. At this time, it can be considered that the M line is perpendicular to the upper and lower edges of the diaphragm area, and the measured thickness of the diaphragm area will be more accurate.
- the determination of the target M-line can also be determined by the anatomical M-line, wherein the anatomical M-line can be in any direction.
- the processor automatically acquires several anatomical M-lines of the subject's diaphragm region in the subject's tissue map.
- the tangent of the diaphragm region of the arc is made by the selected points, and the normal of the tangent is made by the selected points, then the The normal line is the anatomical M line of the diaphragmatic region. Selecting several points will get several corresponding anatomical M-lines.
- the processor determines the position of the target M-line according to several anatomical M-lines.
- the processor automatically obtains the subject's diaphragm region from the image of the subject's tissue that the processor automatically identifies from the image of the subject's tissue, and can present an approximate outline of the diaphragm region, including the upper portion of the diaphragm region. edge and lower edge, as shown in Figure 4.
- the anatomical M-line of the image of the subject's tissue intersects the subject's diaphragm region.
- the anatomical M-line and the upper edge of the subject's diaphragm region are compared to point e, and the upper edge is made through point e.
- the angle formed by the anatomical M line and the tangent of the upper edge is the third angle.
- the anatomical M line and the lower edge of the subject's diaphragm region are compared with point g, and the tangent to the lower edge is made through point g, and the angle formed by the anatomical M line and the tangent to the lower edge is the fourth angle.
- the third and fourth angles are the angles between the anatomical M-line and the subject's diaphragm area.
- the processor calculates the sum of the differences between the third included angle, the fourth included angle and 90 degrees, respectively, and the difference and the anatomical M-line satisfying the first preset condition are determined as the target M-line.
- Step 15 Based on the target M-line, obtain an M image along the target M-line within a first predetermined time period.
- the processor determines the target M-line through the M-line of the diaphragm region of the subject, the processor controls the transmitting circuit to excite the ultrasonic probe to transmit the second ultrasonic wave to the target M-line again, and the receiving circuit
- the ultrasonic probe is controlled to receive the echo signal of the second ultrasonic wave returned by the M-line of the target, and the processor obtains the M image of the M-line of the target according to the echo signal of the second ultrasonic wave.
- the processor may directly acquire the M image of the determined target M-line based on the first ultrasonic echo signal for acquiring the subject's tissue image, without having to re-obtain the target by transmitting a second ultrasonic wave to the target M-line. M image of M line.
- the M image of the target M-line can display the time-varying trend of the motion amplitudes of all points on the target M-line within the first predetermined time period, as shown in FIGS. 6 and 7 .
- the meaning of "point” in "all points” is not a point in the mathematical sense.
- a point may represent a pixel point, or a set of several pixel points.
- the first predetermined time period is at least one movement cycle of the diaphragm, where the movement cycle of the diaphragm corresponds to the breathing cycle.
- Step 16 based on the M image of the target M-line, obtain measurement parameters of the subject's diaphragm region; wherein the subject's tissue includes the diaphragm.
- the processor can automatically obtain the measurement parameters of the subject's diaphragm region based on the M image of the target M-line; or the operator can manually obtain the measurement parameters of the subject's diaphragm region based on the M image of the target M-line.
- the M image of the diaphragm is obtained from the M image of the target M line, and the measurement parameters of the subject's diaphragm region are obtained according to the M image of the diaphragm.
- the diaphragm muscle area of the M map can be understood as the area corresponding to the intersection area of the diaphragm muscle area of the target M line and the arc on the M map, and the meaning of "point" is not a point in the mathematical sense.
- a point can represent A pixel, or a collection of several pixels. If there are multiple target M-lines, multiple M-map diaphragm regions are obtained, where each M-map diaphragm region corresponds to a target M-line.
- the measurement parameters of the diaphragm muscle area include at least one of the movement amplitude of the diaphragm muscle area, the movement speed of the diaphragm muscle area, the thickness of the diaphragm muscle area, the thickening rate of the diaphragm muscle area, and the strain rate of the diaphragm muscle area.
- the measurement parameter of the diaphragm muscle area is the movement amplitude of the diaphragm muscle area, and according to the identified M image diaphragm muscle area, the extremely high position and the extremely low position of the M image diaphragm muscle area in the M image are determined; position and very low position, determine the range of motion of the subject's diaphragm region.
- the resolution of the convex array probe is low, and the imaging area is deep.
- the diaphragm area on the image obtained by the convex array probe of the subject's tissue roughly presents an arc, as shown in Figure 3.
- the target M line may be one, or two or more than two, and the corresponding M map diaphragm area may be one, or two or more.
- This embodiment uses an M-map diaphragm region as an example to illustrate how to determine the motion range of the diaphragm region.
- the first predetermined time period is an exercise cycle
- the diaphragm muscle region in the M map corresponds to a set of extremely high positions and extremely low positions in one exercise cycle
- the extremely high positions and the extremely low positions are the target M in the M map.
- the distance in the parallel direction of the corresponding area of the line is the movement range of the subject's diaphragm muscle area.
- the distance between the extremely high position and the extremely low position in the direction of the vertical time axis in the M diagram is the movement amplitude of the diaphragm muscle area of the subject.
- the first predetermined time period is two or more exercise cycles, then the diaphragm muscle region in the M map corresponds to two or more groups of extremely high positions and extremely low positions.
- the calculation method of the range of motion can determine the range of motion of the diaphragm muscle region within each cycle. Based on the acquired motion range of the diaphragm muscle region in each cycle, clinically, it can be selected or transformed based on the operator's needs, so as to obtain the motion range of the diaphragm muscle region required by the operator. For example, based on the acquired range of motion of the diaphragm region for each cycle, the average range of motion of the diaphragm region for multiple cycles is calculated. Alternatively, the range of motion of any one cycle can be selected as the range of motion of the diaphragm region.
- the above-mentioned embodiment is a method for determining the motion range of a subject's diaphragm region when there is only one M-map diaphragm region.
- the method when a plurality of M map diaphragm muscle regions of a subject's diaphragm muscle region are obtained from a plurality of target M lines, according to the above-mentioned method for determining the motion amplitude of the subject's diaphragm muscle region through one M diaphragm muscle region, the method is determined respectively. Motion amplitude of each M map diaphragmatic region during each motor cycle. Based on this, clinically, it can be selected or transformed according to the needs of the operator, so as to obtain the movement range of the diaphragm muscle region required by the operator.
- the average value of the motion amplitudes of each M-picture diaphragm region within the first predetermined time period further determine the average motion amplitudes of the multiple M-picture diaphragm regions based on the average motion amplitude of each M-picture diaphragm region .
- the average value of the movement amplitudes of multiple M-picture diaphragm muscle regions in the same movement cycle can be calculated as the movement amplitude of the subject's diaphragm muscle region.
- several target M-lines are generally selected, so that the range of motion of the diaphragm region is determined based on multiple M-map diaphragm regions. Compared with the calculation of a target M-line, the movement range of the diaphragm muscle area will be more accurate and the error will be smaller.
- a region corresponding to the diaphragm muscle region of the M map is determined in the image of the subject's tissue according to the position of the target M line to obtain a region corresponding to the diaphragm muscle region of the M map; the first type is displayed on the region corresponding to the diaphragm muscle region of the M map. Identify, and dynamically update the position of the first type of marker to describe the movement trajectory of the corresponding region of the diaphragm muscle region of the M map.
- the first type of identification may be in the form of dots, or squares, or circles or other forms.
- the first type logo is displayed on the corresponding area of the diaphragm muscle area of the M image. The operator can intuitively obtain the position information of the diaphragm muscle area of the M image on the image of the subject's tissue, and can also intuitively understand the corresponding area of the diaphragm muscle area of the M image. Movement information over time.
- the first type of identification can also represent more abundant information about the region corresponding to the diaphragm muscle region of the M map.
- the direction of the first type of identification represents the movement direction of the region corresponding to the diaphragm region of the M map; or the length of the symbol of the first type of identification represents the movement amplitude of the region corresponding to the diaphragm region of the M map. In this way, the information obtained by the operator will be more abundant and comprehensive, which is beneficial to clinical diagnosis.
- the corresponding regions of multiple M-map diaphragm muscle regions can also be displayed differently.
- the target M-line includes multiple target M-lines, and the M-map diaphragm region includes multiple M-map diaphragm regions, wherein each M-map diaphragm region corresponds to a target M-line; the M-map diaphragm region obtained according to the target M-line
- the corresponding area includes a plurality of M map diaphragm muscle area corresponding areas, wherein each M map diaphragm muscle area corresponding area corresponds to an M map diaphragm muscle area;
- the first type identification includes a plurality of first type identifications, wherein each first type identification and An M map corresponds to the area of the diaphragm; where multiple first-type markers are shown in different colors.
- the corresponding regions of the diaphragm muscle region of the M map include three corresponding regions of the diaphragm muscle region of the M map as an example.
- the second corresponding area and the third corresponding area are shown with reference to FIG. 8 .
- the first corresponding area, the second corresponding area and the third corresponding area are respectively displayed with three first type marks, and the first corresponding area, the second corresponding area and the third corresponding area are located in the respective corresponding first type marks with different first type marks. Colors are shown to indicate that the corresponding region of each M-map diaphragmatic region is located at a different location in the subject's diaphragmatic region.
- a trend graph of the movement amplitude of the diaphragm muscle region of the M map over time can also be displayed.
- a trend graph of the movement amplitude of the diaphragm muscle region in the M image over time is obtained, and the processing controls the display to display the trend graph.
- the M image diaphragm area includes one, two or more M image diaphragm areas, and each diaphragm area corresponds to a trend graph, so that the operator can clearly and intuitively obtain the intersection area of the target M line and the diaphragm area over a period of time. range of motion information.
- a trend graph of the movement amplitude of each M-picture diaphragm muscle region over time is obtained, and multiple trend graphs are obtained; the multiple trend graphs are displayed with different colors; wherein any one of the multiple M-picture diaphragm muscle regions is M.
- the color of the trend graph corresponding to the diaphragm muscle region of the graph is the same as or related to the color of the first type identifier corresponding to the diaphragm muscle region of any M graph.
- L1, L2 and L3 are the trend graphs of the motion amplitudes of the first corresponding area, the second corresponding area and the third corresponding area, respectively, wherein the first corresponding area is the same or associated with the color of L1, and the second The corresponding area and the color of L2 are the same or related, and the third corresponding area is the same or related to the color of L3.
- the measurement parameter of the diaphragm area may also be the thickness or thickening rate of the diaphragm area. According to the image features of the diaphragm, the subject's M image diaphragm area is identified in the M image of the target M line, and the thickness or thickening rate of the subject's diaphragm area is obtained according to the M image diaphragm area.
- the linear array probe has high resolution and shallow imaging area.
- the diaphragm area on the image obtained by the linear array probe of the subject's tissue can show a rough outline with thickness, as shown in Figure 4.
- the M map diaphragm region includes the identified upper edge region and the lower edge region, and the maximum and minimum values of the distance between the upper edge region and the lower edge region identified by the M map diaphragm region are determined, according to The maxima and minima determine the thickness or rate of thickening of the subject's diaphragm region.
- one M map diaphragm muscle region is taken as an example to illustrate how to determine the thickness or thickening rate of the diaphragm muscle region.
- the first predetermined time period is a movement cycle, and it is determined that the distance between the upper edge region and the lower edge region of the diaphragm muscle region of the M map corresponds to a set of maximum and minimum values in one movement cycle. 7 is shown. Clinically, it can be selected or changed based on the operator's needs to obtain the thickness or thickening rate of the diaphragm muscle region required by the operator. For example, the average value of the maximum value and the minimum value is the thickness of the diaphragm region of the subject. Alternatively, without calculating the average thickness, the obtained maxima and minima are directly used as the thickness of the diaphragm region. Thickening rate (thickness maximum value - thickness minimum value)/thickness minimum value, through the calculation formula of maximum value, minimum value and thickening rate, the thickening rate of the subject's diaphragm area can be determined .
- the distance between the upper edge and the lower edge of the diaphragm region of the M map is the distance between the upper edge and the lower edge of the diaphragm region of the M map in the parallel direction of the region corresponding to the target M line in the M map
- the distance between the upper and lower edges of the M-map diaphragm area can be understood as the thickness of the M-map diaphragm area.
- the diaphragm muscle region of the M image corresponds to two or more groups of maximum values and minimum values.
- the thickness or thickening rate of the diaphragm region within each cycle can be determined. Clinically, it can be selected or transformed based on the needs of the operator to obtain the range of motion of the diaphragm muscle region required by the operator.
- the thickness of the diaphragm is the thickness of the diaphragm, and the thickness of the diaphragm is the thickness of the diaphragm; the thickness of the diaphragm is calculated from the thickness of each exercise cycle.
- the average of the thickening rate of the diaphragm is the thickening rate of the diaphragm.
- the average thickness of any one exercise cycle among multiple exercise cycles may be used as the thickness of the subject's diaphragm muscle region.
- the maximum value and minimum value of any one of the multiple motion cycles can be directly used as the thickness of the subject's diaphragm region.
- the thickening rate of any one of the multiple motion cycles was taken as the thickening rate of the subject's diaphragm region.
- the above-mentioned embodiment is a method for determining the thickness or the thickening rate of the diaphragm region of the subject under the condition that there is only one M image diaphragm region.
- the thickness or thickening rate of the subject's diaphragm muscle region is determined according to the above through one M map diaphragm muscle region.
- the thickness or thickening rate of each M-diaphragm region within each motion cycle was determined separately. Clinically, it can be selected or transformed based on the needs of the operator to obtain the range of motion of the diaphragm muscle region required by the operator.
- the average value of the thickness or the average thickening rate of each M-map diaphragm region within the first predetermined time period and then based on the average value of the thickness or the average thickening rate of each M-map diaphragm region, Determine the average thickness or average thickening rate of multiple M-map diaphragmatic regions.
- the average value of the thicknesses or the average thickening rates of the diaphragm muscle regions of multiple M images in the same exercise cycle can be calculated as the thickness or thickening rate of the diaphragm muscle regions of the subject.
- the regions corresponding to the upper edge region and the lower edge region of the diaphragm muscle region of the M map are determined in the image of the subject's tissue according to the position of the target M line, so as to obtain the region corresponding to the edge region of the diaphragm muscle of the M map;
- the second type of mark is displayed on the corresponding area of the diaphragm area, and the position of the second type of mark is dynamically updated to describe the movement track of the area corresponding to the edge area of the diaphragm in the M image.
- the second type identification can be the same as the first type identification, or the second type identification can also be different from the first type identification, here the first type identification and the second type identification are only to distinguish the measurement of different parameters in the diaphragm region identification in .
- the second type of logo is displayed on the area corresponding to the edge of the diaphragm in the M image.
- the operator can intuitively obtain the position information of the upper edge area and the lower edge area of the diaphragm muscle area in the M image on the image of the subject's tissue, and can also intuitively understand the M image.
- Fig. Motion information of the corresponding region over time in the border region of the diaphragm.
- the target M-line includes multiple target M-lines
- the M-map diaphragm region includes multiple M-map diaphragm regions, wherein each M-map diaphragm region corresponds to a target M-line; the M-map diaphragm edge obtained according to the target M-line.
- the region-corresponding region includes a plurality of M-picture diaphragm border region corresponding regions, wherein each M-picture diaphragm border region corresponding region corresponds to one M-picture diaphragm border region, and each M-picture diaphragm border region corresponding region includes an upper border region corresponding region and The lower edge area corresponds to the area;
- the second type identification includes a plurality of second type identifications, wherein each second type identification corresponds to an M map diaphragm muscle area; wherein the multiple second type identifications are displayed in different colors.
- a trend diagram of the distance between the upper edge region and the lower edge region of the diaphragm muscle region of the M image over time is obtained, and the processing controls the display to display the trend diagram.
- the M map diaphragm muscle area includes one, two or more M map diaphragm muscle areas, each M map diaphragm muscle area correspondingly includes an upper edge area and a lower edge area, wherein each M map diaphragm muscle area has an upper edge area and a lower edge area.
- a trend graph is displayed corresponding to the change of the distance between them over time, so that the operator can clearly and intuitively obtain the change information of the thickness of the intersection area of the target M-line and the diaphragm muscle area over a period of time.
- each M map diaphragm muscle region can also be displayed separately.
- the color of the trend graph corresponding to the area is the same as or associated with the color of the corresponding first type identification.
- a trend diagram of the distance between the upper edge region and the lower edge region of each M map diaphragm region with time is obtained, and multiple trend diagrams are obtained; multiple trend diagrams are displayed with different colors;
- the trend graph corresponding to any one of the M-map diaphragm muscle regions and the color of the first type identifier corresponding to any one of the M-map diaphragm muscle regions are the same or associated with each other.
- the measurement parameters of the subject's diaphragm muscle region can be determined, and the measurement parameters include the motion amplitude, or the thickness or thickening rate of the subject's diaphragm muscle region can also be determined, or can also be determined based on
- the acquired motion amplitude and motion time information can obtain the motion speed of the diaphragm region, or based on the thickness information of the diaphragm region, the diaphragm strain rate, including the longitudinal strain rate and the radial strain rate, can be further measured.
- the operator can obtain general motion state information of the diaphragm muscle region.
- this embodiment can also display information about the change of each measurement parameter over time, such as the trend diagram of the movement amplitude of the diaphragm muscle region in the M image over time, and the information on the thickness of the edge region of the diaphragm muscle in the M image.
- the status letter can provide the operator with more comprehensive and accurate reference information, so as to make a more accurate assessment on whether to withdraw the breathing apparatus from the subject.
- the movement speed of the subject's diaphragm region can be obtained based on the movement amplitude and movement time of the diaphragm region, and the movement speed of the diaphragm region can also be obtained based on an ultrasound image obtained by the Doppler principle.
- This embodiment provides An ultrasonic measurement method of the movement speed of the diaphragm is proposed, and the process of the ultrasonic measurement method is as follows:
- Step 21 excite the ultrasonic probe to transmit the first ultrasonic wave to the subject's tissue, and receive the echo of the first ultrasonic wave returned by the subject's tissue, and obtain the echo signal of the first ultrasonic wave;
- Step 22 obtaining the first ultrasound image according to the echo signal of the first ultrasound
- Step 23 identifying the diaphragm region of the subject from the first ultrasound image according to the image features of the diaphragm;
- Step 24 selecting a target area in the diaphragm region of the subject in the first ultrasound image
- Step 25 excite the ultrasonic probe to transmit the second ultrasonic wave to the subject's tissue according to the Doppler mode, and receive the echo of the second ultrasonic wave returned by the subject's tissue, and obtain the echo signal of the second ultrasonic wave;
- Step 26 obtaining a Doppler image of the target area according to the echo signal of the second ultrasonic wave
- Step 27 determining the movement speed of the diaphragm region of the subject based on the Doppler image of the target region, wherein the tissue of the subject includes the diaphragm.
- the Doppler image includes all types of images obtained based on the Doppler principle, including C-mode images, D-mode images and spectral Doppler images.
- exciting the ultrasonic probe to transmit the second ultrasonic wave to the subject's tissue according to the Doppler mode including exciting the ultrasonic probe to transmit the second ultrasonic wave to the tissue region including the diaphragm muscle of the subject according to the Doppler mode, or may also
- the ultrasound probe is excited to transmit the second ultrasound to the diaphragm region of the subject determined in step 23 according to the Doppler mode, or the ultrasound probe can also be excited to transmit the second ultrasound to the target region determined in step 24 according to the Doppler mode.
- a Doppler image of the target area is obtained.
- the velocity of movement of the subject's diaphragm region is determined.
- the movement state of the subject's diaphragm area can characterize the subject's spontaneous breathing effort.
- the subject's spontaneous breathing effort is usually one of the key factors in evaluating whether the subject can withdraw the breathing equipment. Therefore, there is a quantitative relationship between the measurement parameter information obtained based on the movement state of the subject's diaphragm region and the assessment of whether the subject can withdraw the breathing apparatus.
- the subject is in the state of the breathing apparatus to be used, and based on the determined measurement parameters of the subject's diaphragm region, prompt information is output for prompting the operator whether to remove the subject's breathing apparatus.
- the measurement parameters include at least one of the movement amplitude of the diaphragm muscle region, the movement speed of the diaphragm muscle region, the thickness of the diaphragm muscle region, the thickening rate of the diaphragm muscle region, and the strain rate of the diaphragm muscle region.
- the measurement parameter is the motion amplitude
- the motion amplitude is compared with the first threshold value, and when the motion amplitude is less than or equal to the first threshold value, the information prompting the operator that the subject needs to continue to use the breathing apparatus is output, or, When the motion amplitude is greater than the first threshold, a message indicating that the operator can withdraw the breathing apparatus of the subject is output.
- the first threshold is generally obtained by summarizing clinical experience, and the first threshold may be different based on actual clinical conditions.
- the first threshold value can be automatically set by the processor, or manually set by the operator according to the actual situation.
- the measurement parameter is the thickening rate
- the thickening rate and the second threshold are compared, and when the thickening rate is less than or equal to the second threshold, a message is output that prompts the operator that the subject needs to continue to use the breathing apparatus. , or, when the thickening rate is greater than the second threshold, outputting information prompting the operator that the breathing apparatus of the subject can be removed.
- the second threshold is generally obtained based on clinical experience, and the second threshold may vary based on actual clinical conditions.
- the second threshold can be automatically set by the processor, or manually set by the operator according to the actual situation.
- the range of motion and the thickening rate can be used to evaluate whether the subject's breathing equipment can be removed separately.
- Other measurement parameters can also be used to evaluate whether the subject's breathing equipment can be removed.
- the specific threshold will be determined according to the measurement parameters. varies.
- the motion amplitude or thickening rate can also be comprehensively analyzed in combination with the subject's preset physiological signals, and the operator can evaluate whether the subject's breathing apparatus can be removed through the comprehensive analysis results.
- the measurement parameter is the motion amplitude
- the preset physiological signal of the subject is obtained
- the motion amplitude and the preset physiological signal of the subject are comprehensively analyzed
- prompt information is output to prompt the operator whether to remove the preset physiological signal. the subject's breathing apparatus.
- the ratio between the breathing frequency and the diaphragm displacement helps the doctor to judge whether the ventilator can be removed, for example, the ratio between the breathing frequency and the diaphragm displacement If it is not greater than a certain threshold, the ventilator can be withdrawn, for example, the threshold can be 1.3 times/(minute*mm).
- the measurement parameter is the thickening rate
- the preset physiological signal of the subject is obtained
- the thickening rate and the preset physiological signal of the subject are comprehensively analyzed
- prompt information is output to prompt the operator whether to withdraw or not. Remove the subject's breathing apparatus.
- the preset physiological signals include at least one of the following: breathing frequency, breathing volume, spontaneous breathing tidal volume, heart rate, oxygen saturation, arterial blood gas index, blood pressure, systolic blood pressure, hemoglobin, body temperature, Coma index and metabolic index.
- the motion range or the thickening rate can also be comprehensively analyzed in combination with the ultrasound image measurement index of the subject, and the operator can evaluate whether the subject's breathing apparatus can be removed through the comprehensive analysis results.
- the measurement parameter is the range of motion
- an ultrasound image of the subject's preset tissue is obtained, and a preset measurement index is obtained from the ultrasound image of the preset tissue; the range of motion and the subject's preset measurement index are compared.
- prompt information is output to prompt the operator whether to withdraw the breathing apparatus of the subject.
- a quantitative index is generated by comprehensively analyzing the movement range of the diaphragm and cardiac output parameters, and the quantitative index is compared with a preset threshold, and based on the comparison result, it can be used to evaluate the ability to remove the breathing device.
- the measurement parameter is the thickening rate
- an ultrasound image of the subject's preset tissue is obtained, and a preset measurement index is obtained from the ultrasound image of the preset tissue; the thickening rate and the subject's preset measurement are obtained.
- the indicators are comprehensively analyzed, and prompt information is output to prompt the operator whether to remove the breathing apparatus of the subject.
- the preset tissue includes cardiac tissue
- the preset measurement index includes at least one of the following: left ventricular ejection fraction, diastolic function index, cardiac output, left ventricular outflow tract velocity time integral VTI and inferior vena cava IVC parameters.
- the IVC parameters of the inferior vena cava include the end-expiratory diameter of the inferior vena cava, the end-inspiratory diameter of the inferior vena cava, the collapse rate of the inferior vena cava, the dilatation rate of the inferior vena cava, and the variation rate of the inferior vena cava.
- the preset tissue includes lung tissue
- the preset measurement index includes B-line number or lung ultrasound score.
- a method for ultrasonic measurement of the diaphragm is provided, the flowchart of which is shown with reference to FIG. 9 , and the specific steps are as follows:
- Step 31 excite the ultrasonic probe to transmit the first ultrasonic wave to the subject's tissue, and receive the echo of the first ultrasonic wave returned by the subject's tissue, and obtain the echo signal of the first ultrasonic wave;
- Step 32 obtaining an image of the subject's tissue according to the echo signal of the first ultrasonic wave
- Step 33 according to the image characteristics of the diaphragm, identify the diaphragm region of the subject from the image of the subject's tissue;
- Step 34 acquiring the target M-line of the subject's diaphragm region in the image of the subject's tissue
- Step 35 based on the target M-line, obtain an M image along the target M-line within a second predetermined time period
- Step 36 based on the M image of the target M-line, obtain measurement parameters of the diaphragm region of the subject; wherein, the subject's tissue includes the diaphragm.
- step 34 includes that the processor automatically acquires the target M-line of the diaphragm region of the subject in the image of the subject's tissue, or the operator manually acquires the subject's M-line in the image of the subject's tissue. Target M-line in the diaphragmatic region.
- the above embodiment provides an ultrasonic measurement method and system for the diaphragm.
- the processor obtains an image of the subject's tissue, and according to the image characteristics of the diaphragm, the processor identifies the subject's diaphragm region in the image of the subject's tissue, and processes the image of the subject's tissue.
- the device acquires the target M line of the subject's diaphragm region, acquires the M image of the target M line based on the target M line, and determines the measurement parameters of the subject's diaphragm region based on the acquired M image.
- the automatic measurement of the subject's diaphragm region by ultrasound can simplify the doctor's operation, make the measurement more accurate, and provide more accurate reference information for the doctor to predict and evaluate the weaning time.
- an ultrasonic measurement system including an ultrasonic probe 110 , a transmitting circuit and a receiving circuit 120 , a processor 130 and a display 140 .
- the processor 130 is configured to transmit ultrasonic echo signals according to the ultrasonic imaging mode to obtain an image of the subject's tissue.
- the image of the subject's tissue includes multiple frames, and the subject's tissue includes the diaphragm.
- the processor 130 identifies the diaphragm muscle region of the subject from the first image in the multiple frames of images according to the image characteristics of the diaphragm muscle.
- the processor 130 selects a tracking region in the subject's diaphragm region in the first image.
- the processor 130 searches the remaining images in the multi-frame images for a matching area corresponding to the tracking area of the first image.
- the processor 130 acquires the movement track of the tracking area within the third predetermined time period according to the tracking area and the matching area.
- the processor 130 determines the measurement parameters of the diaphragm region of the subject based on the movement trajectory of the tracking region.
- the ultrasonic probe 110 , the transmitting circuit, the receiving circuit 120 , and the display 140 in the ultrasonic measurement system are referred to the foregoing descriptions, and are not repeated here.
- the process of the ultrasonic measurement method is as follows:
- Step 41 excite the ultrasonic probe to transmit ultrasonic waves to the subject's tissue, and receive the echoes of the ultrasonic waves returned by the subject's tissue to obtain the echo signals of the ultrasonic waves.
- the subject tissue includes the diaphragm.
- the ultrasonic probe can be a linear array probe; or can also be a convex array probe or a phased array probe.
- Step 42 Obtain an image of the subject's tissue according to the echo signal of the ultrasound, where the image of the subject's tissue includes multiple frames of images.
- Control the ultrasonic probe to always emit ultrasonic waves at the same part of the subject and the acquired multi-frame ultrasonic images can basically be considered as images obtained for the same tissue area, and the unavoidable small errors can be ignored, such as the operator in the process of controlling the probe There will be slight jitter or movement in it, which is negligible.
- Step 43 Identify the diaphragm region of the subject from the first image in the multiple frames of images according to the image features of the diaphragm.
- the ultrasonic probe may be a convex array probe.
- the convex array probe has low resolution and a deep imaging area.
- the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue is roughly an arc.
- the ultrasonic probe may be a linear array probe, the linear array probe has high resolution and a shallow imaging area, and the diaphragm region of the subject automatically identified by the processor from the image of the subject's tissue can present the diaphragm region. Rough outline, including the upper and lower edges of the diaphragmatic region.
- the processor automatically identifies the diaphragm region of the subject from the first image of the multiple frames of images based on a pattern recognition method or a learning method.
- the processor may determine the subject's diaphragm region based on a pattern recognition method.
- the pattern recognition method identifies the diaphragm region from the image of the subject's tissue according to the image features of the diaphragm, such as grayscale or texture features, and then performs contrast enhancement processing on the diaphragm region, and then performs threshold segmentation and morphology on the diaphragm region. Learn to operate to obtain the diaphragmatic region.
- the processor may also identify the diaphragm muscle region from the first image based on a machine learning method.
- machine learning methods include feature-based machine learning methods and deep learning methods. Reference is made to the foregoing description, which is not repeated here.
- the processor detects the operator's operation of identifying the subject's diaphragm region in the first image, and acquires the subject's diaphragm region in the first image.
- Step 44 Select a tracking area in the diaphragm area of the subject in the first image.
- the processor may automatically select the tracking area in the diaphragm area of the subject in the first image, or the operator may manually select the tracking area in the diaphragm area of the subject in the first image.
- the tracking area is randomly selected from the diaphragm muscle area of the subject in the first image, or at least three tracking areas with equal distances between the diaphragms are selected from the diaphragm muscle area of the subject in the first image.
- Step 45 Search the remaining images in the multi-frame images for a matching area corresponding to the tracking area of the first image.
- the acquired multi-frame ultrasound images can basically be considered as images acquired for the same tissue region, which is also a prerequisite for the speckle tracking method.
- the search may be performed based on the tracking area in the first image, or the search may be performed based on a matching area already searched in other frame images other than the first image.
- the remaining images in the multi-frame images are searched for the matching area corresponding to the tracking point of the first frame image, as shown in FIG. It is the statistical value of gray mean, variance and so on in the field.
- Step 46 Acquire a movement track of the tracking area within a third predetermined time period according to the tracking area and the matching area.
- the third predetermined time period is at least one diaphragm movement cycle.
- Step 47 Determine the measurement parameters of the subject's diaphragm region based on the motion trajectory; wherein the subject's tissue includes the diaphragm.
- the processor can automatically obtain the measurement parameters of the subject's diaphragm region based on the movement trajectory; or the operator can manually obtain the measurement parameters of the subject's diaphragm region based on the movement trajectory.
- the measurement parameters of the diaphragm muscle area include at least one of the movement amplitude of the diaphragm muscle area, the movement speed of the diaphragm muscle area, the thickness of the diaphragm muscle area, the thickening rate of the diaphragm muscle area, and the strain rate of the diaphragm muscle area.
- the measured parameter of the diaphragm region is the range of motion of the diaphragm region. According to the acquired motion trajectory of the tracking area, obtain the extremely high position and the extremely low position of the motion trajectory within the third predetermined time period; according to the determined extremely high position and extremely low position, determine the movement range of the subject's diaphragm region .
- the resolution of the convex array probe is low, and the imaging area is deep.
- the diaphragm area on the image obtained by the convex array probe of the subject's tissue roughly presents an arc, as shown in Figure 3.
- One of the tracking regions corresponds to one motion track
- the tracking regions may be one, or two or more
- the corresponding motion tracks may be one, or two or more.
- This embodiment uses a motion trajectory as an example to illustrate how to determine the motion range measurement of the diaphragm region.
- the first predetermined time period is a motion cycle
- one motion cycle of the motion track corresponds to a set of extremely high positions and extremely low positions, then the extremely high positions and the extremely low positions are in the vertical time axis direction in the motion track.
- the distance is the range of motion of the subject's diaphragmatic region.
- the first predetermined time period is two or more motion cycles, and the motion trajectory corresponds to two or more groups of extremely high positions and extremely low positions, then according to the calculation method of the motion amplitude of the above-mentioned one motion trajectory, it can be determined The motion amplitude of the motion trajectory within each cycle. Based on the acquired motion range of each periodic motion trajectory, clinically, it can be selected or transformed based on the operator's needs to obtain the motion range of the diaphragm region required by the operator, as described above, and will not be repeated here.
- the above embodiment is a method for determining the movement amplitude of the diaphragm region of the subject under the condition that there is only one movement trajectory.
- each motion trajectory is The magnitude of motion within each motion cycle. Based on this, clinically, it is possible to select or transform according to the needs of the operator, so as to obtain the motion range of the diaphragm muscle region required by the operator. In the process of clinical diagnosis, several tracking regions are generally selected, so that the motion range of the diaphragm region is determined based on multiple motion trajectories. Compared with the calculation of the movement amplitude of the diaphragm region through a tracking region, it will be more accurate and the error will be smaller.
- the first type of identification is displayed on the tracking area, and the position of the first type of identification is dynamically updated to describe the movement track of the tracking area.
- the first type of identification may be dot-shaped, or square, or circular or other forms.
- the first type of identification is displayed on the tracking area, and the operator can intuitively obtain the position information of the tracking area corresponding to the motion track on the image of the subject's tissue, and can also intuitively understand the change information of the movement amplitude of the tracking area over time. .
- the first type of identification can also represent richer information about the tracking area.
- the direction of the first type of identification indicates the movement direction of the tracking area; or the length of the identification of the first type of identification indicates the movement range of the tracking area. In this way, the information obtained by the operator will be more abundant and comprehensive, which is beneficial to clinical diagnosis.
- the tracking area includes a plurality of tracking areas
- the first-type identification includes a plurality of first-type identifications, wherein each first-type identification corresponds to a tracking area; wherein the multiple first-type identifications are in different colors. show.
- the tracking area includes three tracking areas.
- the three tracking areas are named as a first tracking area, a second tracking area, and a third tracking area, respectively.
- the first tracking area, the second tracking area and the third tracking area are respectively displayed with three first type signs, and the first tracking area, the second tracking area and the third tracking area are located in the corresponding first tracking area.
- a type marker is displayed in a different color to indicate that each tracking area is located at a different location in the subject's diaphragmatic region.
- a trend graph of the movement amplitude of the tracking area changing with time can also be displayed.
- a trend graph of the movement amplitude of the tracking area changing with time is obtained, and the processing controls the display to display the trend graph.
- the tracking area includes one, two or more tracking areas, and a trend graph is displayed corresponding to each tracking area, so that the operator can clearly and intuitively obtain the movement amplitude information of the tracking area within a period of time.
- the color of the trend graph corresponding to each tracking area can also be displayed with the The colors of the first type identifiers corresponding to the tracking areas are the same or related.
- a trend graph of the variation of the motion amplitude of each tracking area with time is obtained, and multiple trend graphs are obtained; the multiple trend graphs are displayed with different colors; The color of the trend graph and the first type identification corresponding to any one of the tracking areas are the same or associated with each other.
- M1 , M2 and M3 are the trend graphs of the motion amplitudes of the first tracking area, the second tracking area and the third tracking area, respectively.
- the first tracking area is the same or associated with the color of M1
- the second tracking area is the same or associated with the color of M2
- the third tracking area is the same or associated with the color of M3.
- the measurement parameter of the diaphragm area may also be the thickness or thickening rate of the diaphragm area. Based on the movement trajectory of the tracking region within the third predetermined time period, the thickness or thickening rate of the diaphragm region of the subject is determined.
- the linear array probe has high resolution and shallow imaging area.
- the diaphragm area on the image obtained by the linear array probe of the subject's tissue can show a rough outline with thickness, as shown in Figure 4.
- the motion track of the tracking area includes the acquired upper edge region and the lower edge region, and the maximum value and the minimum value of the distance between the upper edge region and the lower edge region obtained by the motion track are determined, according to the maximum value. and the minimum value to determine the thickness or thickening rate of the subject's diaphragm region.
- the tracking area may be one, or two or more, and one tracking area corresponds to one motion trajectory.
- one tracking area is used as an example to illustrate how to determine the thickness or thickening rate of the diaphragm area.
- the first predetermined time period is a motion period
- the distance between the upper edge region and the lower edge region of the motion track of the tracking area is determined to correspond to a set of maximum and minimum values within one motion period.
- it can be selected or changed based on the operator's needs to obtain the thickness or thickening rate of the diaphragm muscle region required by the operator.
- the average value of the maximum value and the minimum value is the thickness of the diaphragm region of the subject.
- the obtained maxima and minima are directly used as the thickness of the diaphragm region.
- Thickening rate (thickness maximum value - thickness minimum value)/thickness minimum value through the calculation formula of maximum value, minimum value and thickening rate, the thickening rate of the subject's diaphragm area can be determined .
- the distance between the upper edge area and the lower edge area of the motion trajectory of the tracking area is the vertical time axis direction of the motion trajectory of the tracking area.
- the distance between the upper edge region and the lower edge region of the motion track of the tracking region can be understood as the thickness of the tracking region.
- the tracking area corresponds to two or more groups of maximum values and minimum values.
- the thickness or thickening rate of the diaphragm region within each cycle can be determined. Clinically, it can be selected or changed based on the operator's needs to obtain the thickness or thickening rate of the diaphragm muscle region required by the operator. Reference is made to the foregoing description, which is not repeated here.
- the above-mentioned embodiment is a method for determining the thickness or the thickening rate of the diaphragm region of the subject under the condition of selecting a tracking region.
- each tracking region is determined separately.
- the thickness or rate of thickening of each tracked region during each motion cycle can be selected or transformed based on the operator's needs to obtain the movement range of the diaphragm muscle region required by the operator.
- several tracking regions are generally selected, so that the thickness or thickening rate of the diaphragm region is determined based on the motion trajectories of the multiple tracking regions. Compared with the calculation of the thickness or thickening rate of the diaphragm region through the motion trajectory of a tracking region, it will be more accurate and the error will be smaller.
- the region corresponding to the upper edge region and the lower edge region of the motion track is determined in the image of the subject's tissue according to the position of the tracking region, so as to obtain the region corresponding to the edge region of the motion track; on the region corresponding to the edge region of the motion track
- the second type of mark is displayed, and the position of the second type of mark is dynamically updated to describe the movement track of the region corresponding to the edge region of the movement track.
- the second type identification can be the same as the first type identification, or the second type identification can also be different from the first type identification, here the first type identification and the second type identification are only to distinguish the measurement of different parameters in the diaphragm region identification in .
- the second type of logo is displayed on the area corresponding to the edge of the motion track.
- the operator can intuitively obtain the position information of the upper edge area and the lower edge area of the motion track on the image of the subject's tissue, and can also intuitively understand the edge area of the motion track.
- the motion information of the corresponding region over time.
- the corresponding regions of the edge regions of multiple motion tracks can also be displayed differently.
- the tracking area includes multiple tracking areas, and the motion track includes multiple motion tracks, wherein each motion track corresponds to a tracking area; the area corresponding to the edge area of the motion track obtained according to the tracking area includes multiple motion track edge area corresponding areas. , wherein each motion track edge area corresponding area corresponds to a motion track, and each motion track edge area corresponding area includes an upper edge area corresponding area and a lower edge area corresponding area; the second type identification includes a plurality of second type identifications , wherein each second type identification corresponds to a motion track area; wherein a plurality of second type identifications are displayed in different colors.
- the area corresponding to the edge area of the motion track includes three areas corresponding to the edge area of the motion track.
- the three corresponding areas of the edge area of the motion track are respectively named as the first edge corresponding area.
- the second edge corresponding area and the third edge corresponding area are respectively displayed with the second type logo, the first edge corresponding area, the second edge corresponding area and the third edge corresponding area
- the second type of identification is displayed in different colors to distinguish the tracking area at different locations in the subject's diaphragm area.
- a trend graph of the distance between the upper edge region and the lower edge region of the motion track as a function of time can also be displayed.
- a trend graph of the distance between the upper edge region and the lower edge region of the motion track as a function of time is obtained, and the processing controls the display to display the trend graph.
- the motion trajectory of the tracking area includes one, two or more motion trajectories, each motion trajectory correspondingly includes an upper edge area and a lower edge area, wherein the distance between the upper edge area and the lower edge area of each motion trajectory varies with
- a trend graph is displayed corresponding to the change of time, that is, the trend graph of the thickness of each tracking area with time is displayed, so that the operator can clearly and intuitively obtain the change information of the thickness of the tracking area over a period of time.
- the trend graph of the distance between the upper edge region and the lower edge region of the motion trajectories of multiple tracking regions can also be displayed differently with time; further, each tracking region can also be The color of the trend graph corresponding to the thickness change of , is the same as or associated with the color of the second type identification corresponding to each tracking area.
- a trend graph of the distance between the upper edge area and the lower edge area of the motion track of each tracking area as a function of time is obtained, and multiple trend graphs are obtained; the multiple trend graphs are displayed with different colors;
- the trend graph corresponding to any one of the tracking areas and the color of the second type identifier corresponding to the any one of the tracking areas are the same or associated with each other.
- N1, N2 and N3 are the thickness change trend graphs of the first edge corresponding area, the second edge corresponding area and the third edge corresponding area respectively, wherein the colors displayed in the trend graphs of N1, N2 and N3 are the same as The colors of the second-type identifications of the corresponding regions of the respective corresponding edges are displayed in the same color.
- the measurement parameters of the subject's diaphragm area can be determined, and the measurement parameters include the motion amplitude, or the thickness or thickening rate of the subject's diaphragm area can also be determined, or can also be determined based on
- the acquired motion amplitude and motion time information can obtain the motion speed of the diaphragm region, or based on the thickness information of the diaphragm region, the diaphragm strain rate, including the longitudinal strain rate and the radial strain rate, can be further measured.
- the operator can obtain the approximate motion state information of the diaphragm muscle area by determining the measurement and measurement parameters.
- the present embodiment can also display information on changes of each measurement parameter over time, so as to make a more accurate assessment on whether to withdraw the breathing apparatus from the subject.
- Other measurement parameters are similar to the motion amplitude parameter, and are not described here.
- the subject is in the state of the breathing apparatus to be used, and based on the determined measurement parameters of the subject's diaphragm region, prompt information is output for prompting the operator whether to remove the subject's breathing apparatus.
- the measurement parameters include at least one of the movement amplitude of the diaphragm muscle region, the movement speed of the diaphragm muscle region, the thickness of the diaphragm muscle region, the thickening rate of the diaphragm muscle region, and the strain rate of the diaphragm muscle region.
- the range of motion and the thickening rate can be used independently to evaluate whether the subject's breathing apparatus can be removed, and other measurement parameters can also be used independently to evaluate whether the subject's breathing apparatus can be removed. Thresholds vary depending on the measurement parameters.
- the measured parameters of the subject's diaphragm such as the range of motion or the thickening rate
- the subject's preset physiological signals for comprehensive analysis, and the operator can evaluate whether the subject's breathing equipment.
- other measurement parameters of the subject's diaphragm may not be illustrated here.
- the measured parameters of the subject can be comprehensively analyzed in combination with the preset ultrasound data of the subject's preset tissue, and the operator can evaluate whether the subject can be removed through the comprehensive analysis results. of breathing equipment.
- other measurement parameters of the subject's diaphragm can also be omitted here.
- an ultrasonic measurement method of the diaphragm including:
- Step 51 Excite the ultrasonic probe to transmit ultrasonic waves to the subject's tissue, and receive the echoes of the ultrasonic waves returned by the subject's tissue to obtain ultrasonic echo signals.
- Step 52 obtaining an image of the subject's tissue according to the echo signal of the ultrasound.
- Step 53 Identify the diaphragm region of the subject from the image of the subject's tissue according to the image feature of the diaphragm.
- Step 54 obtains the motion information of the target point of the diaphragm region of the subject
- Step 55 Acquire measurement parameters of the subject's diaphragm region based on the motion information of the target point in the subject's diaphragm region.
- the motion information in step 54 includes at least one of the following: motion amplitude, motion speed, thickness, thickening rate and strain rate.
- prompt information is output to prompt the operator whether to remove the subject's breathing apparatus. As mentioned above, details are not repeated here.
- This embodiment provides an ultrasonic measurement method and system for the diaphragm.
- the processor acquires multiple frames of images of the subject's tissue; and identifies the subject's diaphragm region from the first image in the multiple frames of images according to the image features of the diaphragm. ; Select the tracking region in the diaphragm region of the subject in the first image; The processor searches for the matching region corresponding to the tracking region of the first image in the remaining images in the multi-frame images; The processor obtains according to the tracking region and the matching region tracking the movement trajectory of the region within a third predetermined period of time; based on the movement trajectory, determining a measurement parameter of the subject's diaphragm region; wherein the subject's tissue includes the diaphragm.
- This embodiment automatically measures the diaphragm region of the subject based on speckle tracking, which simplifies the operation of the doctor, makes the measurement more accurate, and provides more accurate reference information for the doctor to predict and evaluate the weaning time.
- any tangible, non-transitory computer-readable storage medium may be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROMs, DVDs, Blu Ray discs, etc.), flash memory, and/or the like .
- These computer program instructions may be loaded on a general purpose computer, special purpose computer or other programmable data processing apparatus to form a machine such that the instructions executed on the computer or other programmable data processing apparatus may generate means for implementing the specified functions.
- Computer program instructions may also be stored in a computer-readable memory that instructs a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable memory form a piece of Articles of manufacture, including implementing means for implementing specified functions.
- Computer program instructions may also be loaded on a computer or other programmable data processing device to perform a series of operational steps on the computer or other programmable device to produce a computer-implemented process such that a process executed on the computer or other programmable device Instructions may provide steps for implementing specified functions.
- the term “comprising” and any other variations are non-exclusive inclusion, such that a process, method, article or device including a list of elements includes not only those elements, but also not expressly listed or included in the process, Other elements of the method, system, article or device.
- the term “coupled” and any other variations thereof refer to physical connections, electrical connections, magnetic connections, optical connections, communication connections, functional connections, and/or any other connection.
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Abstract
一种膈肌的超声测量方法及系统,获取受测者组织的图像(32),根据膈肌的图像特征,在受测者组织的图像中识别受测者的膈肌区域(33),自动获取受测者的膈肌区域的目标M线及其M图像(34、35),基于获取的M图像获得受测者的膈肌区域测量参数(36)。通过超声方法对受测者的膈肌区域进行自动测量,能够简化医生操作,同时也会使得测量更加准确,能够为医生对撤机时间的预测和评估提供更加精确的参考信息。
Description
本申请涉及医学影像技术领域,具体涉及一种膈肌的超声测量方法及系统。
重症监护室(ICU)需要医生预测和评估病人可以撤走呼吸设备的时机。撤机过早或者过晚,都会导致撤机失败,引起严重后果。目前ICU常用呼吸设备相关参数来评估撤机,撤机失败率较高。
ICU已开始通过超声方法来预测和评估病人的撤机时机。目前通过超声方法评估病人膈肌状态,来帮助医生预测撤机时机。
超声评估膈肌目前都是医生手动操作,通过需要几个操作步骤才能完成,操作较为繁琐,而且对医生的经验、技巧有一定要求。
发明内容
一个实施例中,提供了一种膈肌的超声测量方法,包括:
激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
根据所述第一超声波的回波信号,获得所述受测者组织的图像;
根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;
在受测者组织的图像中自动获取所述受测者的膈肌区域的目标M线;
基于所述目标M线,获得在第一预定时间段内沿所述目标M线的M图像;
基于所述目标M线的M图像,确定所述受测者的膈肌区域的测量参数;
其中,受测者组织包括膈肌。
一个实施例中,所述根据膈肌的图像特征,从所述受测者组织的图像中识别所述受测者的膈肌区域,包括:
根据膈肌的图像特征,基于模式识别法或机器学习法从所述受测者组织的图像中识别所述受测者的膈肌区域;或者
检测操作者在所述受测者组织的图像中标识所述受测者的膈肌区域的操作,获取所述受测者组织的图像中的受测者的膈肌区域。
一个实施例中,所述目标M线为与所述受测者的膈肌区域的夹角满足第一预设条件的M线。
一个实施例中,所述目标M线为与所述受测者的膈肌区域的夹角满足第一预设条件的解剖M线。
一个实施例中,所述第一预设条件为所述夹角为60度至90度之间。
一个实施例中,所述目标M线为经过所述受测者的膈肌区域的指定区域的解剖M线。
一个实施例中,所述基于所述目标M线,获得沿所述目标M线的M图像,包括:
基于所述目标M线,激励所述超声探头向所述目标M线所在的受测者组织区域发射第二超声波,并接收返回的所述第二超声波的回波,获得所述第二超声波的回波信号;
根据所述第二超声波的回波信号,获得沿所述目标M线的M图像。
一个实施例中,所述基于所述目标M线的M图像,获取所述受测者的膈肌区域的测量参数,包括:
根据膈肌的图像特征,在所述目标M线的M图像中识别所述受测者的M图膈肌区域;
根据所述M图膈肌区域获得所述受测者的膈肌区域的测量参数。
一个实施例中,所述受测者处于呼吸设备的待使用状态中,所述方法还包括:
基于确定的受测者的膈肌区域的所述测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述膈肌区域的测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。
一个实施例中,所述测量参数为运动幅度,根据所述M图膈肌区域获得所述受测者的膈肌区域的测量参数包括:
根据识别出的所述M图膈肌区域,确定所述M图膈肌区域在所述M图像中的极高位置和极低位置;
根据确定出的所述M图膈肌区域在所述M图像中的极高位置和极低 位置,确定所述受测者的膈肌区域的运动幅度。
一个实施例中,在上述实施例的基础上,还包括:
根据所述目标M线的位置在所述受测者组织的图像中确定与所述M图膈肌区域对应的区域,以获得M图膈肌区域对应区域;
在所述M图膈肌区域对应区域上显示第一类型标识,并动态地更新所述第一类型标识的位置以描述所述M图膈肌区域对应区域的运动轨迹。
一个实施例中,所述第一类型标识的方向表示所述M图膈肌区域对应区域的运动方向。
一个实施例中,所述第一类型标识的长度表示所述M图膈肌区域对应区域的运动幅度。
一个实施例中,所述目标M线包括多条目标M线;
所述M图膈肌区域包括多个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;
根据所述目标M线获得的M图膈肌区域对应区域包括多个M图膈肌区域对应区域,其中每个M图膈肌区域对应区域与一个M图膈肌区域相对应;
所述第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个M图膈肌区域相对应;
其中所述多个第一类型标识用不同的颜色显示。
一个实施例中,在上述实施例的基础上,还包括:
获取所述M图膈肌区域的运动幅度随时间变化的趋势图;
显示所述趋势图。
一个实施例中,在上述实施例的基础上,还包括:
获取每个M图膈肌区域的运动幅度随时间变化的趋势图,获得多个趋势图;
用不同的颜色显示所述多个趋势图;
其中所述多个M图膈肌区域中的任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第一类型标识的颜色相同或者相互关联。
一个实施例中,所述测量参数为厚度或增厚率,所述M图膈肌区域包括识别出的上边缘区域和下边缘区域,根据所述M图膈肌区域获得所 述受测者的膈肌区域的测量参数包括:
确定所述M图膈肌区域识别出的上边缘区域和下边缘区域之间的距离的极大值和极小值;
根据所述极大值和极小值,确定所述受测者的膈肌区域的厚度或增厚率。
一个实施例中,在上述实施例的基础上,还包括:
根据所述目标M线的位置在所述受测者组织的图像中确定所述M图膈肌区域的上边缘区域和下边缘区域对应的区域,以获得M图膈肌边缘区域对应区域;
在所述M图膈肌边缘区域对应区域上显示第二类型标识,并动态地更新所述第二类型标识的位置以描述所述M图膈肌边缘区域对应区域的运动轨迹。
一个实施例中,所述目标M线包括多条目标M线;
所述M图膈肌区域包括多个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;
根据所述目标M线获得的M图膈肌边缘区域对应区域包括多个M图膈肌边缘区域对应区域,其中每个M图膈肌边缘区域对应区域与一个M图膈肌区域相对应,并且每个M图膈肌边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;
所述第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个M图膈肌区域相对应;
其中所述多个第二类型标识用不同的颜色显示。
一个实施例中,在上述实施例的基础上,还包括:
获取所述M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图;
显示所述趋势图。
一个实施例中,,在上述实施例的基础上,还包括:
获取每个M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;
用不同的颜色显示所述多个趋势图;
其中多个M图膈肌区域中任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第二类型标识的颜色相同或者相互 关联。
一个实施例中,所述测量参数为运动幅度,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:
比较所述运动幅度和第一阈值;
当所述运动幅度小于或等于第一阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述运动幅度大于第一阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
一个实施例中,所述测量参数为运动幅度,所述方法还包括:
获取所述受测者的预设生理信号;
将所述运动幅度和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为运动幅度,所述方法还包括:
获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;
将所述运动幅度和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为增厚率,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:
比较所述增厚率和第二阈值,当所述增厚率小于或等于第二阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述增厚率大于第二阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
一个实施例中,所述测量参数为增厚率,所述方法还包括:
获取所述受测者的预设生理信号;
将所述增厚率和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为增厚率,所述方法还包括:
获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;
将所述增厚率和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述预设组织包括心脏组织,所述预设测量指标包 括以下至少一种:左心室射血分数、舒张功能指标、心排量、左心室流出道速度时间积分VTI和下腔静脉IVC参数;或者
所述预设组织包括肺部组织,所述预设测量指标包括B线数量或肺超评分。
一个实施例中,所述预设生理信号包括以下至少一种:呼吸频率、呼吸音量、自主呼吸潮气量、心率、氧饱和度、动脉血气指标、血压、收缩压、血色素、体温、昏迷指数和代谢指数。
一个实施例中,提供了一种超声测量方法,包括:
激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
根据所述第一超声波的回波信号,获得所述第一超声图像;
根据膈肌的图像特征,从所述第一超声图像中识别所述受测者的膈肌区域;
在所述第一超声图像中的受测者的膈肌区域中选取目标区域;
激励超声探头按照多普勒模式向受测者组织发射第二超声波,并接收由受测者组织返回的所述第二超声波的回波,获得所述第二超声波的回波信号;
根据所述第二超声波的回波信号,获得所述目标区域的多普勒图像;
基于所述目标区域的多普勒图像,确定所述受测者的膈肌区域的运动速度;
其中,受测者组织包括膈肌。
一个实施例中,提供了一种膈肌的超声测量方法,包括:
激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
根据所述第一超声波的回波信号,获得受测者组织的图像;
根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;
在受测者组织的图像中获取所述受测者的膈肌区域的目标M线;
基于所述目标M线,获得在第二预定时间段内沿所述目标M线的M图像;
基于所述目标M线的M图像,获取所述受测者的膈肌区域的测量参 数;
其中,受测者组织包括膈肌。
一个实施例中,提供了一种膈肌的超声测量方法,包括:
激励超声探头向受测者组织发射超声波,并接收由受测者组织返回的所述超声波的回波,获得所述超声波的回波信号;
根据所述超声波的回波信号,获得所述受测者组织的图像,所述受测者组织的图像包括多帧图像;
根据膈肌的图像特征,从所述多帧图像中的第一图像中识别所述受测者的膈肌区域;
在所述第一图像中的受测者的膈肌区域中选取跟踪区域;
在所述多帧图像中的其余图像中搜索与所述第一图像的跟踪区域相对应的匹配区域;
根据所述跟踪区域和所述匹配区域获取所述跟踪区域在第三预定时间段内的运动轨迹;
基于所述运动轨迹,确定所述受测者的膈肌区域的测量参数;
其中,受测者组织包括膈肌。
一个实施例中,所述根据膈肌的图像特征,从所述多帧图像中的第一图像中识别所述受测者的膈肌区域,包括:
根据膈肌的图像特征,基于模式识别法或机器学习法从所述多帧图像中的第一图像中识别所述受测者的膈肌区域;或者
检测操作者在所述多帧图像中的第一图像中标识所述受测者的膈肌区域的操作,获取所述受测者的膈肌区域。
一个实施例中,在所述第一图像中的受测者的膈肌区域中选取跟踪区域,包括:
在所述第一图像中的受测者的膈肌区域中随机选取跟踪区域;或者
在所述第一图像中的受测者的膈肌区域中选取间膈距离相等的至少三个跟踪区域。
一个实施例中,还包括:
基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述膈肌区域的测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域 的应变率中至少一种。
一个实施例中,所述测量参数为运动幅度,其中基于所述运动轨迹确定所述受测者的膈肌区域的测量参数包括:
获取所述运动轨迹在所述第三预定时间段内的极高位置和极低位置;
根据所述极高位置和极低位置,确定所述受测者的膈肌区域的运动幅度。
一个实施例中,在上述实施例的基础上,还包括:
在所述跟踪区域上显示第一类型标识,并动态地更新所述第一类型标识的位置以描述所述跟踪区域的运动轨迹。
一个实施例中,所述第一类型标识的方向表示所述跟踪区域的运动方向。
一个实施例中,所述第一类型标识的标识长度表示所述跟踪区域的运动幅度。
一个实施例中,所述跟踪区域包括多个跟踪区域;
所述第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个跟踪区域相对应;
其中所述多个第一类型标识用不同的颜色显示。
一个实施例中,在上述实施例的基础上,还包括:
获取所述跟踪区域的运动幅度随时间变化的趋势图;
显示所述趋势图。
一个实施例中,在上述实施例的基础上,还包括:
获取每个跟踪区域的运动幅度随时时间变化的趋势图,获得多个趋势图;
用不同的颜色显示所述多个趋势图;
其中所述多个跟踪区域中的任意一个跟踪区域所对应的趋势图和所述任意一个跟踪区域所对应的第一类型标识的颜色相同或者相互关联。
一个实施例中,所述测量参数为厚度或增厚率,所述运动轨迹包括获取的上边缘区域和下边缘区域,其中基于所述运动轨迹确定所述受测者的膈肌区域的测量参数包括:
确定所述运动轨迹识别出的上边缘区域和下边缘区域之间的距离的极大值和极小值;
根据所述极大值和极小值,确定所述受测者膈肌区域的厚度或增厚率。
一个实施例中,在上述实施例的基础上,还包括:
根据所述跟踪区域的位置在所述受测者组织的图像中确定所述运动轨迹的上边缘区域和下边缘区域对应的区域,以获得运动轨迹边缘区域对应区域;
在所述运动轨迹边缘区域对应区域上显示第二类型标识,并动态地更新所述第二类型标识的位置以描述所述运动轨迹边缘区域对应区域的运动轨迹。
一个实施例中,所述跟踪区域包括多个跟踪区域;
所述运动轨迹包括多个运动轨迹,其中每个运动轨迹对应一个跟踪区域;
根据所述跟踪区域获得的运动轨迹边缘区域对应区域包括多个运动轨迹边缘区域对应区域,其中每个运动轨迹边缘区域对应区域与一个运动轨迹相对应,并且每个运动轨迹边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;
所述第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个运动轨迹相对应;
其中所述多个第二类型标识用不同的颜色显示。
一个实施例中,在上述实施例的基础上,还包括:
获取所述运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图;
显示所述趋势图。
一个实施例中,还包括:
获取每个运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;
用不同的颜色显示所述多个趋势图;
其中多个运动轨迹中任意一个运动轨迹所对应的趋势图与所述任意一个运动轨迹所对应的第二类型标识的颜色相同或者相互关联。
一个实施例中,所述测量参数为运动幅度,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:
比较所述运动幅度和第一阈值;
当所述运动幅度小于或等于第一阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述运动幅度大于第一阈值,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
一个实施例中,所述测量参数为运动幅度,所述方法还包括:
获取所述受测者的预设生理信号;
将所述运动幅度和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为运动幅度,所述方法还包括:
获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;
将所述运动幅度和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为增厚率,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:
比较所述增厚率和第二阈值;
当所述增厚率小于或等于第二阈值,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者当所述增厚率大于第二阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
一个实施例中,所述测量参数为增厚率,所述方法还包括:
获取所述受测者的预设生理信号;
将所述增厚率和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述测量参数为增厚率,所述方法还包括:
获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;
将所述增厚率和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
一个实施例中,所述预设组织包括心脏组织,所述预设测量指标包括以下至少一种:左心室射血分数、舒张功能指标、心排量、左心室流出道速度时间积分VTI和下腔静脉IVC参数;或者
所述预设组织包括肺部组织,所述预设测量指标包括B线数量或肺超评分。
一个实施例中,所述预设生理参数包括以下至少一种:呼吸频率、呼吸音量、自主呼吸潮气量、心率、氧饱和度、动脉血气指标、血压、收缩压、血色素、体温、昏迷指数和代谢指数。
一个实施例中,提供了一种膈肌的超声测量方法,包括:
激励超声探头向受测者组织发射超声波,并接收由受测者组织返回的超声波的回波,获得所述超声波的回波信号;
根据所述超声波的回波信号,获得受测者组织的图像;
根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;
获取所述受测者的膈肌区域中的目标区域在第四预定时间段内的运动信息;
基于所述运动信息,获得所述受测者的膈肌区域的测量参数;
其中,受测者组织包括膈肌。
一个实施例中,所述运动信息包括以下至少一种:运动幅度、运动速度、厚度、增厚率和应变率。
一个实施例中,所述受测者处于呼吸设备的待使用状态中,在上述实施例的基础上,所述方法还包括:
基于确定的受测者的膈肌区域的所述测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备
一个实施例中,提供了一种膈肌的超声测量系统,包括:
超声探头;
发射电路,用于激励所述超声探头向受测者组织发射第一超声波;
接收电路,用于接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
处理器,用于执行上述实施例中任意一项所述测量方法。
一个实施例中,提供了一种膈肌的超声测量系统,包括:
超声探头;
发射电路,用于激励所述超声探头向受测者组织发射超声波;
接收电路,用于接收由受测者组织返回的所述超声波的回波,获得所述超声波的回波信号;
处理器,用于执行上述实施中任意一项所述测量方法。
图1是一个实施例中超声测量系统的结构示意图;
图2是一个实施例中超声测量方法的流程图;
图3是一个实施例中超声测量方法的示意图;
图4是一个实施例中超声测量方法的示意图;
图5是一个实施例中超声测量方法的示意图;
图6是一个实施例中超声测量方法的示意图;
图7是一个实施例中超声测量方法的示意图;
图8是一个实施例中超声测量方法的示意图;
图9是一个实施例中超声测量方法的流程图;
图10是一个实施例中超声测量方法的流程图;
图11是一个实施例中超声测量方法的示意图;
图12是一个实施例中超声测量方法的示意图;
图13是一个实施例中超声测量方法的示意图;
图14是一个实施例中超声测量方法的流程图。
下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中,很多细节描述是为了使得本申请能被更好的理解。然而,本领域技术人员可以毫不费力的认识到,其中部分特征在不同情况下是可以省略的,或者可以由其他元件、材料、方法所替代。在某些情况下,本申请相关的一些操作并没有在说明书中显示或者描述,这是为了避免本申请的核心部分被过多的描述所淹没,而对于本领域技术人员而言,详细描述这些相关操作并不是必要的,他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外,说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时,方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此,说明书和附图中的各种顺序只是为了清楚描述某一个实施例,并不意味着是必须的顺序,除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身,例如“第一”、“第二”等,仅用于区分 所描述的对象,不具有任何顺序或技术含义。而本申请所说“连接”、“联接”,如无特别说明,均包括直接和间接连接(联接)。
一个实施例中,提供了一种超声测量系统,参考图1所示,包括超声探头110,发射电路和接收电路120,处理器130以及显示器140。
超声探头110包括由阵列式排布的多个阵元组成的换能器(图中未示出),多个阵元排列成一排构成线阵,或排布成二维矩阵构成面阵,多个阵元也可以构成凸阵列。阵元用于根据激励电信号发射超声波束,或将接收的超声波束变换为电信号。因此每个阵元可用于实现电脉冲信号和超声波束的相互转换,从而实现向受测者组织(例如人体或动物体内的器官、组织、血管、胎儿等)发射超声波束、也可用于接收经受测者组织反射回的超声波束的回波。在进行超声检测时,可通过发射序列和接收序列激励哪些阵元用于发射超声波束,哪些阵元用于接收超声波束,或者激励阵元分时隙用于发射超声波束或接收超声波束的回波。参与超声波束发射的阵元可以同时被电信号激励,从而同时发射超声波;或者参与超声波束发射的阵元也可以被具有一定时间间膈的若干电信号激励,从而持续发射具有一定时间间膈的超声波。
发射电路/接收电路120用于产生发射序列/接收序列,发射序列用于激励多个阵元中的部分或者全部向受测者组织发射超声波,发射序列参数包括发射用的阵元位置、阵元数量和超声波束发射参数(例如幅度、频率、发射次数、发射间膈、发射角度、波型、聚焦位置等)。接收序列用于激励多个阵元中的部分或者全部接收超声波束经受测者组织反射后的回波,接收序列参数包括接收用的阵元位置、阵元数量以及回波的接收参数(例如接收的角度、深度等)。当超声波束回波的用途不同或根据超声波束回波生成的图像和/或检测类型不同时,发射序列中的超声波束参数和接收序列中的回波参数也有所不同。
本实施例中,发射/接收电路120用于向超声探头110输出超声成像模式的发射/接收序列,激励超声探头110向受测者组织发射超声波束和接收由受测者组织返回的超声波束的回波。超声探头110用于接收回波的接收阵元接收感兴趣区域反射的回波信号,并将转换成电信号的回波信号输出至处理器。在本实施例中,发射/接收电路120用于在一段时间内持续多次向超声探头110输出发射/接收序列,以使超声探头连续多次向受测者组织发射超声波束,每一次的发射,经后续处理后形成一帧超 声图像,连续的超声图像帧数据形成超声视频数据。
处理器130用于根据超声成像模式发射超声波的回波信号,获得受测者组织的图像,受测者组织包括膈肌。处理器130根据膈肌的图像特征,从所述受测者组织的图像中识别受测者的膈肌区域。处理器130自动获取受测者的膈肌区域的目标M线。处理器130基于获取的目标M线,获取目标M线的M图像。处理器130基于M图像确定受测者膈肌区域的测量参数,其中膈肌区域的测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。处理器130还用于激励超声探头按照多普勒模式向受测者发射超声波,获取受测者的膈肌区域中目标区域的多普勒图像,以获得目标区域的运动速度。
显示器140用于显示输出各种检测结果。该结果包括中间过程的各种图形或测量参数,可以采用图形、图像、文字、数字或图表的方式可视化地呈现给操作者或被测者。
一个实施例中,基于图1所示的上述超声测量系统,参考图2所示,其超声测量方法的流程如下:
步骤11,激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的第一超声波的回波,获得第一超声波的回波信号。
其中,受测者组织包括膈肌。超声探头可以为线阵探头;或者也可以为凸阵探头或是相控阵探头。
步骤12,根据第一超声波的回波信号,获得受测者组织的图像。
步骤13,根据膈肌的图像特征,从受测者组织的图像中识别受测者的膈肌区域。
一个实施例中,超声探头可以为凸阵探头,凸阵探头分辨率低,成像区域深,处理器从受测者组织的图像中自动识别出的受测者的膈肌区域大致为一条弧线,参考图3所示。在本实施例中,在测量膈肌区域的运动幅度及与运动幅度相关的参数中,优选凸阵探头,分辨率低,成像区域深,识别出的膈肌区域近似可以看成是一条弧线。
一个实施例中,超声探头可以为线阵探头,线阵探头分辨率高,成像区域浅,处理器从受测者组织的图像中自动识别出的受测者的膈肌区域能够呈现出膈肌区域的大致轮廓,包括膈肌区域的上边缘和下边缘,参考图4所示。在测量膈肌区域的厚度及与厚度相关的参数中,优选线 阵探头,分辨率高,成像区域浅,能够识别出膈肌区域的上边缘和下边缘,从而得到膈肌区域的厚度及相关参数的测量值。
一个实施例中,根据膈肌的图像特征,处理器基于模式识别法或基于学习法自动从受测者组织的图像中识别受测者的膈肌区域。
一个实施例中,处理器可以基于模式识别法确定受测者的膈肌区域。其中模式识别法根据膈肌的图像特征,比如可以是灰度或纹理特征等,从受测者组织的图像中识别膈肌区域,然后对膈肌区域进行对比度增强处理,再对膈肌区域进行阈值分割与形态学操作,获得膈肌区域。
一个实施例中,处理器还可以基于机器学习方法从受测者组织的图像中识别膈肌区域。其中机器学习法又包括特征类机器学习法和深度学习法。
在使用机器学习方法之前,需要先构建一个有超声视频数据中的图像帧组成的数据库,其中,每帧图像中标记了该图像帧中的膈肌区域。
当机器学习方法为特征类机器学习方法时,需要先对各图像帧进行膈肌区域的特征提取,再构建一个分类器判断它的膈肌区域。其中,特征可以采用PCA、LDA、HOG、Harr、LBP等传统方法进行提取,也可以采用神经网络提取;分类器可以是KNN、SVM、随机森林、adaboost等传统分类器,也可以是一个神经网络模型。
当机器学习方法为深度学习方法时,需要构建一个神经网络模型,如AlexNet、VGG、Inception、ResNet、DenseNet等CNN模型,或是由全连接层构成的多层感知器等,然后使用数据库中的图像帧对这个神经网络进行训练,使其能够根据不同图像帧的输入分别预测它的膈肌区域。
一个实施例中,处理器检测操作者在受测者组织的图像中标识受测者的膈肌区域的操作,获取受测者组织的图像中受测者的膈肌区域。
步骤14,在受测者组织的图像中自动获取受测者的膈肌区域的目标M线。
一个实施例中,在上述实施例的基础上,处理器从受测者组织的图像中自动识别出的受测者的膈肌区域大致为一条弧线,参考图3所示。
处理器在受测者的组织图像中自动获取受测者的膈肌区域的若干条M线。其中M线的方向为声束发射的方向。一个实施例中,采用凸阵探头,膈肌区域的M线通过凸阵探头中心并和大致为弧线的膈肌区域相交。其中M线可以为一条,则M线与弧线的膈肌区域有一个交点;M线也可 以为多条,则M线与弧线的膈肌区域有多个交点。其中“点”的含义不是数学意义上的点,在本实施例中,点可以表示一个像素点,或者若干个像素点的集合。
处理器自动获取若干条M线与受测者的膈肌区域的夹角。M线与弧线的膈肌区域相交于交点,通过所述交点作与弧线的膈肌区域的切线,所述通过交点的切线与M线所成的角度为M先与受测者的膈肌区域的夹角。
将夹角满足第一预设条件的M线确定目标M线。其中第一预设条件为所述夹角满足临床需求。一般临床需求所述夹角在60度至90度之间,包括60度和90度。比如,第一预设条件为所述夹角为90度,参考图3所示。
一个实施例中,在上述实施例的基础上,处理器从受测者组织的图像中自动识别出的受测者的膈肌区域能够呈现出膈肌区域的大致轮廓,包括膈肌区域的上边缘和下边缘,参考图4所示。
受测者组织的图像的M线与受测者的膈肌区域相交,M线与受测者的膈肌区域的上边缘相较于点a,通过点a做上边缘的切线,M线与上边缘的切线所成的夹角为第一夹角。
M线与受测者的膈肌区域的下边缘相较于点b,通过点b做下边缘的切线,M线与下边缘的切线所成的夹角为第二夹角。第一夹角和第二夹角均为M线与受测者的膈肌区域的夹角。
处理器分别计算第一夹角、第二夹角与90度的差值和,差值和满足第一预设条件的至少一条M线确定为至少一条目标M线。
一个实施例中,第一预设条件为所述夹角满足临床需求即可。
一个实施例中,第一预设条件为第一夹角、第二夹角和90度的差值和接近与0度。此时可以认为M线垂直于膈肌区域的上边缘和下边缘,测得的膈肌区域的厚度会更加准确。
目标M线的确定还可以通过解剖M线来确定,其中解剖M线可以为任意方向。
一个实施例中,处理器在受测者组织图,像中自动获取受测者的膈肌区域的若干条解剖M线。参考图5所示,其中在弧线的膈肌区域任意选取若干点,通过所选取的若干点作弧线的膈肌区域的切线,通过所选取的若干点作出所述切线的法线,则其所述法线为膈肌区域的解剖M线。 选取若干点,将会得到若干条对应的解剖M线。
处理器根据若干条解剖M线,确定目标M线的位置。
一个实施例中,处理器在受测者组织图像中自动获取处理器从受测者组织的图像中自动识别出的受测者的膈肌区域能够呈现出膈肌区域的大致轮廓,包括膈肌区域的上边缘和下边缘,参考图4所示。
受测者组织的图像的解剖M线与受测者的膈肌区域相交,在本实施例中,解剖M线与受测者的膈肌区域的上边缘相较于点e,通过点e做上边缘的切线,解剖M线与上边缘的切线所成的夹角为第三夹角。
解剖M线与受测者的膈肌区域的下边缘相较于点g,通过点g做下边缘的切线,解剖M线与下边缘的切线所成的夹角为第四夹角。第三夹角和第四夹角均为解剖M线与受测者的膈肌区域的夹角。
处理器分别计算第三夹角、第四夹角与90度的差值和,差值和满足第一预设条件的解剖M线确定为目标M线。
步骤15,基于所述目标M线,获得在第一预定时间段内沿所述目标M线的M图像。
一个实施例中,在上述实施例的基础上,处理器通过受测者的膈肌区域的M线确定目标M线,处理器控制发射电路激励超声探头向目标M线再次发射第二超声波,接收电路控制超声探头接收所述目标M线返回的第二超声波的回波信号,处理器根据第二超声波的回波信号,获得所述目标M线的M图像。
一个实施例中,处理器可以基于获取受测者组织图像的第一超声波回波信号直接获取确定的目标M线的M图像,而不必重新再通过对目标M线发射第二超声波获取所述目标M线的M图像。
目标M线的M图像能够显示目标M线上所有点的在第一预定时间段内运动幅度随时间变化的趋势,参考图6、7所示。其中“所有点”中“点”的含义不是数学意义上的点,在本实施例中,点可以表示一个像素点,或者若干个像素点的集合。其中第一预定时间段至少为膈肌的一个运动周期,这里的膈肌的运动周期与呼吸周期相对应。
步骤16,基于所述目标M线的M图像,获得所述受测者的膈肌区域的测量参数;其中受测者组织包括膈肌。
其中处理器可以基于目标M线的M图像,自动获得受测者的膈肌区域的测量参数;或者操作者可以基于目标M线的M图像手动获得受测者 的膈肌区域的测量参数。
一个实施例中,根据膈肌的图像特征,从目标M线的M图像获取M图膈肌区域,根据M图膈肌区域获得受测者的膈肌区域的测量参数。其中M图膈肌区域可以理解为在M图上目标M线和弧线的膈肌区域的交点区域对应的区域,其中“点”的含义不是数学意义上的点,在本实施例中,点可以表示一个像素点,或者若干个像素点的集合。若有多条目标M线,则会获得多个M图膈肌区域,其中每个M图膈肌区域与一条目标M线相对应。
其中膈肌区域的测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。
一个实施例中,膈肌区域的测量参数为膈肌区域的运动幅度,根据识别出的M图膈肌区域,确定M图膈肌区域在M图像中的极高位置和极低位置;根据确定出的极高位置和极低位置,确定受测者的膈肌区域的运动幅度。
凸阵探头的分辨率低,成像区域深,通过凸阵探头获取受测者组织的图像上膈肌区域大致呈现一条弧线,参考图3所示。
其中目标M线可以为一条,或者两条或者两条以上,相对应的M图膈肌区域可以为一个,或者为两个或两个以上。本实施例以一个M图膈肌区域为例说明如何确定膈肌区域的运动幅度。
一个实施例中,第一预定时间段为一个运动周期,则M图膈肌区域在一个运动周期内对应一组极高位置和极低位置,则极高位置和极低位置在M图中目标M线对应区域平行方向的距离为受测者的膈肌区域运动幅度。或者也可以理解为在极高位置和极低位置在M图中垂直时间轴方向的距离为受测者的膈肌区域运动幅度。
第一预定时间段为两个或两个以上的运动周期,则M图膈肌区域对应两组及两组以上的极高位置和极低位置,参考图6所示,则根据上述一个周期膈肌区域的运动幅度的计算方法,可以确定每个周期内的膈肌区域的运动幅度。基于获取的每个周期膈肌区域的运动幅度,临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度。例如,基于获取的每个周期膈肌区域的运动幅度,计算多个周期的膈肌区域的平均运动幅度。或者可以选择其中任意一个周期的 运动幅度作为膈肌区域的运动幅度。
上述实施例中为只有一个M图膈肌区域的情况下确定受测者的膈肌区域的运动幅度的方法。
一个实施例中,当从多条目标M线中获取受测者的膈肌区域的多个M图膈肌区域时,依照上述通过一个M膈肌区域确定受测者的膈肌区域的运动幅度方法,分别确定每个M图膈肌区域在每个运动周期内的运动幅度。基于此,临床上可以通操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度。例如,进一步确定每个M图膈肌区域在第一预定时间段内的运动幅度的平均值,然后基于每个M图膈肌区域的运动幅度平均值,确定多个M图膈肌区域的的平均运动幅度。或者还可以计算在同一个运动周期内多个M图膈肌区域运动幅度的平均值作为受测者的膈肌区域的运动幅度。在临床诊断过程中,一般都会多选几条目标M线,这样膈肌区域的运动幅度是基于多个M图膈肌区域进行确定的。相对于通过一条目标M线计算得到膈肌区域的运动幅度将会更加准确,误差会更小。
一个实施例中,根据目标M线的位置在受测者组织的图像中确定与M图膈肌区域对应的区域,以获得M图膈肌区域对应区域;在M图膈肌区域对应区域上显示第一类型标识,并动态地更新第一类型标识的位置以描述M图膈肌区域对应区域的运动轨迹。参考图8所示,其中第一类型标识可以为点状,或者为方形,或者为圆形或者其它形式。在M图膈肌区域对应区域上显示第一类型标识,操作者能够很直观地获取M图膈肌区域对应在在受测者组织的图像上的位置信息,同时也能够直观了解M图膈肌区域对应区域随时间的运动信息。
第一类型标识还可以表示M图膈肌区域对应区域更加丰富的信息。例如,通过第一类型标识的方向表示M图膈肌区域对应区域的运动方向;或者通过第一类型标识的标识长度表示M图膈肌区域对应区域的运动幅度。这样操作者获得的信息将更加丰富和全面,有利于临床诊断。
在上述实施例的基础上,还可以针对多个M图膈肌区域对应区域进行区别显示。
一个实施例中,目标M线包括多条目标M线,M图膈肌区域包括多个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;根据目标M线获得的M图膈肌区域对应区域包括多个M图膈肌区域对应区域,其 中每个M图膈肌区域对应区域与一个M图膈肌区域相对应;第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个M图膈肌区域相对应;其中多个第一类型标识用不同的颜色显示。
本实施例以M图膈肌区域对应区域包括三个M图膈肌区域对应区域为例进行说明,为了更好的解释本实施方案,将三个M图膈肌区域对应区域分别命名为第一对应区域、第二对应区域和第三对应区域,参考图8所示。其中第一对应区域、第二对应区域和第三对应区域分别用三个第一类型标识显示,第一对应区域、第二对应区域和第三对应区域位于各自对应的第一类型标识用不同的颜色显示,以表示每个M图膈肌区域对应区域位于受测者膈肌区域的不同位置。
在上述实施例的基础上,还可以显示M图膈肌区域的运动幅度随时间变化的趋势图。
一个实施例中,获取M图膈肌区域的运动幅度随时间变化的趋势图,处理控制显示器显示趋势图。其中M图膈肌区域包括一个、两个或者更多的M图膈肌区域,其中每个膈肌区域对应显示一个趋势图,这样操作者能够清楚直观地获取目标M线与膈肌区域的交点区域在一段时间内的运动幅度信息。
在上述实施例的基础上,还可以针对多个M图膈肌区域的趋势图进行区别显示;进一步的,还可以将每个M图膈肌区域的趋势图的颜色与其对应的第一类型标识的颜色相同或者相关联。
一个实施例中,获取每个M图膈肌区域的运动幅度随时间变化的趋势图,获得多个趋势图;用不同的颜色显示多个趋势图;其中多个M图膈肌区域中的任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第一类型标识的颜色相同或者相关联。
参考图8所示,其中L1、L2和L3分别为第一对应区域、第二对应区域和第三对应区域的运动幅度趋势图,其中第一对应区域与L1的颜色相同或相关联,第二对应区域和L2的颜色相同或相关联,第三对应区域与L3的颜色相同或相关联。通过上述区分显示方式和关联显示方式,操作者能够非常清楚获取地受测者的膈肌区域上不同的位置的运动幅度随时间变化的信息,有利于操作者更加全面细节地了解膈肌区域不同部位的运动信息。
一个实施例中,膈肌区域的测量参数还可以为膈肌区域的厚度或增 厚率。根据膈肌的图像特征,在目标M线的M图像中识别受测者的M图膈肌区域,根据M图膈肌区域获得受测者的膈肌区域的厚度或增厚率。
线阵探头的分辨率高,成像区域浅,通过线阵探头获取受测者组织的图像上膈肌区域能够呈现出有厚度的大致轮廓,参考图4所示。
一个实施例中,M图膈肌区域包括识别出的上边缘区域和下边缘区域,确定M图膈肌区域识别出的上边缘区域和下边缘区域之间的距离的极大值和极小值,根据极大值和极小值确定受测者的膈肌区域的厚度或增厚率。
其中M图膈肌区域可以为一个,或者为两个或两个以上,本实施例一个M图膈肌区域为例说明如何确定膈肌区域的厚度或增厚率。
一个实施例中,第一预定时间段为一个运动周期,确定M图膈肌区域的上边缘区域和下边缘区域之间的距离在一个运动周期内对应一组极大值和极小值,参考图7所示。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的厚度或增厚率。例如,将所述极大值和极小值的平均值为受测者的膈肌区域的厚度。或者无需计算平均厚度,将获得的极大值和极小值直接作为膈肌区域的厚度。增厚率为(厚度极大值-厚度极小值)/厚度极小值,通过极大值、极小值以及增厚率的计算公式,则可以确定受测者的膈肌区域的增厚率。
需要说明的是,在本实施例中,M图膈肌区域的上边缘和下边缘之间的距离为M图膈肌区域的上边缘和下边缘在M图中目标M线对应区域平行方向的距离,可以将M图膈肌区域的上边缘和下边缘之间的距离理解为M图膈肌区域的厚度。
第一预定时间段为两个运动周期或者两个以上运动周期时,M图膈肌区域对应两组及两组以上的极大值和极小值。根据上述方法,可以确定每个周期内的膈肌区域的厚度或增厚率。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度。例如,统计每个运动周期内的极大值和极小值,分别计算每个运动周期内的厚度平均值和增厚率;然后通过每个运动周期内的厚度平均值计算多个运动周期内的厚度平均值,多个运动周期内的厚度平均值即为膈肌区域的厚度;通过每个运动周期内的增厚率计算多个运动周期内的增厚率的平均值,多个运动周期内的增厚率的平均值即为膈肌区域的增厚率。或者也可以将多个运动周期中任意一个运动周期的厚度平均值作为受测者膈 肌区域的厚度。或者将多个运动周期中任意一个周期的极大值和极小值直接作为受测者膈肌区域的厚度。将多个运动周期中任意一个运动周期的增厚率作为受测者膈肌区域的增厚率。
上述实施例中为只有一个M图膈肌区域的情况下确定受测者的膈肌区域的厚度或增厚率的方法。
一个实施例中,当从多条目标M线中获取受测者的膈肌区域的多个M图膈肌区域时,依照上述通过一个M图膈肌区域确定受测者的膈肌区域的厚度或增厚率方法,分别确定每个M图个膈肌区域在每个运动周期内的厚度或增厚率。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度。例如,进一步确每个M图膈肌区域在第一预定时间段内的厚度的平均值或增厚率的平均值,然后基于每个M图膈肌区域的厚度的平均值或增厚率平均值,确定多个M图膈肌区域的平均厚度或平均增厚率。或者还可以计算在同一个运动周期内多个M图膈肌区域厚度的平均值或增厚率的平均值作为受测者的膈肌区域的厚度或增厚率。在临床诊断过程中,一般都会多选几条目标M线,这样膈肌区域的厚度或增厚率是基于多个M图膈肌区域进行确定的。相对于通过一条目标M线计算得到膈肌区域的厚度或增厚率将会更加准确,误差会更小。
一个实施例中,根据目标M线的位置在受测者组织的图像中确定与M图膈肌区域的上边缘区域和下边缘区域对应的区域,以获得M图膈肌边缘区域对应区域;在M图膈肌区域对应区域上显示第二类标识,并动态得更新第二类型标识的位置以描述M图膈肌边缘区域对应区域的运动轨迹。其中第二类型标识可以与第一类型标识相同,或者第二类型标识也可以与第一类型标识不同,在这里第一类型标识和第二类型标识仅是为了区分是在膈肌区域不同参数的测量中的标识。
在M图膈肌边缘对应区域上显示第二类型标识,操作者能够直观地获取M图膈肌区域的上边缘区域和下边缘区域在受测者组织的图像上的位置信息,同时也能够直观了解M图膈肌边缘区域对应区域随时间的运动信息。
在上述实施例的基础上,还可以针对多个M图膈肌边缘区域对应区域进行区别显示。
一个实施例中,目标M线包括多条目标M线,M图膈肌区域包括多 个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;根据目标M线获得的M图膈肌边缘区域对应区域包括多个M图膈肌边缘区域对应区域,其中每个M图膈肌边缘区域对应区域与一个M图膈肌区域相对应,并且每个M图膈肌边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个M图膈肌区域相对应;其中多个第二类型标识用不同的颜色显示。
在上述实施例的基础上,还可以显示M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,即显示M图膈肌区域的厚度随时间变化的趋势图。
一个实施例中,获取M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,处理控制显示器显示趋势图。其中M图膈肌区域包括一个、两个或者更多的M图膈肌区域,每个M图膈肌区域对应包括上边缘区域和下边缘区域,其中每个M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间的变化对应显示一个趋势图,这样操作者能够清楚直观地获取目标M线与膈肌区域的交点区域的厚度在一段时间内的变化信息。
在上述实施例的基础上,还可以针对多个M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图进行区别显示;进一步的,还可以将每个M图膈肌区域所对应的趋势图的颜色与其对应的第一类型标识的颜色相同或者相关联。
一个实施例中,获取每个M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;用不同的颜色显示多个趋势图;其中多个M图膈肌区域中的任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第一类型标识的颜色相同或者相关联。通过上述区分显示方式和关联显示方式,操作者能够直观清楚地获取受测者膈肌区域上不同位置对应的厚度变化趋势信息。
通过上述实施例,通过获取的M图膈肌区域,可以确定受测者膈肌区域的测量参数,测量参数包括运动幅度,或者还可以确定受测者膈肌区域的厚度或增厚率,或者还可以基于获取的运动幅度以及运动时间信息获取膈肌区域的运动速度,或者基于膈肌区域的厚度信息,可以进一步测量膈肌应变率,包括纵向应变率和径向应变率。
上述通过获取的M图膈肌区域确定的测量参数,通过确定测测量参数,操作者可以获取膈肌区域的大致运动状态信息。在此基础上,本实施例还可以显示各测量参数随时间变化的信息,比如M图膈肌区域的运动幅度随时间变化的趋势图,M图膈肌边缘区域的厚度随时间变化的信息,这些实时状态信能够给操作者提供更加全面准确的参考信息,从而对是否对受测者撤掉呼吸设备做出更加准确的评估。
其它测量参数与运动幅度参数类似,在此不再举例说明。
一个实施例中,受测者的膈肌区域的运动速度可以基于膈肌区域的运动幅度与运动时间来获取,膈肌区域的运动速度还可以基于多普勒原理获取的超声图像来获取,本实施例提供了一种膈肌的运动速度的超声测量方法,其超声测量方法的流程如下:
步骤21,激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
步骤22,根据所述第一超声波的回波信号,获得所述第一超声图像;
步骤23,根据膈肌的图像特征,从所述第一超声图像中识别所述受测者的膈肌区域;
步骤24,在所述第一超声图像中的受测者的膈肌区域中选取目标区域;
步骤25,激励超声探头按照多普勒模式向受测者组织发射第二超声波,并接收由受测者组织返回的所述第二超声波的回波,获得所述第二超声波的回波信号;
步骤26,根据所述第二超声波的回波信号,获得所述目标区域的多普勒图像;
步骤27,基于所述目标区域的多普勒图像,确定所述受测者的膈肌区域的运动速度;其中,受测者组织包括膈肌。
在本实施例的基础上,多普勒图像包括基于多普勒原理获得的所有的类型的图像,包括C模式图像,D模式图像和频谱多普勒图像。
其中在步骤25中,激励超声探头按照多普勒模式向受测者组织发射第二超声波,包括激励超声探头按照多普勒模式向受测者包含膈肌的组织区域发射第二超声波,或者也可以激励超声探头按照多普勒模式向步骤23中确定的受测者的膈肌区域发射第二超声波,或者也可以激励超 声探头按照多普勒模式向步骤24中确定的目标区域发射第二超声波。基于步骤25中的第二超声波的回波信号,获得目标区域的多普勒图像。基于目标区域的多普勒图像,确定受测者的膈肌区域的运动速度。
受测者的膈肌区域的运动状态能够表征受测者自主呼吸努力程度,临床上受测者自主呼吸努力程度通常是评估受测者是否能够撤掉呼吸设备的关键因素之一。故基于受测者的膈肌区域的运动状态获取的测量参数信息与评估受测者是否能够撤掉呼吸设备存在量化关系。
一个实施例中,受测者处于呼吸设备的待使用状态中,基于确定的受测者的膈肌区域的测量参数,输出提示信息,用于提示操作者是否撤掉受测者的呼吸设备。其中测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。
以下以测量参数分别为运动幅度、增厚率为例进行说明。
一个实施例中,测量参数为运动幅度,比较运动幅度和第一阈值,当运动幅度小于或等于第一阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当运动幅度大于第一阈值时,则输出提示操作者能够撤掉受测者的呼吸设备的信息。其中第一阈值一般来说都是根据临床经验总结得到,第一阈值可以基于临床实际情况而有所不同。第一阈值可以处理器自动设定,或者操作者根据实际情况手动设定。
一个实施例中,测量参数为增厚率,比较增厚率和第二阈值,当增厚率小于或等于第二阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当增厚率大于第二阈值时,则输出提示操作者能够撤掉受测者的呼吸设备的信息。其中第二阈值一般来说都是根据临床经验总结得到,第二阈值可以基于临床实际情况而有所不同。第二阈值可以处理器自动设定,或者操作者根据实际情况手动设定。
运动幅度、增厚率分别可以单独用来评估是否能够撤掉受测者的呼吸设备,其它测量参数也可以单独用来评估是否能够撤掉受测者的呼吸设备,具体的阈值会根据测量参数的不同而有所不同。
运动幅度或增厚率还可以结合受测者的预设生理信号进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。
一个实施例中,测量参数为运动幅度,获取受测者的预设生理信号,将运动幅度和受测者的预设生理信号进行综合分析,输出提示信息,用 以提示操作者是否撤掉所述受测者的呼吸设备。
以膈肌的运动幅度和呼吸频率为例进行具体说明。计算呼吸频率与膈肌运动幅度之间的比值作为所述综合分析结果,该呼吸频率和膈肌位移之间的比值帮助医生判断是否可以撤掉呼吸机,比如,该呼吸频率和膈肌位移之间的比值不大于某个阈值,则可以撤呼吸机,例如该阈值可以是1.3次/(分钟*毫米)。
一个实施例中,测量参数为增厚率,获取受测者的预设生理信号,将增厚率和受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
在上述实施例的基础上,其中预设的生理信号包括以下至少一种:呼吸频率、呼吸音量、自主呼吸潮气量、心率、氧饱和度、动脉血气指标、血压、收缩压、血色素、体温、昏迷指数和代谢指数。
同样的,受测者膈肌的其它测量参数也可以结合受测者的预设生理信号结合进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。在此不再举例说明。
一个实施例中,运动幅度或增厚率还可以结合受测者的超声图像测量指标进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。
一个实施例中,测量参数为运动幅度,获取受测者的预设组织的超声图像,从预设组织的超声图像中获取预设测量指标;将运动幅度和受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。例如,将膈肌的运动幅度和心排量参数进行综合分析生成量化指标,该量化指标与预设阈值进行比较,基于比较结果可以用于评估能够撤掉呼吸设备。
一个实施例中,测量参数为增厚率,获取受测者的预设组织的超声图像,从预设组织的超声图像中获取预设测量指标;将增厚率和受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
在上述实施例的基础上,其中预设组织包心脏组织,所述预设测量指标包括以下至少一种:左心室射血分数、舒张功能指标、心排量、左心室流出道速度时间积分VTI和下腔静脉IVC参数。其中下腔静脉IVC参数包括下腔静脉呼气末内径,下腔静脉吸气末内径,下腔静脉塌陷率, 下腔静脉扩张率,下腔静脉变异率。
一个实施例中,其中预设组织包括肺部组织,所述预设测量指标包括B线数量或肺超评分。
同样的,受测者膈肌的其它测量参数也可以结合受测者的超声数据结合进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。在此不再举例说明。
一个实施例中,提供了一种膈肌的超声测量方法,其流程图参考图9所示,具体步骤如下:
步骤31,激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;
步骤32,根据所述第一超声波的回波信号,获得受测者组织的图像;
步骤33,根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;
步骤34,在受测者组织的图像中获取所述受测者的膈肌区域的目标M线;
步骤35,基于所述目标M线,获得在第二预定时间段内沿所述目标M线的M图像;
步骤36,基于所述目标M线的M图像,获取所述受测者的膈肌区域的测量参数;其中,受测者组织包括膈肌。
在本实施例中,步骤34中包括处理器在受测者组织的图像中自动获取受测者的膈肌区域的目标M线,或者操作者在受测者组织的图像中手动获取受测者的膈肌区域的目标M线。其它步骤如前所述,在此不再赘述。
上述实施例提供了一种膈肌的超声测量方法及系统,处理器获取受测者组织的图像,根据膈肌的图像特征,处理器在受测者组织的图像中识别受测者的膈肌区域,处理器获取受测者的膈肌区域的目标M线,基于目标M线,获取目标M线的M图像,基于获取的M图像确定受测者膈肌区域的测量参数。通过超声方法对受测者的膈肌区域进行自动测量,能够简化医生操作,同时也会使得测量更加准确,能够为医生对撤机时间的预测和评估提供更加精确的参考信息。
一个实施例中,提供了一种超声测量系统,参考图1所示,包括超声探头110,发射电路和接收电路120,处理器130以及显示器140。
其中处理器130用于根据超声成像模式发射超声波的回波信号,获得受测者组织的图像,受测者组织的图像包括多帧,受测者组织包括膈肌。处理器130根据膈肌的图像特征,从所述多帧图像中的第一图像中识别受测者的膈肌区域。处理器130在第一图像中的受测者的膈肌区域中选取跟踪区域。处理器130在所述多帧图像中的其余图像中搜索与所述第一图像的跟踪区域相对应的匹配区域。处理器130根据跟踪区域和匹配区域获取跟踪区域在第三预定时间段内的运动轨迹。处理器130基于跟踪区域的运动轨迹,确定受测者的膈肌区域的测量参数。
超声测量系统中的超声探头110、发射电路和接收电路120以及显示器140参考前文所述,在此不再赘述。
一个实施例中,基于图1所示的上述超声测量系统,参考图10所示,其超声测量方法的流程如下:
步骤41,激励超声探头向受测者组织发射超声波,并接收由受测者组织返回的所述超声波的回波,获得所述超声波的回波信号。
其中,受测者组织包括膈肌。超声探头可以为线阵探头;或者也可以为凸阵探头或是相控阵探头。
步骤42,根据所述超声波的回波信号,获得受测者组织的图像,所述受测者组织的图像包括多帧图像。
控制超声探头始终在受测者的同一部位发射超声波,获取的多帧超声图像基本上可以认为是针对同一组织区域获取的图像,不可避免的微小误差可以不考虑,比如操作者在控制探头的过程中会有轻微的抖动或移动,这些都可忽略不计。
步骤43,根据膈肌的图像特征,从所述多帧图像中的第一图像中识别所述受测者的膈肌区域。
一个实施例中,超声探头可以为凸阵探头,凸阵探头分辨率低,成像区域深,处理器从受测者组织的图像中自动识别出的受测者的膈肌区域大致为一条弧线。
一个实施例中,超声探头可以为线阵探头,线阵探头分辨率高,成像区域浅,处理器从受测者组织的图像中自动识别出的受测者的膈肌区 域能够呈现出膈肌区域的大致轮廓,包括膈肌区域的上边缘和下边缘。
一个实施例中,根据膈肌的图像特征,处理器基于模式识别法或基于学习法自动从多帧图像中的第一图像中识别受测者的膈肌区域。
一个实施例中,处理器可以基于模式识别法确定受测者的膈肌区域。其中模式识别法根据膈肌的图像特征,比如可以是灰度或纹理特征等,从受测者组织的图像中识别膈肌区域,然后对膈肌区域进行对比度增强处理,再对膈肌区域进行阈值分割与形态学操作,获得膈肌区域。
一个实施例中,处理器还可以基于机器学习方法从第一图像中识别膈肌区域。其中机器学习法又包括特征类机器学习法和深度学习法。参考前文所述,在此不再赘述。
一个实施例中,处理器检测操作者在第一图像中标识受测者的膈肌区域的操作,获取第一图像中受测者的膈肌区域。
步骤44,在所述第一图像中的受测者的膈肌区域中选取跟踪区域。
其中,处理器可以自动在第一图像中的受测者的膈肌区域中选取跟踪区域,或者操作者手动在第一图像中的受测者的膈肌区域中选取跟踪区域。
一个实施例中,在第一图像中受测者的膈肌区域中随机选取跟踪区域,或者在所述第一图像中的受测者的膈肌区域中选取间膈距离相等的至少三个跟踪区域。
步骤45,在所述多帧图像中的其余图像中搜索与所述第一图像的跟踪区域相对应的匹配区域。
获取的多帧超声图像基本上可以认为是针对同一组织区域获取的图像,这也是能进行斑点追踪方法的前提条件。其中,可以是基于第一图像中的跟踪区域进行搜索,或者也可以是基于第一图像之外的其它帧图像中已经搜索出的匹配区域进行搜索。
一个实施例中,在多帧图像中的其余图像中搜索与第一帧图像的跟踪点相对应的匹配区域,参考图11所示,可以基于邻域特征值进行匹配,其中邻域特征值可以为领域内灰度均值,方差等统计值。
步骤46,根据所述跟踪区域和所述匹配区域获取所述跟踪区域在第三预定时间段内的运动轨迹。
其中第三预定时间段至少为一个膈肌运动周期。
步骤47,基于所述运动轨迹,确定所述受测者的膈肌区域的测量参 数;其中,受测者组织包括膈肌。
其中处理器可以基于运动轨迹,自动获得受测者的膈肌区域的测量参数;或者操作者可以基于运动轨迹手动获得受测者的膈肌区域的测量参数。
其中膈肌区域的测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。
一个实施例中,膈肌区域的测量参数为膈肌区域的运动幅度。根据获取的跟踪区域的运动轨迹,获取运动轨迹在第三预定时间段内的极高位置和极低位置;根据确定出的极高位置和极低位置,确定受测者的膈肌区域的运动幅度。
凸阵探头的分辨率低,成像区域深,通过凸阵探头获取受测者组织的图像上膈肌区域大致呈现一条弧线,参考图3所示。
其中一个跟踪区域对应一个运动轨迹,跟踪区域可以为一个,或者为两个或两个以上,相应的运动轨迹可以为一个,或者为两个或两个以上。本实施例以一个运动轨迹为例说明如何确定膈肌区域的运动幅度测量。
一个实施例中,第一预定时间段为一个运动周期,运动轨迹的一个运动周期内对应一组极高位置和极低位置,则极高位置和极低位置在运动轨迹中垂直时间轴方向的距离为受测者的膈肌区域运动幅度。
第一预定时间段为两个或两个以上的运动周期,则运动轨迹对应两组及两组以上的极高位置和极低位置,则根据上述一个运动轨迹的运动幅度的计算方法,可以确定每个周期内的运动轨迹的运动幅度。基于获取的每个周期运动轨迹的运动幅度,临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度,如前所述,在此不再赘述。
上述实施例中为只有一个运动轨迹的情况下确定受测者的膈肌区域的运动幅度的方法。
一个实施例中,从多个跟踪区域中获取受测者的膈肌区域的多个运动轨迹时,依照上述通过一个运动轨迹确定受测者的膈肌区域的运动幅度方法,分别确定每个运动轨迹在每个运动周期内的运动幅度。基于此,临床上可以通操作者的需求进行选择或变换,以获得操作者所需要的膈 肌区域的运动幅度,参考前文所述,在此不再赘述。在临床诊断过程中,一般都会多选几个跟踪区域,这样膈肌区域的运动幅度是基于多个运动轨迹进行确定的。相对于通过一个跟踪区域计算得到膈肌区域的运动幅度将会更加准确,误差会更小。
一个实施例中,在跟踪区域上显示第一类型标识,并动态地更新第一类型标识的位置以描述跟踪区域的运动轨迹。其中第一类型标识可以为点状,或者为方形,或者为圆形或者其它形式。在跟踪区域上显示第一类型标识,操作者能够很直观地获取运动轨迹对应的跟踪区域在受测者组织的图像上的位置信息,同时也能够直观了解跟踪区域的运动幅度随时间的变化信息。
第一类型标识还可以表示跟踪区域更加丰富的信息。例如,通过第一类型标识的方向表示跟踪区域的运动方向;或者通过第一类型标识的标识长度表示跟踪区域的运动幅度。这样操作者获得的信息将更加丰富和全面,有利于临床诊断。
在上述实施例的基础上,还可以针对多个跟踪区域进行区别显示。
一个实施例中,跟踪区域包括多个跟踪区域,第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个跟踪区域相对应;其中多个第一类型标识用不同的颜色显示。
本实施例以跟踪区域包括三个跟踪区域为例进行说明,为了更好的解释本实施方案,将三个跟踪区域分别命名为第一跟踪区域、第二跟踪区域和第三跟踪区域。参考图12所示,其中第一跟踪区域、第二跟踪区域和第三跟踪区域分别用三个第一类型标识显示,第一跟踪区域、第二跟踪区域和第三跟踪区域位于各自对应的第一类型标识用不同的颜色显示,以表示每个跟踪区域位于受测者膈肌区域的不同位置。
在上述实施例的基础上,还可以显示跟踪区域的运动幅度随时间变化的趋势图。
一个实施例中,获取跟踪区域的运动幅度随时间变化的趋势图,处理控制显示器显示趋势图。其中跟踪区域包括一个、两个或者更多的跟踪区域,其中每个跟踪区域对应显示一个趋势图,这样操作者能够清楚直观地获取跟踪区域在一段时间内的运动幅度信息。
在上述实施例的基础上,还可以针对多个跟踪区域的运动幅度随时间变化的趋势图进行区别显示;进一步的,还可以将每个跟踪区域所对 应的趋势图的颜色与所述每个跟踪区域所对应的第一类型标识的颜色相同或者相关联。
一个实施例中,获取每个跟踪区域的运动幅度随时间变化的趋势图,获得多个趋势图;用不同的颜色显示多个趋势图;其中多个跟踪区域中的任意一个跟踪区域所对应的趋势图和所述任意一个跟踪区域所对应的第一类型标识的颜色相同或者相关联。
参考图12所示,其中M1、M2和M3分别为第一跟踪区域、第二跟踪区域和第三跟踪区域的运动幅度趋势图。其中第一跟踪区域与M1的颜色相同或相关联,第二跟踪区域和M2的颜色相同或相关联,第三跟踪区域与M3的颜色相同或相关联。通过上述区分显示方式和关联显示方式,操作者能够非常清楚获取地受测者膈肌区域上不同的位置对应的运动幅度信息。
一个实施例中,膈肌区域的测量参数还可以为膈肌区域的厚度或增厚率。基于跟踪区域在第三预定时间段内的运动轨迹,确定受测者的膈肌区域的厚度或增厚率。
线阵探头的分辨率高,成像区域浅,通过线阵探头获取受测者组织的图像上膈肌区域能够呈现出有厚度的大致轮廓,参考图4所示。
一个实施例中,跟踪区域的运动轨迹包括获取的上边缘区域和下边缘区域,确定运动轨迹获取的上边缘区域和下边缘区域之间的距离的极大值和极小值,根据极大值和极小值确定受测者的膈肌区域的厚度或增厚率。
其中跟踪区域可以为一个,或者为两个或两个以上,一个跟踪区域对应一个运动轨迹,本实施例一个跟踪区域为例说明如何确定膈肌区域的厚度或增厚率。
一个实施例中,第一预定时间段为一个运动周期,确定跟踪区域的运动轨迹的上边缘区域和下边缘区域之间的距离在一个运动周期内对应一组极大值和极小值。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的厚度或增厚率。例如,将所述极大值和极小值的平均值为受测者的膈肌区域的厚度。或者无需计算平均厚度,将获得的极大值和极小值直接作为膈肌区域的厚度。增厚率为(厚度极大值-厚度极小值)/厚度极小值,通过极大值、极小值以及增厚率的计算公式,则可以确定受测者的膈肌区域的增厚率。
需要说明的是,在本实施例中,跟踪区域的运动轨迹的上边缘区域和下边缘区域之间的距离为跟踪区域的运动轨迹的上边缘区域和下边缘区域在运动轨迹的垂直时间轴方向的距离,可以将跟踪区域的运动轨迹的上边缘区域和下边缘区域之间的距离理解为跟踪区域的厚度。
第一预定时间段为两个运动周期或者两个以上运动周期时,跟踪区域区域对应两组及两组以上的极大值和极小值。根据上述方法,可以确定每个周期内的膈肌区域的厚度或增厚率。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的厚度或增厚率。参考前文所述,在此不再赘述。
上述实施例中为在选取一个跟踪区域的情况下确定受测者的膈肌区域的厚度或增厚率的方法。
一个实施例中,当从多个跟踪区域中获取受测者的膈肌区域的多个运动轨迹时,依照上述通过一个跟踪区域确定受测者的膈肌区域的厚度或增厚率方法,分别确定每个跟踪区域在每个运动周期内的厚度或增厚率。临床上可以基于操作者的需求进行选择或变换,以获得操作者所需要的膈肌区域的运动幅度,参考前文所述,在此不再赘述。在临床诊断过程中,一般都会多选几个跟踪区域,这样膈肌区域的厚度或增厚率是基于多个跟踪区域的运动轨迹进行确定的。相对于通过一个跟踪区域的运动轨迹计算得到膈肌区域的厚度或增厚率将会更加准确,误差会更小。
一个实施例中,根据跟踪区域的位置在受测者组织的图像中确定运动轨迹的上边缘区域和下边缘区域对应的区域,以获得运动轨迹边缘区域对应区域;在运动轨迹边缘区域对应区域上显示第二类标识,并动态得更新第二类型标识的位置以描述运动轨迹边缘区域对应区域的运动轨迹。其中第二类型标识可以与第一类型标识相同,或者第二类型标识也可以与第一类型标识不同,在这里第一类型标识和第二类型标识仅是为了区分是在膈肌区域不同参数的测量中的标识。
在运动轨迹边缘对应区域上显示第二类型标识,操作者能够直观地获取运动轨迹的上边缘区域和下边缘区域在受测者组织的图像上的位置信息,同时也能够直观了解运动轨迹边缘区域对应区域随时间的运动信息。
在上述实施例的基础上,还可以针对多个运动轨迹边缘区域对应区域进行区别显示。
一个实施例中,跟踪区域包括多个跟踪区域,运动轨迹包括多个运动轨迹,其中每个运动轨迹对应一条跟踪区域;根据跟踪区域获得运动轨迹边缘区域对应区域包括多个运动轨迹边缘区域对应区域,其中每个运动轨迹边缘区域对应区域与一个运动轨迹相对应,并且每个运动轨迹边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个运动轨迹区域相对应;其中多个第二类型标识用不同的颜色显示。
本实施例以运动轨迹边缘区域对应区域包括三个运动轨迹边缘区域对应区域为例进行说明,为了更好的解释本实施方案,将三个运动轨迹边缘区域对应区域分别命名为第一边缘对应区域、第二边缘对应区域和第三边缘对应区域。参考图13所示,其中第一边缘对应区域、第二边缘对应区域和第三边缘对应区域分别用第二类型标识显示,第一边缘对应区域、第二边缘对应区域和第三边缘对应区域的第二类型标识用不同的颜色显示,以区分跟踪区域位于受测者膈肌区域的不同位置。
在上述实施例的基础上,还可以显示运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图。
一个实施例中,获取运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,处理控制显示器显示趋势图。其中跟踪区域的运动轨迹包括一个、两个或者更多的运动轨迹,每个运动轨迹对应包括上边缘区域和下边缘区域,其中每个运动轨迹的上边缘区域和下边缘区域之间的距离随时间的变化对应显示一个趋势图,即显示的是每个跟踪区域的厚度随时间变化的趋势图,这样操作者能够清楚直观地获取跟踪区域的厚度在一段时间内的变化信息。
在上述实施例的基础上,还可以针对多个跟踪区域的运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图进行区别显示;进一步的,还可以将每个跟踪区域的厚度变化所对应的趋势图的颜色与所述每个跟踪区域对应的第二类型标识的颜色相同或者相关联。
一个实施例中,获取每个跟踪区域的运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;用不同的颜色显示多个趋势图;其中多个跟踪区域中的任意一个跟踪区域所对应的趋势图和所述任意一个跟踪区域所对应的第二类型标识的颜色相同或者相关联。参考图13所示,其中N1、N2和N3分别为第一边缘对应区域、 第二边缘对应区域和第三边缘对应区域的厚度变化趋势图,其中N1、N2和N3趋势图显示的颜色分别与各自对应边缘对应区域的第二类型标识显示的颜色相同。
通过上述实施例,通过对跟踪区域进行斑点追踪,可以确定受测者膈肌区域的测量参数,测量参数包括运动幅度,或者还可以确定受测者膈肌区域的厚度或增厚率,或者还可以基于获取的运动幅度以及运动时间信息获取膈肌区域的运动速度,或者基于膈肌区域的厚度信息,可以进一步测量膈肌应变率,包括纵向应变率和径向应变率。
上述通过对获取的跟踪区域进行斑点追踪确定的测量参数,通过确定测测量参数,操作者可以获取膈肌区域的大致运动状态信息。在此基础上,本实施例还可以显示各测量参数随时间变化的信息,从而对是否对受测者撤掉呼吸设备做出更加准确的评估。其它测量参数与运动幅度参数类似,在此不再举例说明。
一个实施例中,受测者处于呼吸设备的待使用状态中,基于确定的受测者的膈肌区域的测量参数,输出提示信息,用于提示操作者是否撤掉受测者的呼吸设备。其中测量参数包括膈肌区域的运动幅度、膈肌区域的运动速度、膈肌区域的厚度、膈肌区域的增厚率和膈肌区域的应变率中至少一种。
一个实施例中,运动幅度、增厚率分别可以单独用来评估是否能够撤掉受测者的呼吸设备,其它测量参数也可以单独用来评估是否能够撤掉受测者的呼吸设备,具体的阈值会根据测量参数的不同而有所不同。
一个实施例中,受测者膈肌的测量参数,如运动幅度或增厚率可以结合受测者的预设生理信号结合进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。同样的,受测者膈肌的其它测量参数也可以在此不再举例说明。
一个实施例中受测者的测量参数,如运动幅度或增厚率可以结合受测者的预设组织的预设超声数据进行综合分析,通过综合分析结果操作者评估是否能够撤掉受测者的呼吸设备。同样的,受测者膈肌的其它测量参数也可以在此不再举例说明
一个实施例中,参考图14所示,提供了一种膈肌的超声测量方法,包括:
步骤51,激励所述超声探头向受测者组织发射超声波,并接收由受 测者组织返回的所述超声波的回波,获得超声波的回波信号。
步骤52,根据超声波的回波信号,获得受测者组织的图像。
步骤53,根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域。
步骤54,获取受测者的膈肌区域的目标点的运动信息;
步骤55,基于所述受测者的膈肌区域的目标点的运动信息,获取受测者的膈肌区域的测量参数。
其中,在步骤54中的运动信息包括以下至少一种:运动幅度、运动速度、厚度、增厚率和应变率。
在上述实施例的基础上,基于确定的受测者的膈肌的测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。如前所述,在此不再赘述。
本实施例提供了一种膈肌的超声测量方法及系统,处理器获取受测者组织的多帧图像;根据膈肌的图像特征,从多帧图像中的第一图像中识别受测者的膈肌区域;在第一图像中的受测者的膈肌区域选取跟踪区域;处理器在多帧图像中其余图像中搜索与第一图像的跟踪区域相对应的匹配区域;处理器根据跟踪区域和匹配区域获取跟踪区域在第三预定时间段内的运动轨迹;基于所述运动轨迹,确定所述受测者的膈肌区域的测量参数;其中,受测者组织包括膈肌。本实施例基于斑点追踪对受测者的膈肌区域进行自动测量,能够简化医生操作,同时也会使得测量更加准确,能够为医生对撤机时间的预测和评估提供更加精确的参考信息。
本文参照了各种示范实施例进行说明。然而,本领域的技术人员将认识到,在不脱离本文范围的情况下,可以对示范性实施例作出改变和修正。例如,各种操作步骤以及用于执行操作步骤的组件,可以根据特定的应用或考虑与系统的操作相关联的任何数量的成本函数以不同的方式实现(例如一个或多个步骤可以被删除、修改或结合到其他步骤中)。
另外,如本领域技术人员所理解的,本文的原理可以反映在计算机可读存储介质上的计算机程序产品中,该可读存储介质预装有计算机可读程序代码。任何有形的、非暂时性的计算机可读存储介质皆可被使用,包括磁存储设备(硬盘、软盘等)、光学存储设备(CD-ROM、DVD、 Blu Ray盘等)、闪存和/或诸如此类。这些计算机程序指令可被加载到通用计算机、专用计算机或其他可编程数据处理设备上以形成机器,使得这些在计算机上或其他可编程数据处理装置上执行的指令可以生成实现指定的功能的装置。这些计算机程序指令也可以存储在计算机可读存储器中,该计算机可读存储器可以指示计算机或其他可编程数据处理设备以特定的方式运行,这样存储在计算机可读存储器中的指令就可以形成一件制造品,包括实现指定功能的实现装置。计算机程序指令也可以加载到计算机或其他可编程数据处理设备上,从而在计算机或其他可编程设备上执行一系列操作步骤以产生一个计算机实现的进程,使得在计算机或其他可编程设备上执行的指令可以提供用于实现指定功能的步骤。
虽然在各种实施例中已经示出了本文的原理,但是许多特别适用于特定环境和操作要求的结构、布置、比例、元件、材料和部件的修改可以在不脱离本披露的原则和范围内使用。以上修改和其他改变或修正将被包含在本文的范围之内。
前述具体说明已参照各种事实例进行了描述。然而,本领域技术人员将认识到,可以在不脱离本披露的范围的情况下进行各种修正和改变。因此,对于本披露的考虑将是说明性的而非限制性的意义上的,并且所有这些修改都将被包含在其范围内。同样,有关于各种实施例的优点、其他优点和问题的解决方案已如上所述。然而,益处、优点、问题的解决方案以及任何能产生这些的要素,或使其变的更明确的解决方案都不应被解释为关键的、必需的或必要的。本文中所用的术语“包括”和任何其他变体,皆属于非排他性包含,这样包括要素列表的过程、方法、文章或设备不仅包括这些要素,还包括未明确列出的或不属于该过程、方法、系统、文章或设备的其他要素。此外,本文中所使用的术语“耦合”和其任何其他变体都是指物理连接、电连接、磁连接、光连接、通信连接、功能连接和/或任何其他连接。
具有本领域技术的人将认识到,在不脱离本发明的基本原理的情况下,可以对上述实施例的细节进行许多改变。因此,本发明的范围应根据以下权利要求确定。
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- 一种膈肌的超声测量方法,其特征在于,包括:激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;根据所述第一超声波的回波信号,获得所述受测者组织的图像;根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;在受测者组织的图像中自动获取所述受测者的膈肌区域的目标M线;基于所述目标M线,获得在第一预定时间段内沿所述目标M线的M图像;基于所述目标M线的M图像,确定所述受测者的膈肌区域的测量参数;其中,受测者组织包括膈肌。
- 如权利要求1所述的测量方法,其特征在于,所述根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域,包括:根据膈肌的图像特征,基于模式识别法或机器学习法从受测者组织的图像中识别所述受测者的膈肌区域;或者检测操作者在受测者组织的图像中标识所述受测者的膈肌区域的操作,获取受测者组织的图像中的受测者的膈肌区域。
- 如权利要求1至2中任意一项所述的测量方法,其特征在于:所述目标M线为与所述受测者的膈肌区域的夹角满足第一预设条件的M线。
- 如权利要求1至2中任意一项所述的测量方法,其特征在于:所述目标M线为与所述受测者的膈肌区域的夹角满足第一预设条件的解剖M线。
- 如权利要求3或4所述的测量方法,其特征在于,所述第一预设条件为所述夹角为60度至90度之间。
- 如权利要求1、2、4或5中任意一项所述的测量方法,其特征在于:所述目标M线为经过所述受测者的膈肌区域的指定区域的解剖M线。
- 如权利要求1至6中任意一项所述的测量方法,其特征在于,所述基于所述目标M线,获得沿所述目标M线的M图像,包括:基于所述目标M线,激励所述超声探头向所述目标M线所在的受测 者组织区域发射第二超声波,并接收返回的所述第二超声波的回波,获得所述第二超声波的回波信号;根据所述第二超声波的回波信号,获得沿所述目标M线的M图像。
- 如权利要求1至7中任意一项所述的测量方法,其特征在于,所述基于所述目标M线的M图像,获取所述受测者的膈肌区域的测量参数,包括:根据膈肌的图像特征,在所述目标M线的M图像中识别所述受测者的M图膈肌区域;根据所述M图膈肌区域获得所述受测者的膈肌区域的测量参数。
- 如权利要求1所述的测量方法,其特征在于,所述受测者处于呼吸设备的待使用状态中,所述方法还包括:基于确定的受测者的膈肌区域的所述测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求1至9中任意一项所述的测量方法,其特征在于,所述膈肌区域的测量参数包括膈肌的运动幅度、膈肌的运动速度、膈肌的厚度、膈肌的增厚率和膈肌的应变率中至少一种。
- 如权利要求8所述的测量方法,其特征在于,所述测量参数为运动幅度,根据所述M图膈肌区域获得所述受测者的膈肌区域的测量参数包括:根据识别出的所述M图膈肌区域,确定所述M图膈肌区域在所述M图像中的极高位置和极低位置;根据确定出的所述M图膈肌区域在所述M图像中的极高位置和极低位置,确定所述受测者的膈肌区域的运动幅度。
- 如权利要求11所述的测量方法,其特征在于,还包括:根据所述目标M线的位置在所述受测者组织的图像中确定与所述M图膈肌区域对应的区域,以获得M图膈肌区域对应区域;在所述M图膈肌区域对应区域上显示第一类型标识,并动态地更新所述第一类型标识的位置以描述所述M图膈肌区域对应区域的运动轨迹。
- 如权利要求12所述的测量方法,其特征在于,所述第一类型标识的方向表示所述M图膈肌区域对应区域的运动方向。
- 如权利要求12或13所述的测量方法,其特征在于,所述第一 类型标识的长度表示所述M图膈肌区域对应区域的运动幅度。
- 如权利要求12至14中任意一项所述的测量方法,其特征在于:所述目标M线包括多条目标M线;所述M图膈肌区域包括多个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;根据所述目标M线获得的M图膈肌区域对应区域包括多个M图膈肌区域对应区域,其中每个M图膈肌区域对应区域与一个M图膈肌区域相对应;所述第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个M图膈肌区域相对应;其中所述多个第一类型标识用不同的颜色显示。
- 如权利要求12所述的测量方法,其特征在于,还包括:获取所述M图膈肌区域的运动幅度随时间变化的趋势图;显示所述趋势图。
- 如权利要求15所述的测量方法,其特征在于,还包括:获取每个M图膈肌区域的运动幅度随时间变化的趋势图,获得多个趋势图;用不同的颜色显示所述多个趋势图;其中所述多个M图膈肌区域中的任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第一类型标识的颜色相同或者相互关联。
- 如权利要求8所述的测量方法,其特征在于,所述测量参数为厚度或增厚率,所述M图膈肌区域包括识别出的上边缘区域和下边缘区域,根据所述M图膈肌区域获得所述受测者的膈肌区域的测量参数包括:确定所述M图膈肌区域识别出的上边缘区域和下边缘区域之间的距离的极大值和极小值;根据所述极大值和极小值,确定所述受测者的膈肌区域的厚度或增厚率。
- 如权利要求18所述的测量方法,其特征在于,还包括:根据所述目标M线的位置在所述受测者组织的图像中确定所述M图膈肌区域的上边缘区域和下边缘区域对应的区域,以获得M图膈肌边缘区域对应区域;在所述M图膈肌边缘区域对应区域上显示第二类型标识,并动态地更新所述第二类型标识的位置以描述所述M图膈肌边缘区域对应区域的运动轨迹。
- 如权利要求19所述的测量方法,其特征在于:所述目标M线包括多条目标M线;所述M图膈肌区域包括多个M图膈肌区域,其中每个M图膈肌区域对应一条目标M线;根据所述目标M线获得的M图膈肌边缘区域对应区域包括多个M图膈肌边缘区域对应区域,其中每个M图膈肌边缘区域对应区域与一个M图膈肌区域相对应,并且每个M图膈肌边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;所述第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个M图膈肌区域相对应;其中所述多个第二类型标识用不同的颜色显示。
- 如权利要求19所述的测量方法,其特征在于,还包括:获取所述M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图;显示所述趋势图。
- 如权利要求20所述的测量方法,其特征在于,还包括:获取每个M图膈肌区域的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;用不同的颜色显示所述多个趋势图;其中多个M图膈肌区域中任意一个M图膈肌区域所对应的趋势图和所述任意一个M图膈肌区域所对应的第二类型标识的颜色相同或者相互关联。
- 如权利要求9中所述的测量方法,所述测量参数为运动幅度,其特征在于,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:比较所述运动幅度和第一阈值;当所述运动幅度小于或等于第一阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述运动幅度大于第一阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
- 如权利要求1中所述的测量方法,所述测量参数为运动幅度,其特征在于,所述方法还包括:获取所述受测者的预设生理信号;将所述运动幅度和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求1中所述的测量方法,所述测量参数为运动幅度,其特征在于,所述方法还包括:获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;将所述运动幅度和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求9中所述的测量方法,所述测量参数为增厚率,其特征在于,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:比较所述增厚率和第二阈值,当所述增厚率小于或等于第二阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述增厚率大于第二阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
- 如权利要求1中所述的测量方法,所述测量参数为增厚率,其特征在于,所述方法还包括:获取所述受测者的预设生理信号;将所述增厚率和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求1中所述的测量方法,所述测量参数为增厚率,其特征在于,所述方法还包括:获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;将所述增厚率和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求25或28中所述的测量方法,其特征在于,所述预设组织包括心脏组织,所述预设测量指标包括以下至少一种:左心室射血分数、舒张功能指标、心排量、左心室流出道速度时间积分VTI和下腔 静脉IVC参数;或者所述预设组织包括肺部组织,所述预设测量指标包括B线数量或肺超评分。
- 如权利要求24或27所述的测量方法,其特征在于,所述预设生理信号包括以下至少一种:呼吸频率、呼吸音量、自主呼吸潮气量、心率、氧饱和度、动脉血气指标、血压、收缩压、血色素、体温、昏迷指数和代谢指数。
- 一种膈肌的超声测量方法,其特征在于,包括:激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;根据所述第一超声波的回波信号,获得所述第一超声图像;根据膈肌的图像特征,从所述第一超声图像中识别所述受测者的膈肌区域;在所述第一超声图像中的受测者的膈肌区域中选取目标区域;激励超声探头按照多普勒模式向受测者组织发射第二超声波,并接收由受测者组织返回的所述第二超声波的回波,获得所述第二超声波的回波信号;根据所述第二超声波的回波信号,获得所述目标区域的多普勒图像;基于所述目标区域的多普勒图像,确定所述受测者的膈肌区域的运动速度;其中,受测者组织包括膈肌。
- 一种膈肌的超声测量方法,其特征在于,包括:激励超声探头向受测者组织发射第一超声波,并接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;根据所述第一超声波的回波信号,获得受测者组织的图像;根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;在受测者组织的图像中获取所述受测者的膈肌区域的目标M线;基于所述目标M线,获得在第二预定时间段内沿所述目标M线的M图像;基于所述目标M线的M图像,获取所述受测者的膈肌区域的测量参 数;其中,受测者组织包括膈肌。
- 一种膈肌的超声测量方法,其特征在于,包括:激励超声探头向受测者组织发射超声波,并接收由受测者组织返回的所述超声波的回波,获得所述超声波的回波信号;根据所述超声波的回波信号,获得所述受测者组织的图像,所述受测者组织的图像包括多帧图像;根据膈肌的图像特征,从所述多帧图像中的第一图像中识别所述受测者的膈肌区域;在所述第一图像中的受测者的膈肌区域中选取跟踪区域;在所述多帧图像中的其余图像中搜索与所述第一图像的跟踪区域相对应的匹配区域;根据所述跟踪区域和所述匹配区域获取所述跟踪区域在第三预定时间段内的运动轨迹;基于所述运动轨迹,确定所述受测者的膈肌区域的测量参数;其中,受测者组织包括膈肌。
- 如权利要求33所述的测量方法,其特征在于,所述根据膈肌的图像特征,从所述多帧图像中的第一图像中识别所述受测者的膈肌区域,包括:根据膈肌的图像特征,基于模式识别法或机器学习法从所述多帧图像中的第一图像中识别所述受测者的膈肌区域;或者检测操作者在所述多帧图像中的第一图像中标识所述受测者的膈肌区域的操作,获取所述受测者的膈肌区域。
- 如权利要求33所述的测量方法,其特征在于,在所述第一图像中的受测者的膈肌区域中选取跟踪区域,包括:在所述第一图像中的受测者的膈肌区域中随机选取跟踪区域;或者在所述第一图像中的受测者的膈肌区域中选取间膈距离相等的至少三个跟踪区域。
- 如权利要求33所述的测量方法,其特征在于,还包括:基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求33至36中任意一项所述的测量方法,其特征在于, 所述膈肌区域的测量参数包括膈肌的运动幅度、膈肌的运动速度、膈肌的厚度、膈肌的增厚率和膈肌的应变率中至少一种。
- 如权利要求33所述的测量方法,其特征在于,所述测量参数为运动幅度,其中基于所述运动轨迹确定所述受测者的膈肌区域的测量参数包括:获取所述运动轨迹在所述第三预定时间段内的极高位置和极低位置;根据所述极高位置和极低位置,确定所述受测者的膈肌区域的运动幅度。
- 如权利要求38所述的测量方法,其特征在于,还包括:在所述跟踪区域上显示第一类型标识,并动态地更新所述第一类型标识的位置以描述所述跟踪区域的运动轨迹。
- 如权利要求39所述的测量方法,其特征在于,所述第一类型标识的方向表示所述跟踪区域的运动方向。
- 如权利要求39或40所述的测量方法,其特征在于,所述第一类型标识的标识长度表示所述跟踪区域的运动幅度。
- 如权利要求39至41中任意一项所述的测量方法,其特征在于,所述跟踪区域包括多个跟踪区域;所述第一类型标识包括多个第一类型标识,其中每个第一类型标识与一个跟踪区域相对应;其中所述多个第一类型标识用不同的颜色显示。
- 如权利要求39所述的测量方法,其特征在于,还包括:获取所述跟踪区域的运动幅度随时间变化的趋势图;显示所述趋势图。
- 如权利要求42所述的测量方法,其特征在于,还包括:获取每个跟踪区域的运动幅度随时时间变化的趋势图,获得多个趋势图;用不同的颜色显示所述多个趋势图;其中所述多个跟踪区域中的任意一个跟踪区域所对应的趋势图和所述任意一个跟踪区域所对应的第一类型标识的颜色相同或者相互关联。
- 如权利要求33所述的测量方法,其特征在于,所述测量参数为厚度或增厚率,所述运动轨迹包括获取的上边缘区域和下边缘区域,其 中基于所述运动轨迹确定所述受测者的膈肌区域的测量参数包括:确定所述运动轨迹识别出的上边缘区域和下边缘区域之间的距离的极大值和极小值;根据所述极大值和极小值,确定所述受测者膈肌区域的厚度或增厚率。
- 如权利要求45所述的测量方法,其特征在于,还包括:根据所述跟踪区域的位置在所述受测者组织的图像中确定所述运动轨迹的上边缘区域和下边缘区域对应的区域,以获得运动轨迹边缘区域对应区域;在所述运动轨迹边缘区域对应区域上显示第二类型标识,并动态地更新所述第二类型标识的位置以描述所述运动轨迹边缘区域对应区域的运动轨迹。
- 如权利要求46所述的测量方法,其特征在于,所述跟踪区域包括多个跟踪区域;所述运动轨迹包括多个运动轨迹,其中每个运动轨迹对应一个跟踪区域;根据所述跟踪区域获得的运动轨迹边缘区域对应区域包括多个运动轨迹边缘区域对应区域,其中每个运动轨迹边缘区域对应区域与一个运动轨迹相对应,并且每个运动轨迹边缘区域对应区域包括上边缘区域对应区域和下边缘区域对应区域;所述第二类型标识包括多个第二类型标识,其中每个第二类型标识与一个运动轨迹相对应;其中所述多个第二类型标识用不同的颜色显示。
- 如权利要求45所述的测量方法,其特征在于,还包括:获取所述运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图;显示所述趋势图。
- 如权利要求47所述的测量方法,其特征在于,还包括:获取每个运动轨迹的上边缘区域和下边缘区域之间的距离随时间变化的趋势图,获得多个趋势图;用不同的颜色显示所述多个趋势图;其中多个运动轨迹中任意一个运动轨迹所对应的趋势图与所述任意 一个运动轨迹所对应的第二类型标识的颜色相同或者相互关联。
- 如权利要求36中所述的测量方法,所述测量参数为运动幅度,其特征在于,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:比较所述运动幅度和第一阈值;当所述运动幅度小于或等于第一阈值时,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者,当所述运动幅度大于第一阈值,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
- 如权利要求33中所述的测量方法,所述测量参数为运动幅度,其特征在于,所述方法还包括:获取所述受测者的预设生理信号;将所述运动幅度和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求33中所述的测量方法,所述测量参数为运动幅度,其特征在于,所述方法还包括:获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;将所述运动幅度和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求36中所述的测量方法,所述测量参数为增厚率,其特征在于,基于所述确定的受测者的膈肌区域的测量参数,输出提示信息,包括:比较所述增厚率和第二阈值;当所述增厚率小于或等于第二阈值,则输出提示操作者所述受测者需要继续使用呼吸设备的信息,或者当所述增厚率大于第二阈值时,则输出提示操作者能够撤掉所述受测者的呼吸设备的信息。
- 如权利要求33中所述的测量方法,所述测量参数为增厚率,其特征在于,所述方法还包括:获取所述受测者的预设生理信号;将所述增厚率和所述受测者的预设生理信号进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求33中所述的测量方法,所述测量参数为增厚率,其 特征在于,所述方法还包括:获取所述受测者的预设组织的超声图像,从所述预设组织的超声图像中获取预设测量指标;将所述增厚率和所述受测者的预设测量指标进行综合分析,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 如权利要求52或55中所述的测量方法,其特征在于,所述预设组织包括心脏组织,所述预设测量指标包括以下至少一种:左心室射血分数、舒张功能指标、心排量、左心室流出道速度时间积分VTI和下腔静脉IVC参数;或者所述预设组织包括肺部组织,所述预设测量指标包括B线数量或肺超评分。
- 如权利要求51或54所述的测量方法,其特征在在于,所述预设生理参数包括以下至少一种:呼吸频率、呼吸音量、自主呼吸潮气量、心率、氧饱和度、动脉血气指标、血压、收缩压、血色素、体温、昏迷指数和代谢指数。
- 一种膈肌的超声测量方法,其特征在于,包括:激励超声探头向受测者组织发射超声波,并接收由受测者组织返回的超声波的回波,获得所述超声波的回波信号;根据所述超声波的回波信号,获得受测者组织的图像;根据膈肌的图像特征,从受测者组织的图像中识别所述受测者的膈肌区域;获取所述受测者的膈肌区域中的目标区域在第四预定时间段内的运动信息;基于所述运动信息,获得所述受测者的膈肌区域的测量参数;其中,受测者组织包括膈肌。
- 如权利要求58所述的测量方法,其特征在于,所述运动信息包括以下至少一种:运动幅度、运动速度、厚度、增厚率和应变率。
- 如权利要求58所述的测量方法,其特征在于,所述受测者处于呼吸设备的待使用状态中,所述方法还包括:基于确定的受测者的膈肌区域的所述测量参数,输出提示信息,用以提示操作者是否撤掉所述受测者的呼吸设备。
- 一种膈肌的超声测量系统,其特征在于,包括:超声探头;发射电路,用于激励所述超声探头向受测者组织发射第一超声波;接收电路,用于接收由受测者组织返回的所述第一超声波的回波,获得所述第一超声波的回波信号;处理器,用于执行如权利要求1至32中任意一项所述测量方法。
- 一种膈肌的超声测量系统,其特征在于,包括:超声探头;发射电路,用于激励所述超声探头向受测者组织发射超声波;接收电路,用于接收由受测者组织返回的所述超声波的回波,获得所述超声波的回波信号;处理器,用于执行如权利要求33至60中任意一项所述测量方法。
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| CN117789331A (zh) * | 2023-12-13 | 2024-03-29 | 阿维塔科技(重庆)有限公司 | 车辆信号的回放方法、装置及存储介质 |
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| US20260047827A1 (en) | 2026-02-19 |
| CN116096299B (zh) | 2025-09-09 |
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