WO2021042298A1 - 一种vti测量装置及方法 - Google Patents
一种vti测量装置及方法 Download PDFInfo
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- WO2021042298A1 WO2021042298A1 PCT/CN2019/104416 CN2019104416W WO2021042298A1 WO 2021042298 A1 WO2021042298 A1 WO 2021042298A1 CN 2019104416 W CN2019104416 W CN 2019104416W WO 2021042298 A1 WO2021042298 A1 WO 2021042298A1
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- ultrasonic
- ultrasonic wave
- doppler
- vti
- echo signal
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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
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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
- A61B8/06—Measuring blood flow
Definitions
- the invention relates to a medical device, in particular to a measuring device and method for measuring the pumping distance of each heart beat by ultrasound.
- Cardiac output is one of the indicators for evaluating the pumping function of the heart, which corresponds to the amount of blood pumped by the heart in a period of time (for example, one minute).
- cardiac output is difficult to directly reflect the patient's condition, in the clinical scene of heart disease, cardiac output can usually be combined with information such as electrocardiogram and blood pressure to grasp the patient's condition.
- Doctors in the intensive care unit/coronary care unit also usually use CO to monitor the response of the heart after medication to determine the effect of the drug on the heart. Therefore, the accurate detection of the patient's cardiac output is clinically important.
- Cardiac output (CO) stroke volume (SV) ⁇ heart rate (HR)
- the stroke volume (SV) is calculated using the following formula:
- Stroke output (SV) valve cross-sectional area (CSA) ⁇ pumping distance per stroke
- the valve cross-sectional area CSA is calculated using the diameter of the aortic outflow tract.
- the present invention mainly provides a VTI measuring device and method for improving the accuracy of cardiac output assessment.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the tested tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the measured tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the measured tissue through the receiving circuit to obtain the ultrasonic echo of the first ultrasonic wave Signal, obtaining hemodynamic information according to the ultrasonic echo signal of the first ultrasonic wave, and obtaining a target sampling position according to the hemodynamic information, where the target sampling position refers to a position where hemodynamic information is least disturbed; the processor It is also used to control the ultrasonic probe to transmit a second ultrasonic wave to the tested tissue in a Doppler mode through the transmitting circuit, and to receive the echo of the second ultrasonic wave returned by the tested tissue through the receiving circuit to obtain the second ultrasonic wave.
- the ultrasonic signal generates the Doppler spectrogram at the target sampling position according to the ultrasonic echo signal of the second ultrasonic wave, and obtains the Doppler spectrum envelope of the Doppler spectrogram according to the Doppler spectrogram, and Calculate the blood flow velocity time integral VTI at the target sampling position according to the Doppler spectrum envelope;
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the measured tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the tested tissue through the receiving circuit to obtain the ultrasonic wave of the first ultrasonic wave.
- the echo signal generates an ultrasound image based on the ultrasound echo signal of the first ultrasound, the ultrasound image includes a B image and/or a blood flow image, and a target sampling location is marked on the ultrasound image, and the target sampling location is an ultrasound image The position where the hemodynamic information is the least interfered; the processor is also used to control the ultrasound probe to transmit a second ultrasonic wave to the tested tissue according to the Doppler mode through the transmitting circuit, and to receive the second ultrasonic wave through the receiving circuit.
- the echo of the second ultrasonic wave returned by the tissue, the ultrasonic echo signal of the second ultrasonic wave is obtained, the Doppler spectrogram at the target sampling position is obtained according to the ultrasonic echo of the second ultrasonic wave, and the Doppler spectrogram is obtained according to the Doppler spectrogram
- the Doppler spectrum envelope of the Doppler spectrogram, and the velocity time integral VTI of the blood flow at the target sampling position is calculated according to the Doppler spectrum envelope;
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the measured tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is used to control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the tested tissue through the receiving circuit, to obtain the ultrasonic echo of the first ultrasonic wave.
- Wave signal obtain blood flow image data according to the ultrasound echo signal of the first ultrasound, obtain the target sampling position according to the blood flow image data, and obtain the multiplicity of the target sampling position according to the ultrasound echo signal of the first ultrasound.
- the Doppler spectrogram, the Doppler spectrum envelope of the Doppler spectrogram is obtained according to the Doppler spectrogram, and the velocity time integral VTI of the blood flow at the target sampling position is calculated according to the Doppler spectrum envelope. ;
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the measured tissue, and obtain the ultrasonic echo signal output by the ultrasonic probe;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the measured tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the measured tissue through the receiving circuit to obtain the ultrasonic echo of the first ultrasonic wave Signal, obtaining hemodynamic information according to the ultrasonic echo signal of the first ultrasonic wave, and obtaining a target sampling position according to the hemodynamic information, where the target sampling position refers to a position where hemodynamic information is least disturbed; the processor Obtain the Doppler spectrogram at the target sampling position, obtain the Doppler spectrum envelope of the Doppler spectrogram according to the Doppler spectrogram, and calculate the blood at the target sampling position according to the Doppler spectrum envelope.
- the velocity time integral VTI of the flow
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the tested tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the tested tissue through the receiving circuit to obtain the ultrasonic wave of the first ultrasonic wave.
- the echo signal obtains hemodynamic information according to the ultrasonic echo signal of the first ultrasonic wave, and obtains a target sampling position according to the hemodynamic information, and the target sampling position means that the hemodynamic information is disturbed and satisfies a first preset condition
- the processor is also used to control the ultrasound probe to transmit a second ultrasonic wave to the measured tissue in a Doppler mode through the transmitting circuit, and to receive the second ultrasonic wave returned by the measured tissue through the receiving circuit Obtain the ultrasonic echo signal of the second ultrasonic wave, generate the Doppler spectrogram at the target sampling position according to the ultrasonic echo signal of the second ultrasonic wave, and obtain the Doppler spectrogram according to the Doppler spectrogram The Doppler spectrum envelope of the Le spectrogram, and calculating the velocity time integral VTI of the blood flow at the target sampling position according to the Doppler spectrum envelope;
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the tested tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the tested tissue through the receiving circuit to obtain the ultrasonic wave of the first ultrasonic wave.
- An echo signal an ultrasound image is generated according to the ultrasound echo signal of the first ultrasound, the ultrasound image includes a B image and/or a blood flow image, a target sampling position is marked on the ultrasound image, and the target sampling position is The position where the hemodynamic information in the ultrasound image is interfered with and meets the first preset condition;
- the processor is further configured to control the ultrasound probe to emit a second ultrasound to the tissue under test in a Doppler mode through the transmission circuit , And receive the echo of the second ultrasonic wave returned by the tested tissue through the receiving circuit, obtain the ultrasonic echo signal of the second ultrasonic wave, and obtain the Doppler at the target sampling position according to the ultrasonic echo signal of the second ultrasonic wave Spectrogram, obtain the Doppler spectrum envelope of the Doppler spectrogram according to the Doppler spectrogram, and calculate the velocity time of the blood flow at the target sampling position according to the Doppler spectrum envelope Points VTI;
- the output device is used to output VTI.
- a VTI measurement device including:
- Ultrasound probe used to transmit ultrasonic waves to the measured tissue and receive the echo of the ultrasonic waves returned by the measured tissue;
- a transmitting circuit for outputting a corresponding transmitting sequence to the ultrasonic probe according to a set mode, so as to control the ultrasonic probe to transmit corresponding ultrasonic waves;
- the receiving circuit is used to control the ultrasonic probe to receive the echo of the ultrasonic wave returned by the tested tissue to obtain the ultrasonic echo signal;
- Beam synthesis module used for beam synthesis of ultrasonic echo signals
- the processor is configured to control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and to receive the echo of the first ultrasonic wave returned by the tested tissue through the receiving circuit to obtain the ultrasonic wave of the first ultrasonic wave.
- the echo signal obtains hemodynamic information according to the ultrasonic echo signal of the first ultrasonic wave, and obtains a target sampling position according to the hemodynamic information, and the target sampling position means that the hemodynamic information is disturbed and satisfies a first preset condition
- the processor also obtains the Doppler spectrogram at the target sampling position, obtains the Doppler spectrum envelope of the Doppler spectrogram according to the Doppler spectrogram, and according to the Doppler spectrogram Le spectrum envelope calculation of the velocity time integral VTI of the blood flow at the target sampling position;
- the output device is used to output VTI.
- a VTI measurement method including:
- a VTI measurement method including:
- the ultrasound image including a B image and/or a blood flow image
- a VTI measurement method including:
- the ultrasonic echo signal of the first ultrasonic wave collects an ultrasonic wave transmitted from the ultrasonic probe to the measured tissue and receives the first ultrasonic wave returned by the measured tissue. The echo is obtained;
- the velocity time integral VTI of the blood flow at the target sampling position is calculated based on the Doppler spectrum envelope.
- a VTI measurement method including:
- a VTI measurement method including:
- the target Doppler spectrogram obtain the Doppler spectrum envelope of the target Doppler spectrogram
- a VTI measurement method including:
- the target Doppler spectrogram obtain the Doppler spectrum envelope of the target Doppler spectrogram
- a VTI measurement method which includes:
- the target Doppler spectrogram obtain the Doppler spectrum envelope of the target Doppler spectrogram
- a VTI measurement method including:
- the target Doppler spectrogram obtain the Doppler spectrum envelope of the target Doppler spectrogram
- a VTI measurement method including:
- the ultrasound image including a B image and/or a blood flow image
- target sampling position is a position in the ultrasound image where hemodynamic information is disturbed and satisfies the first preset condition
- a computer-readable storage medium which includes a program, and the program can be executed by a processor to implement the above-mentioned method.
- a method for evaluating the pumping function of the heart is provided, and the pumping function of the heart is evaluated by using the above-mentioned device or the VTI obtained by the above-mentioned method.
- the VTI is the VTI at the position where the hemodynamic information in the left ventricular outflow tract is the least disturbed, that is, the VTI is the least affected by the friction of the blood vessel wall and can best reflect the heart's pumping ability. It best reflects cardiac output.
- Figure 1 is a schematic diagram of the structure of an ultrasonic diagnostic equipment
- Figure 2 is a flow chart of measuring VTI in the first embodiment
- Figure 3 is a schematic diagram of a B image in an embodiment
- Figure 4 is a Doppler spectrum diagram at a sampling position in an embodiment
- FIG. 5 is a flowchart of measuring VTI in various embodiments
- FIG. 6 is a flowchart of measuring VTI in various embodiments
- Fig. 7 is a flow chart of measuring VTI in an embodiment.
- connection and “connection” mentioned in this application include direct and indirect connection (connection) unless otherwise specified.
- the five chambers of the heart were scanned by ultrasound, and the cardiac output CO was obtained according to the valve cross-sectional area of the left ventricular outflow tract and the movement distance of red blood cells during a systolic period.
- the inventor realized that the aortic valve annulus is fibrous.
- the left ventricular outflow tract is unlikely to change in a short period of time.
- the relative change in cardiac output CO is mainly affected by the pumping distance per stroke. Therefore, the relative change of cardiac output CO can be estimated by the relative change of the pumping distance per stroke, and the measurement of the pumping distance per stroke is less prone to errors.
- the pumping distance per stroke is generally calculated by using a Doppler spectrum image at a certain position on the cross-sectional area of the left ventricular outflow tract valve, specifically the velocity time integral (VTI) of the Doppler spectrum envelope. Therefore, the present invention proposes to use the pumping distance per stroke to reflect the heart pumping function, and when the pumping distance per stroke is calculated, the visualized velocity time integral VTI is output to the user.
- VTI velocity time integral
- VTI can be calculated from the Doppler spectrum envelope of an ultrasonic receiving point in the measured tissue. If the most suitable sampling location can be found, and the VTI can be calculated based on the Doppler spectrum envelope at the sampling location, the result is VTI will be more accurate, which is more conducive to the accurate evaluation of the heart pumping function.
- the appropriate sampling location (referred to as the "target sampling location" in this article) based on the hemodynamic information, and the person who interferes with the hemodynamic information at the sampling location If the first predetermined condition is satisfied (for example, the interference is minimal, the interference is less than a certain threshold, the interference is within a certain range, etc.), the VTI calculated by using the Doppler spectrum envelope of the sampling position will be more accurate.
- the hemodynamic information can be blood flow velocity information and/or energy information, or Doppler spectrum information, which can be obtained from blood flow image data.
- only one mode can be used to transmit ultrasound to the measured tissue (such as the five chambers of the heart) to obtain hemodynamic information and Doppler spectrum data used to calculate VTI, or multiple modes can be used successively Transmit ultrasound to the tested tissue to obtain hemodynamic information and Doppler spectrum data used to calculate VTI.
- an ultrasonic diagnostic equipment 100 is provided.
- the ultrasonic diagnostic equipment 100 includes an ultrasonic probe 110, a transmitting circuit 120, a receiving circuit 130, a beam combining module 140, and an IO solution.
- the ultrasonic probe 110 includes a transducer (not shown in the figure) composed of a plurality of array elements arranged in an array.
- the plurality of array elements are arranged in a row to form a linear array, or arranged in a two-dimensional matrix to form a surface array.
- the array elements can also form a convex array.
- the array element is used to transmit an ultrasonic beam according to the excitation electrical signal, or to transform the received ultrasonic beam into an electrical signal. Therefore, each array element can be used to realize the mutual conversion of electric pulse signals and ultrasonic beams, so as to realize the transmission of ultrasonic waves to the target tissues to be detected (such as organs, tissues, blood vessels, fetuses, etc.) in the human body or animals.
- the echo of ultrasound reflected by the tissue When performing ultrasonic testing, you can control which array elements are used to transmit ultrasonic beams and which array elements are used to receive ultrasonic beams through the transmitting circuit and receiving circuit, or control the array elements to be used for transmitting ultrasonic beams or receiving ultrasonic beams in time slots. wave.
- the array elements participating in the ultrasonic transmission can be excited by electrical signals at the same time, thereby simultaneously emitting ultrasonic waves; or the array elements participating in the ultrasonic transmission can also be excited by several electrical signals with a certain time interval, so as to continuously emit ultrasonic waves with a certain time interval.
- the array element uses piezoelectric crystals to convert electrical signals into ultrasonic signals according to the transmission sequence transmitted by the transmitting circuit.
- the ultrasonic signals may include one or more scan pulses, one or more reference pulses, and one or more push pulses. And/or one or more Doppler pulses.
- the ultrasonic waves emitted by the ultrasonic probe may be focused waves, plane waves or divergent waves.
- the user selects the appropriate position and angle by moving the ultrasound probe 110 to transmit ultrasound to the tested tissue 190 and receive the echo of the ultrasound returned by the tested tissue 190, and output the ultrasound echo signal.
- the ultrasound echo signal is based on the receiving array element.
- the channel analog electrical signal formed by the channel carries amplitude information, frequency information and time information.
- the transmitting circuit 120 is used to generate a transmitting sequence according to the control of the processor.
- the transmitting sequence is used to control part or all of the multiple array elements to transmit ultrasonic waves to the target tissue.
- the parameters of the transmitting sequence include the position of the array element used for transmission, the number of array elements, and the ultrasonic wave. Beam emission parameters (e.g., amplitude, frequency, number of shots, interval of emission, angle of emission, waveform, focus position, etc.).
- Beam emission parameters e.g., amplitude, frequency, number of shots, interval of emission, angle of emission, waveform, focus position, etc.
- the transmitting circuit 120 is also used to phase delay the transmitted beams, so that different transmitting array elements emit ultrasonic waves at different times, so that each transmitted ultrasonic beam can be focused on a predetermined region of interest.
- the transmission sequence parameters may be different.
- Ultrasound is sent in different working modes, and the echo signal is received by the receiving circuit 130 and followed by After processing by the modules and corresponding algorithms, the ultrasound data in each working mode can be obtained.
- B images reflecting the anatomical structure of the tissues, C images reflecting the anatomical structure and blood flow information of the tissues, and Doppler images can be generated respectively.
- D image of Le spectrum image can be generated respectively.
- the receiving circuit 130 is used to receive ultrasonic echo signals from the ultrasonic probe and process the ultrasonic echo signals.
- the receiving circuit 130 may include one or more amplifiers, analog-to-digital converters (ADC), and the like.
- the amplifier is used to amplify the received echo signal after proper gain compensation.
- the amplifier is used to sample the analog echo signal at a predetermined time interval to convert it into a digitized signal.
- the digitized echo signal still retains its amplitude Information, frequency information and phase information.
- the data output by the receiving circuit 130 may be output to the beam combining module 140 for processing, or output to the memory 180 for storage.
- the beam synthesis module 140 is signal-connected to the receiving circuit 130, and is used to perform beam synthesis processing such as corresponding delay and weighted summation on the echo signal. Because the distance between the ultrasonic receiving point in the measured tissue and the receiving array element is different, therefore, The channel data of the same receiving point output by different receiving array elements have delay differences, and delay processing is required to align the phase, and perform weighted summation of the different channel data of the same receiving point to obtain the ultrasound image data after beam synthesis.
- the ultrasound image data output by the beam synthesis module 140 is also referred to as radio frequency data (RF data).
- the beam combining module 140 outputs the radio frequency data to the IQ demodulation module 150. In some embodiments, the beam combining module 140 may also output the radio frequency data to the memory 180 for buffering or storage, or directly output the radio frequency data to the processor 160 for image processing.
- the beam combining module 140 may perform the above functions in hardware, firmware, or software.
- the beam combining module 140 may include a central controller circuit (CPU) capable of processing input data according to specific logic instructions, one or more micro-processing chips, or Any other electronic components, when the beam combining module 140 is implemented in software, it can execute instructions stored on a tangible and non-transitory computer readable medium (for example, the memory 180) to perform beam combining using any appropriate beam combining method Calculation.
- CPU central controller circuit
- the IQ demodulation module 150 removes the signal carrier through IQ demodulation, extracts the organizational structure information contained in the signal, and performs filtering to remove noise.
- the signal obtained at this time is called a baseband signal (IQ data pair).
- the IQ demodulation module 150 outputs the IQ data pair to the processor 160 for image processing.
- the IQ demodulation module 150 also buffers and saves the IQ data output to the memory 180, so that the processor can read the data from the memory 180 for subsequent image processing.
- the IQ demodulation module 150 may also use hardware, firmware, or software to perform the above functions. In some embodiments, the IQ demodulation module 150 and the beam synthesis module 140 may also be integrated in a chip.
- the processor 160 is used to configure a central controller circuit (CPU), one or more microprocessors, a graphics controller circuit (GPU) or any other electronic components capable of processing input data according to specific logic instructions, which can be configured according to the input data Commands or predetermined commands perform control of peripheral electronic components, or perform data reading and/or saving to the memory 180, and input data can also be processed by executing a program in the memory, for example, the collected data can be processed according to one or more working modes.
- CPU central controller circuit
- microprocessors e.g., a graphics controller circuit (GPU) or any other electronic components capable of processing input data according to specific logic instructions, which can be configured according to the input data Commands or predetermined commands perform control of peripheral electronic components, or perform data reading and/or saving to the memory 180, and input data can also be processed by executing a program in the memory, for example, the collected data can be processed according to one or more working modes.
- GPU graphics controller circuit
- the ultrasound data performs one or more processing operations, including but not limited to adjusting or limiting the form of ultrasound emitted by the ultrasound probe 110, generating various image frames for subsequent display by the display 171, or adjusting or limiting the display on the display 171 Or adjust one or more image display settings displayed on the display 171 (for example, ultrasound images, interface components, locating regions of interest).
- the collected ultrasound data can be processed by the processor 160 in real time during scanning or treatment, or can be temporarily stored in the memory 180, and processed in a quasi real-time manner in online or offline operation.
- the processor 160 may include a control module 161, a grayscale imaging module 163, a blood flow velocity calculation module 162, a blood flow image module 164, a Doppler spectral image module 165, and a VTI calculation module 166.
- the processor 160 may further include other image processing modules, such as an elasticity detection module for detecting the elasticity of the tissue.
- the control module 161 is electrically connected to the transmitting circuit 120 and the receiving circuit 130 to control the operation of the transmitting circuit 120 and the receiving circuit 130, for example, controlling the transmitting circuit 120 and the receiving circuit 130 to work alternately or simultaneously.
- the control module can also determine a suitable working mode according to the user's selection or the setting of the program, form a transmission sequence corresponding to the current working mode, and send the transmission sequence to the transmission circuit 120, so that the transmission circuit 120 uses a suitable transmission sequence to control the ultrasound
- the probe 110 emits ultrasonic waves.
- the control module 161 successively controls the ultrasonic probe to transmit ultrasonic waves in two working modes according to the setting of the program, first controls the ultrasonic probe to transmit the first ultrasonic wave used to obtain hemodynamic information of the measured tissue, and receives Measure the echo of the first ultrasonic wave returned by the tissue. After obtaining the sampling position according to the hemodynamic information, the control module 161 controls the ultrasound probe to transmit the second ultrasonic wave to the measured tissue according to the Doppler mode, and receive the echo of the second ultrasonic wave returned by the measured tissue.
- the grayscale imaging module 163, the blood flow velocity calculation module 162, the blood flow image module 164, and the Doppler spectrum image module 165 constitute an image processing module.
- the grayscale imaging module 163 is used to process the ultrasound data to generate a grayscale image of signal strength changes in the scanning range.
- the grayscale image reflects the internal anatomical structure of the tissue and is called a B image.
- the grayscale imaging module 163 can output the B image to the output device 170, and the output device 170 outputs a visualized B image, for example, the output device 170 displays the B image or prints the B image.
- the grayscale imaging module 163 may also output the B image to the blood flow image module 164, and the B image and the blood flow information output by the blood flow velocity calculation module 162 together generate the blood flow image.
- the blood flow velocity calculation module 162 is used to process the ultrasound data to generate the blood flow signal within the scanning range, for example, directly use the speckle method to process the IQ data pair or the grayscale image generated by the grayscale imaging module 163 to calculate each point Blood flow information.
- the blood flow velocity calculation module 162 can also process the IQ data pair or the grayscale image generated by the grayscale imaging module 163 using a wall filter algorithm to suppress the echo signals of stationary tissues or tissues with a slower speed, and extract blood flow Ultrasonic echo signal, using autocorrelation algorithm to calculate the blood flow force information at each point on the ultrasonic echo signal of blood flow. Hemodynamic information includes blood flow velocity information and energy information.
- the blood flow velocity calculation module 162 outputs blood flow information to the blood flow image module 164 and the Doppler spectrum image module 165 respectively.
- the blood flow image module 164 is configured to superimpose the B image output by the grayscale imaging module 163 and the blood flow information output by the blood flow velocity calculation module 162 to generate a color blood flow image, which is also called a C image.
- the Doppler spectrum image module 165 is used to obtain Doppler spectrum images of each point according to the received ultrasonic echo signal.
- the Doppler spectrum image module 165 can output the Doppler spectrum image to the output device 170 for display or printing.
- the VTI calculation module 166 is used to obtain a Doppler envelope according to the Doppler spectrum image obtained by the Doppler spectrum image module 165, and calculate the blood flow velocity at a specific location according to the Doppler envelope. Time integral VTI.
- the VTI calculation module 166 is used to automatically identify the Doppler spectrogram at the position where the bleeding flow force information is least disturbed, and obtain the Doppler spectrum envelope based on the identified Doppler spectrogram.
- the Puller spectrum envelope calculates the velocity time integral of the blood flow at the position where the hemodynamic information is least disturbed.
- the memory 180 is used to store data or programs.
- the memory 180 may be used to store collected ultrasound data or image frames generated by the processor that are not displayed immediately.
- the image frames may be 2D or 3D images, or the memory 180 may Stores the graphical user interface, one or more default image display settings, and programming instructions for the processor, beamforming module or IQ decoding module.
- the memory 180 may be a tangible and non-transitory computer-readable medium, such as flash memory, RAM, ROM, EEPROM, and so on.
- the output device 170 is used to output various detection or diagnosis results, and the results can be visually presented to the doctor or the subject in the form of graphics, images, text, numbers, or charts.
- the output device 170 includes a display 171 and/or a printer 172.
- the ultrasonic diagnostic equipment 100 may also include an input device (not shown in the figure).
- the input device may be, for example, a keyboard, operation buttons, a mouse, a trackball, etc., or a touch screen integrated with a display. Control screen.
- the input module is a keyboard or operation button, the user can directly input operation information or operation instructions through the input module; when the input module is a mouse, trackball or touch screen, the user can connect the input module to the soft keys, Operation icons, menu options, etc. cooperate to complete the input of operation information or operation instructions.
- FIG. 2 Based on the ultrasonic diagnostic device 100 shown in FIG. 1, the process of measuring VTI is shown in FIG. 2, and includes the following steps:
- Step 10 The processor controls the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue through the transmitting circuit, and receives the echo of the first ultrasonic wave returned by the tested tissue.
- the measured tissue includes five chambers of the heart, and the first ultrasonic wave can be a focused wave, a plane wave, or a diverging wave.
- the first ultrasound adopts a full-screen multi-beam focused wave or plane wave to cover the tissue parts of the five chambers of the heart as much as possible.
- the user can position the ultrasound probe, align the transmitting array element of the ultrasound probe with the long axis of the tip of the heart to launch, scan the cut surface of the heart, and set the transmission parameters according to the B mode.
- Various tissue interfaces on the cut surface reflect or scatter at least part of the first ultrasonic wave to form a reflected echo.
- the ultrasonic probe receives the echo of the first ultrasonic wave and converts it into a corresponding electrical signal for output.
- the ultrasound acquisition settings of the ultrasound probe can be set or selected by the user using the input device.
- the user can define the gain, power, time gain compensation (TGC), resolution, etc. of the ultrasound probe by selecting one or more interface components of the GUI (Graphical User Interface) displayed on the display.
- GUI Graphic User Interface
- Step 11 Process the echo of the first ultrasonic wave.
- the echo of the first ultrasonic wave is sensed by the ultrasonic probe 110, and after the receiving circuit 130, the beam synthesis module 140, the IQ demodulation module 150 and each image processing module, the ultrasonic echo signal of the blood flow is extracted from the ultrasonic data, and the ultrasonic echo signal is calculated Hemodynamic information, which is used to subsequently determine the sampling location.
- data frames of B image or C image are also generated according to the echo of the first ultrasound.
- Each data frame includes multiple data sets, and each data set includes position coordinates.
- the pixel value, the position coordinate and the pixel in the display area of the B image or C image on the display screen form a one-to-one mapping relationship, and the pixel value represents the brightness and/or color of the pixel at the position.
- the pixel value can be a brightness value
- the pixel value can be a brightness value and a color value.
- the color value includes the value of the three colors of red, green and blue or the proportional relationship of the three.
- the data frame is output to the display for display, thereby displaying a visualized B image or C image on the display screen.
- a B image 300 generated based on the echo of the first ultrasonic wave.
- the tissue anatomy structure 301 of the five chambers of the heart is displayed on the B image 300.
- Step 12 Determine the region of interest.
- the marking frame 302 of interest can be manually marked at the position of the left ventricular outflow tract.
- the processor can form various chambers of the heart based on the change in pixel intensity. For example, a low-intensity pixel cluster represents the chamber 303, and the relatively high-intensity pixel cluster surrounding these low-intensity pixel clusters represents the diaphragm 304 Therefore, through the B image, the user (such as a doctor) can identify each chamber according to the characteristics of each chamber.
- the left ventricle is the larger of the chambers relative to the other chambers, so that the identification frame of interest 302 can be marked at the position of the left ventricular outflow tract, and the area enclosed by the identification frame 302 of interest is called the region of interest.
- the processor can automatically identify the left ventricle based on the echo data of the first ultrasound, for example, using a machine learning method for automatic identification, and automatically locate the region of interest based on the identified position of the left ventricular outflow tract , And then automatically mark the interest identification frame 302 on at least a part of the left ventricular outflow tract image, as shown in FIG. 3.
- the position and size of the interest identification frame 302 can be adjusted by the user operating an input device (such as a mouse or a touch screen), so that the size and position of the region of interest can also be adjusted.
- Step 13 Determine the target sampling location.
- the blood is pumped from the left ventricle through the contraction of the heart, and the blood will be rubbed by the blood vessel wall during the flow, which will reduce the flow rate.
- the blood closer to the blood vessel wall is more affected by the friction of the blood vessel wall, and the blood in the middle position is less affected by the blood vessel wall. Therefore, the present invention hopes to collect the blood in the middle part of the blood vessel wall as a sample for calculating the VTI.
- the processor extracts the bleeding flow force information according to the ultrasonic echo signal of the first ultrasound, and uses the position where the hemodynamic information is disturbed and satisfies the first preset condition as the target sampling position.
- the hemodynamic information includes position information, as well as blood flow velocity information and/or energy information.
- the phase of the hemodynamic information is It is the blood flow velocity and the model of the hemodynamic information is the energy information.
- the first preset condition may be that the interference is minimal, or that the interference is less than a certain threshold, or that the interference is within a certain range, and so on.
- the target sampling location can be determined according to the blood flow velocity information.
- the solution is to find the hemodynamic information with the highest blood flow velocity in the obtained hemodynamic information, and further obtain the blood flow.
- the position information of the hemodynamic information with the highest speed, and the position with the highest blood flow speed as the target sampling position.
- the target sampling location can be determined according to the blood flow velocity information, and the solution is to find the hemodynamic information with the largest average blood flow velocity in a certain period of time in the obtained hemodynamic information
- the position information of the hemodynamic information with the maximum average blood flow velocity can be obtained, and the position with the maximum average blood flow velocity is taken as the target sampling position.
- the target sampling location can be determined according to the blood flow velocity information.
- the solution is to find the blood flow velocity information with the maximum peak value within a certain period of time in the obtained hemodynamic information, and further obtain The position information of the dynamic information with the maximum peak blood flow velocity, and the position of the blood flow velocity with the maximum peak as the target sampling position.
- the target sampling location can be determined according to the blood flow velocity information.
- the solution is to find the blood flow velocity or the average blood flow velocity or the peak value of the blood flow velocity in the obtained hemodynamic information. Threshold conditions can meet clinical needs, for example, blood flow velocity is greater than 60% of maximum blood flow velocity, or average blood flow velocity is not less than 40cm/s, or the peak blood flow velocity is 30cm/s-40cm/s and so on.
- the target sampling position can be determined according to the energy information.
- the solution is to find the hemodynamic information with the largest energy information in the obtained hemodynamic information, and further obtain the hemodynamic information with the largest energy information.
- the position with the largest energy information is used as the target sampling position.
- the target sampling location can be determined according to the energy information.
- the solution is to find the hemodynamic information with the largest average energy information in a certain period of time in the obtained hemodynamic information, and further The position information of the hemodynamic information with the largest average energy information is obtained, and the position with the largest average energy information is taken as the target sampling position.
- the target sampling location can be determined according to the energy information.
- the solution is to find the energy information with the largest peak value within a certain period of time in the obtained hemodynamic information, and further obtain the largest peak energy information.
- the energy information position with the maximum peak value is used as the target sampling position.
- the target sampling location can be determined according to the energy information.
- the solution is to find the energy or average energy or the peak value of the energy information in the obtained hemodynamic information to meet a certain threshold condition to meet the clinical requirements. Demand, for example, the energy information is greater than 70% of the maximum energy information, and so on.
- the target sampling position can be determined based on the combination of blood flow velocity information and energy information.
- the solution is to first identify the blood flow information points whose energy information exceeds a set threshold, and combine these points Find the hemodynamic information with the maximum blood flow velocity or the blood flow velocity meeting certain conditions, and use the position with the maximum blood flow velocity or meeting certain conditions as the target sampling position.
- the Doppler spectrum at the target sampling position will be collected later, so the target sampling position is also referred to as a Doppler sampling gate.
- the position of the sampling gate 305 is marked on the B image 300.
- the processor extracts the bleeding flow force information according to the echo of the first ultrasound, and finds out the area of interest according to the area enclosed by the interest identification frame 302 Therefore, in a preferred embodiment, only the hemodynamic information of each point in the selected area in the identification box of interest is compared, and the hemodynamic information is selected. The position with the least interference is used as the target sampling position.
- step 12 can be omitted, that is, the interest identification box is not marked.
- the hemodynamic information of each point in the full-screen area will be compared, and the hemodynamic information will be selected. The largest position is used as the target sampling position.
- the target sampling location 305 can be marked on the B image or the C image as shown in FIG. 3 to provide the doctor or the subject with a more direct visual perception, or it may not be marked.
- Step 14 Transmit the second ultrasonic wave and receive the echo.
- the processor controls the transmitter circuit to switch to the Doppler mode, and controls the ultrasound probe to transmit the second ultrasonic wave to the measured tissue according to the Doppler mode.
- the transmission parameters of the second ultrasonic wave are set according to the Doppler mode. It can be pulse Doppler or continuous Doppler.
- the second ultrasonic wave can be a focused wave, a plane wave or a diverging wave.
- the scanning range of the second ultrasonic wave includes at least the target sampling position.
- the second ultrasonic wave may be emitted only to the target sampling position, and the Doppler data at the target sampling position can be obtained through processing.
- the second ultrasonic wave may also be emitted for the full screen or a larger range (for example, a region of interest) including the target sampling position.
- Step 15 Obtain the Doppler spectrogram at the target sampling position.
- the echo of the second ultrasonic wave returned by the tested tissue is an echo signal of a duration.
- the echo of the second ultrasonic wave is passed through the receiving circuit 130, the beam synthesizing module 140, the IQ demodulation module 150, and the velocity calculation module 162
- the ultrasound echo signal of the blood flow is extracted from the ultrasound data
- the Doppler spectrum imaging module 165 obtains the Doppler data according to the ultrasound echo signal of the blood flow
- the Doppler spectrogram 401 is obtained according to the Doppler data. As shown in Figure 4.
- the Doppler spectrum imaging module 165 can directly obtain the Doppler spectrogram 401 at the target sampling position.
- the Doppler spectrum imaging module 165 selects the blood flow ultrasonic echo at the target sampling position from the blood flow ultrasonic echo signals at many positions Signal, and then the Doppler spectrogram 401 at the target sampling position is obtained. Or, first obtain the Doppler spectrum images of many positions, and then select the Doppler spectrum images at the target sampling position from them.
- Step 16 Obtain the Doppler spectrum envelope at the target sampling position.
- the envelope 403 of the Doppler spectrum image is automatically traced according to the Doppler spectrum image at the target sampling position.
- the Doppler spectrogram 306 at the target sampling position can be displayed on or beside the B image or the C image, as shown in FIG. 3.
- Step 17 Calculate the velocity time integral (ie VTI).
- VTI represents the area 405 under the curve of the Doppler spectrum envelope 403, and the area 405 under the curve can be obtained by integrating the curve.
- a certain Doppler spectrum envelope 403 curve can be integrated to calculate the area under the Doppler spectrum envelope 403 curve to obtain the velocity time integral of the blood flow at the target sampling position VTI;
- VTI can also be calculated based on the Doppler spectrum envelope at the target sampling position in multiple cardiac cycles.
- the distance 407 between two adjacent envelopes represents a cardiac cycle. The areas under multiple envelopes are then averaged to obtain the average VTI for multiple cardiac cycles.
- Step 18 Output the velocity time integral VTI for the convenience of doctors to check.
- the VTI uses two ultrasonic transmissions, that is, the first ultrasonic wave is transmitted in the B mode or the C mode, the target sampling position is detected, and then the second ultrasonic wave is transmitted in the Doppler mode.
- Obtain the Doppler spectrogram of the target sampling position obtain the Doppler spectrum envelope of the target sampling position according to the Doppler spectrogram, and calculate the blood flow velocity time of the target sampling position according to the Doppler spectrum envelope of the target sampling position Points VTI.
- the Doppler spectrogram of the target sampling position can be obtained by one ultrasonic emission, and the VTI can be further calculated.
- the processing flow is shown in Fig. 5 and includes the following steps:
- Step 20 Control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue, and control the receiving circuit to receive the echo of the first ultrasonic wave returned from the tested tissue to obtain the ultrasonic echo signal of the first ultrasonic wave.
- the first ultrasonic wave can be a focused wave, a plane wave or a diverging wave.
- the first ultrasound adopts a full-screen multi-beam focused wave or plane wave to cover the tissue parts of the five chambers of the heart as much as possible.
- the first ultrasonic wave is reflected or scattered by the interface of the five chambers of the heart to form a reflected echo, and the echo signal of the first ultrasonic wave is obtained.
- Step 21 Obtain blood flow image data according to the echo signal of the first ultrasound.
- the echo of the first ultrasonic wave is sensed by the ultrasonic probe 110, and the blood flow image data is obtained through the receiving circuit 130, the beam synthesis module 140, the IQ demodulation module 150, and the velocity calculation module 162.
- Step 22 Obtain a Doppler spectrogram of the target sampling position according to the blood flow image data.
- the processor calculates the hemodynamic information of each point in the blood flow image according to the blood flow image data, and uses the point with the largest value of the hemodynamic information as the target sampling position, according to the echo signal of the first ultrasound. Obtain the Doppler spectrogram at the target sampling position.
- Step 23 Obtain the Doppler spectrum envelope of the target sampling position according to the Doppler spectrum diagram.
- Step 24 Calculate the velocity time integral VTI of the target sampling position according to the Doppler spectrogram. The calculation method is the same as step 17.
- Step 25 output VTI.
- the output mode can be displayed on the display interface or printed out by a printer.
- hemodynamic information may also be obtained according to the echo of the first ultrasonic wave, and the target sampling position may be obtained subsequently according to the hemodynamic information.
- the following steps are included.
- Step 30 Control the ultrasonic probe to transmit the first ultrasonic wave to the measured tissue, and receive the echo of the first ultrasonic wave returned by the measured tissue.
- Step 31 Obtain hemodynamic information according to the echo signal of the first ultrasonic wave.
- the echo of the first ultrasonic wave is sensed by the ultrasonic probe 110, and hemodynamic information is obtained through the receiving circuit 130, the beam synthesis module 140, the IQ demodulation module 150, and the velocity calculation module 162.
- Step 32 Obtain a Doppler spectrogram of the target sampling position according to the hemodynamic information.
- the processor searches for the position where the hemodynamic information is least disturbed, and uses the position where the hemodynamic information is least disturbed as the target sampling position.
- the Doppler spectrogram at the target sampling position can be obtained according to the echo signal of the first ultrasound; in one embodiment, the second ultrasound can be transmitted to the target sampling position according to the Doppler mode to obtain the second ultrasound. According to the ultrasonic echo signal of the second ultrasonic wave, the Doppler spectrogram at the target sampling position is obtained.
- Step 33 Obtain the Doppler spectrum envelope at the target sampling position according to the Doppler spectrum map.
- Step 34 Calculate the velocity time integral VTI at the target sampling position according to the Doppler spectrum envelope.
- Step 35 output VTI.
- the ultrasonic wave may be transmitted first to obtain the Doppler spectrogram in the preset area, the target Doppler spectrogram is determined according to the Doppler spectrogram, and the target Doppler spectrogram package is obtained according to the target Doppler spectrogram.
- Network to calculate VTI For example, as shown in Figure 7, it includes the following steps:
- Step 40 Control the ultrasonic probe to transmit the first ultrasonic wave to the tested tissue and receive the echo of the first ultrasonic wave returned by the tested tissue;
- Step 41 Calculate multiple Doppler spectrograms at different positions in the preset area of the first ultrasound according to the ultrasound echo signal of the first ultrasound; the preset area may be the entire scan area, which may be an ROI selected automatically or manually area. Among them, Doppler spectrograms of multiple locations or points in the preset area can be acquired at multiple locations, and Doppler spectrograms of all locations or points in the preset area can also be acquired. It should be understood that the “dot” mentioned here refers to a pixel point in the scanning area or a small area including several pixels, rather than a pure point in a mathematical sense.
- Step 42 Determine the target Doppler spectrogram based on the multiple Doppler spectrograms; the target Doppler spectrogram may be determined from the multiple Doppler spectrograms based on satisfying the second preset condition. For example, the target Doppler spectrogram may be selected to have The Doppler spectrogram of the maximum peak spectral velocity is used as the target Doppler spectrogram, or a Doppler spectrogram that meets other conditions can also be selected as the target Doppler spectrogram;
- Step 43 Obtain the Doppler spectrum envelope of the target Doppler spectrogram according to the target Doppler spectrogram;
- Step 44 Calculate the velocity time integral VTI of the blood flow at the position of the target Doppler spectrogram according to the Doppler spectrum envelope;
- Step 45 output VTI.
- the cardiac output CO is not directly calculated, but the VTI is directly calculated, and the VTI is displayed to the doctor.
- the evaluation is more accurate.
- the ultrasonic probe is controlled to transmit ultrasonic waves to the tested tissue and receive the echo of the ultrasonic waves returned by the tested tissue. According to the ultrasonic echo, find the target sampling position with the least interference of hemodynamic information, and then calculate The VTI at the target sampling location.
- the position where the hemodynamic information of the left ventricular outflow tract is least disturbed is detected by ultrasound, and the VTI of the Doppler spectrum envelope at this position is calculated, so the calculated VTI is subjected to the vascular wall friction It has the least impact and best reflects the heart's pumping ability, and thus best reflects the cardiac output.
- the principles herein can be reflected in a computer program product on a computer-readable storage medium, which is pre-installed with computer-readable program code.
- a computer-readable storage medium Any tangible, non-transitory computer-readable storage medium can be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROM, DVD, Blu Ray disks, etc.), flash memory and/or the like .
- These computer program instructions can be loaded on a general-purpose computer, a special-purpose computer, or other programmable data processing equipment to form a machine, so that these instructions executed on the computer or other programmable data processing device can generate a device that realizes the specified function.
- Computer program instructions can also be stored in a computer-readable memory, which can instruct a computer or other programmable data processing equipment to operate in a specific manner, so that the instructions stored in the computer-readable memory can form a piece of Manufactured products, including realizing devices that realize designated functions.
- Computer program instructions can also be loaded on a computer or other programmable data processing equipment, thereby executing a series of operation steps on the computer or other programmable equipment to produce a computer-implemented process, so that the execution of the computer or other programmable equipment Instructions can provide steps for implementing specified functions.
- Coupled refers to physical connection, electrical connection, magnetic connection, optical connection, communication connection, functional connection and/or any other connection.
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Abstract
Description
Claims (35)
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据所述第一超声波的超声回波信号得到血流动力信息,根据血流动力信息得到目标采样位置,所述目标采样位置是指血流动力信息受干扰最小的位置;所述处理器还用于通过所述发射电路控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并通过所述接收电路接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号,根据所述第二超声波的超声回波信号生成目标采样位置处的多普勒频谱图,根据所述多普勒频谱图得到所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 如权利要求1所述的装置,其特征在于,所述处理器还用于根据所述第一超声波的超声回波信号生成可视化的超声图像,所述超声图像包括B图像和/或血流图像。
- 如权利要求2所述的装置,其特征在于,所述处理器还用于在超声图像上标记出可视化的目标采样位置。
- 如权利要求2所述的装置,其特征在于,所述处理器还用于在超声 图像上标记出可视化的感兴趣区域,在感兴趣区域内标记出可视化的目标采样位置。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据该第一超声波的超声回波信号生成超声图像,所述超声图像包括B图像和/或血流图像,在所述超声图像上标记出目标采样位置,所述目标采样位置是所述超声图像中血流动力信息受干扰最小的位置;所述处理器还用于通过所述发射电路控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并通过所述接收电路接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号,根据该第二超声波的超声回波信号得到目标采样位置处的多普勒频谱图,根据所述多普勒频谱图获得所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 如权利要求5所述的装置,其特征在于,所述输出装置包括显示器,所述显示器用于显示图像和数据,所述数据包括VTI,所述图像包括超声图像和多普勒取样门。
- 如权利要求1-6中任一项所述的装置,其特征在于,所述血流动力 信息包括血流速度信息和/或能量信息。
- 如权利要求7所述的装置,其特征在于,所述处理器根据所述第一超声波的超声回波信号计算被测组织各接收点的血流速度信息和/或能量信息,将速度最大的位置或能量信息最大的位置作为目标采样位置。
- 如权利要求1-8中任一项所述的装置,其特征在于,所述第一超声波是聚焦波、平面波或发散波。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据所述第一超声波的超声回波信号得到血流图像数据,根据所述血流图像数据得到目标采样位置,根据所述第一超声波的超声回波信号获得所述目标采样位置处的多普勒频谱图,根据所述多普勒频谱图得到所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 如权利要求10所述的装置,其特征在于,所述处理器根据血流图像数据计算血流图像中每一点的血流动力信息,将血流动力信息数值最大的点作为目标采样位置。
- 如权利要求11所述的装置,其特征在于,所述血流动力信息包括 血流速度信息和/或能量信息。
- 如权利要求12所述的装置,其特征在于,所述处理器根据所述第一超声波的超声回波信号计算被测组织各接收点的血流速度信息和/或能量信息,将速度最大的位置或能量信息最大的位置作为目标采样位置。
- 如权利要求10-13中任一项所述的装置,其特征在于,所述第一超声波是聚焦波、平面波或发散波。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据所述第一超声波的超声回波信号得到血流动力信息,根据血流动力信息得到目标采样位置,所述目标采样位置是指血流动力信息受干扰最小的位置;所述处理器还获取目标采样位置处的多普勒频谱图,根据所述多普勒频谱图得到所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据所述第一超声波的超声回波信号得到血流动力信息,根据血流动力信息得到目标采样位置,所述目标采样位置是指血流动力信息受干扰满足第一预设条件的位置;所述处理器还用于通过所述发射电路控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并通过所述接收电路接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号,根据所述第二超声波的超声回波信号生成目标采样位置处的多普勒频谱图,根据所述多普勒频谱图得到所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测 组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据该第一超声波的超声回波信号生成超声图像,所述超声图像包括B图像和/或血流图像,在所述超声图像上标记出目标采样位置,所述目标采样位置是所述超声图像中血流动力信息受干扰满足第一预设条件的位置;所述处理器还用于通过所述发射电路控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并通过所述接收电路接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号,根据该第二超声波的超声回波信号得到目标采样位置处的多普勒频谱图,根据所述多普勒频谱图获得所述多普勒频谱图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 一种VTI测量装置,其特征在于包括:超声探头(110),用于向被测组织发射超声波,并接收由被测组织返回的超声波的回波;发射电路(120),用于按照设定模式将相应的发射序列输出至所述超声探头,以控制所述超声探头发射相应的超声波;接收电路(130),用于控制所述超声探头接收由被测组织返回的超声波的回波,获得超声回波信号;波束合成模块(140),用于对超声回波信号进行波束合成;处理器(160),用于通过所述发射电路控制所述超声探头向被测组织发射第一超声波、并通过所述接收电路接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号,根据所述第一超声波的超声回波信号得到血流动力信息,根据血流动力信息得到目标采样位置,所述目标采样位置是指血流动力信息受干扰满足第一预设条件的位置;所述处理器还获取目标采样位置处的多普勒频谱图,根据所述多普勒频谱图得到所述多普勒频谱 图的多普勒频谱包络,并根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出装置(170),用于输出VTI。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据该第一超声波的超声回波信号得到血流动力信息;根据所述血流动力信息得到目标采样位置;控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号;根据该第二超声波的超声回波信号得到目标采样位置处的多普勒频谱图;根据所述多普勒频谱图获得所述多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出所述VTI。
- 如权利要求16所述的方法,其特征在于还包括:根据所述第一超声波的超声回波信号生成可视化的超声图像并进行显示,所述超声图像包括B图像和/或血流图像。
- 如权利要求17所述的方法,其特征在于还包括:在超声图像上标记出可视化的目标采样位置。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据该第一超声波的回波生成超声图像,所述超声图像包括B图像和/或血流图像;在超声图像上标记出目标采样位置,所述目标采样位置是超声图像中血流动力信息受干扰最小的位置;控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号;根据该第二超声波的超声回波信号得到目标采样位置处的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出所述VTI。
- 一种VTI测量方法,其特征在于包括:根据第一超声波的超声回波信号得到血流动力信息,所述第一超声波的超声回波信号通过由超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波得到;根据所述血流动力信息得到目标采样位置;根据第二超声波的超声回波信号得到目标采样位置处的多普勒频谱图;根据所述多普勒频谱图获得所述多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据该第一超声波的超声回波信号得到血流动力信息;根据所述血流动力信息得到目标采样位置;根据所述第一超声波的超声回波信号获取所述目标采样位置处的多普勒频谱图;根据所述多普勒频谱图获得所述多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出所述VTI。
- 如权利要求16至21中任一项所述的方法,其特征在于,所述血流动力信息包括血流速度信息和/或能量信息。
- 如权利要求22所述的方法,其特征在于,所述目标采样位置为速度最大的位置或能量信息最大的位置。
- 如权利要求16至23任一项所述的方法,其特征在于,所述第一超声波是聚焦波、平面波或发散波。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据所述第一超声波的超声回波信号计算所述第一超声波的扫描区域内多个位置处的多普勒频谱图,获得多个多普勒频谱图;从所述多个多普勒频谱图中确定目标多普勒频谱图,其中该目标多普勒频谱图具有最大峰值频谱速度;根据所述目标多普勒频谱图,获得所述目标多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标多普勒频谱图的位置处的血流的速度时间积分VTI;输出所述VTI。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据所述第一超声波的超声回波信号计算所述第一超声波的扫描区域内多个位置处的多普勒频谱图,获得多个多普勒频谱图;从所述多个多普勒频谱图中确定满足第二预设条件的目标多普勒频谱图;根据所述目标多普勒频谱图,获得所述目标多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标多普勒频谱图的位置处的血流的速度时间积分VTI;输出所述VTI。
- 如权利要求25-26中任一项所述的方法,其特征在于,所述第一超声波是平面波或发散波。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据所述第一超声波的超声回波信号计算所述第一超声波的扫描区域内每一个点的多普勒频谱图,获得第一超声波的扫描区域内每一个点的多普勒频谱图;从所述第一超声波的扫描区域内每一个点的多普勒频谱图中确定目标多普勒频谱图,其中该目标多普勒频谱图具有最大峰值频谱速度;根据所述目标多普勒频谱图,获得所述目标多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标多普勒频谱图的位置处的血流的速度时间积分VTI;输出所述VTI。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;基于第一超声回波信号生成第一超声图像,确定所述第一超声图像的感兴趣区域;根据所述第一超声波的超声回波信号计算所述第一超声图像的感兴趣区域内每一个点的多普勒频谱图,获得多个多普勒频谱图;从所述多个多普勒频谱图中确定目标多普勒频谱图,其中该目标多普勒频谱图具有最大峰值频谱速度;根据所述目标多普勒频谱图,获得所述目标多普勒频谱图的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标多普勒频谱图的位置处的血流的速度时间积分VTI;输出所述VTI。
- 一种VTI测量方法,其特征在于包括:控制超声探头向被测组织发射第一超声波、并接收由被测组织返回的第一超声波的回波,获得第一超声波的超声回波信号;根据该第一超声波的回波生成超声图像,所述超声图像包括B图像和/或血流图像;在超声图像上标记出目标采样位置,所述目标采样位置是超声图像中血流动力信息受干扰满足第一预设条件的位置;控制所述超声探头按照多普勒模式向被测组织发射第二超声波、并接收由被测组织返回的第二超声波的回波,获得第二超声波的超声回波信号;根据该第二超声波的超声回波信号得到目标采样位置处的多普勒频谱包络;根据所述多普勒频谱包络计算所述目标采样位置处的血流的速度时间积分VTI;输出所述VTI。
- 一种计算机可读存储介质,其特征在于,包括程序,所述程序能够被处理器执行以实现如权利要求16-29中任一项所述的方法。
- 一种心脏泵血功能评估方法,其特征在于,采用如权利要求1-15中任一项所述的装置或如权利要求16-29中任一项所述方法得到的 VTI对心脏泵血功能进行评价。
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| CN116671979B (zh) * | 2022-02-23 | 2026-03-17 | 深圳市理邦精密仪器股份有限公司 | 一种心输出量的检测方法、装置、电子设备及存储介质 |
| CN116491981A (zh) * | 2023-04-24 | 2023-07-28 | 必欧瀚生物技术(合肥)有限公司 | 一种血流检测仪 |
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| CN115517705A (zh) * | 2021-06-24 | 2022-12-27 | 深圳迈瑞生物医疗电子股份有限公司 | 频谱分析方法和超声成像系统 |
| CN115670513A (zh) * | 2021-07-23 | 2023-02-03 | 深圳迈瑞生物医疗电子股份有限公司 | 基于超声的血流测量方法和超声成像系统 |
| CN115770062B (zh) * | 2021-09-07 | 2025-10-10 | 深圳迈瑞生物医疗电子股份有限公司 | 一种超声波数据的处理方法、成像装置 |
| CN115770062A (zh) * | 2021-09-07 | 2023-03-10 | 深圳迈瑞生物医疗电子股份有限公司 | 一种超声波数据的处理方法、成像装置 |
| CN113749690B (zh) * | 2021-09-24 | 2024-01-30 | 无锡祥生医疗科技股份有限公司 | 血管的血流量测量方法、装置及存储介质 |
| CN113749690A (zh) * | 2021-09-24 | 2021-12-07 | 无锡祥生医疗科技股份有限公司 | 血管的血流量测量方法、装置及存储介质 |
| CN114504378A (zh) * | 2022-01-04 | 2022-05-17 | 南京航空航天大学 | 一种集超声影像引导于一体微波消融治疗仪 |
| CN114533127A (zh) * | 2022-01-13 | 2022-05-27 | 南京易云医疗设备科技有限公司 | 一种用于对血管检测的多普勒超声系统 |
| CN114664414A (zh) * | 2022-03-28 | 2022-06-24 | 中国人民解放军总医院第三医学中心 | 血流频谱包络线生成方法及装置、可读存储介质 |
| CN114869335A (zh) * | 2022-04-07 | 2022-08-09 | 皖南医学院第一附属医院(皖南医学院弋矶山医院) | 一种局部血流指数的测定方法及设备 |
| CN114869335B (zh) * | 2022-04-07 | 2023-12-08 | 皖南医学院第一附属医院(皖南医学院弋矶山医院) | 一种局部血流指数的测定方法及设备 |
| CN115736978A (zh) * | 2022-11-23 | 2023-03-07 | 武汉中科医疗科技工业技术研究院有限公司 | 超声成像方法、装置、计算机设备和存储介质 |
| CN116725572A (zh) * | 2023-04-10 | 2023-09-12 | 苏州圣泽医疗科技有限公司 | 连续心排量获取装置、电子设备、计算设备及存储介质 |
| CN116650017B (zh) * | 2023-08-01 | 2023-10-27 | 苏州晟智医疗科技有限公司 | 血流参数测量装置、设备及存储介质 |
| CN116650017A (zh) * | 2023-08-01 | 2023-08-29 | 苏州晟智医疗科技有限公司 | 血流参数测量装置、设备及存储介质 |
| CN120788615A (zh) * | 2025-09-12 | 2025-10-17 | 苏州晟智医疗科技有限公司 | 心输出量确定方法、装置、电子设备和存储介质 |
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