CN116650017B - Blood flow parameter measuring device, apparatus, and storage medium - Google Patents
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Abstract
The application relates to a blood flow parameter measuring device, equipment and a storage medium, belonging to the field of medical appliances. Comprising the following steps: the first acquisition module is used for acquiring the spectrum envelopes of the plurality of ultrasonic acquisition channels; the comparison module is used for acquiring preset comparison data according to the frequency spectrum envelope, comparing the comparison data of the plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels; and the second acquisition module is used for acquiring blood flow parameters according to the ultrasonic examination data of the optional channels. The blood flow parameter measuring device, the blood flow parameter measuring equipment and the storage medium provided by the embodiment of the application can solve the problem that the monitoring result is unstable because of the movement of a human body or the specificity of the monitoring part.
Description
Technical Field
The present application relates to the field of medical devices, and in particular, to a blood flow parameter measurement apparatus, a blood flow parameter measurement device, and a storage medium.
Background
Along with the development of science and technology, for various diseases of human body, the doctor can be helped to diagnose by acquiring relevant parameters of the human body through medical detection equipment. For example, the detection of blood flow parameters is performed by a doppler blood flow detection device.
In some applications, the Doppler blood flow detection device may be used for long-term monitoring. However, in the monitoring process, due to the movement of the human body or the specificity of the monitored part, the ultrasonic sensor is easily deviated from the position of the blood vessel, and a stable monitoring result cannot be obtained. The specificity of the monitoring part can be that the surface of the monitoring part is not a large plane, for example, the monitoring part is a part with the surface of the neck, the limbs and the like being arc-shaped.
Disclosure of Invention
In view of the above, an embodiment of the present application provides a blood flow parameter measurement device, apparatus and storage medium for solving at least one of the problems in the background art.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a blood flow parameter measurement device, which is applied to a doppler blood flow detection apparatus, including:
the first acquisition module is used for acquiring the spectrum envelopes of the plurality of ultrasonic acquisition channels;
the comparison module is used for acquiring preset comparison data according to the spectrum envelope, comparing the comparison data of the ultrasonic acquisition channels in pairs sequentially, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
And the second acquisition module is used for acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
Optionally, the comparison module is specifically configured to:
comparing the comparison data of the first channel with the comparison data of the second channel;
comparing the comparison data of the channels reserved after the comparison with the comparison data of a third channel;
the comparison data of all channels are compared in sequence in pairs.
Optionally, the preset contrast data includes a first blood flow parameter and a first noise ratio;
the comparison module is further configured to: comparing the first blood flow parameter of the first channel with the first blood flow parameter of the second channel; the first channel and the second channel are formed by sequencing the measured values of the first blood flow parameters;
if the first ratio of the first blood flow parameter of the first channel to the first blood flow parameter of the second channel is larger than a first preset value, obtaining a second ratio of the first noise ratios of the two channels;
if the second ratio is larger than a second preset value, reserving the second channel, and eliminating the first channel;
otherwise, the first channel is reserved, and the second channel is eliminated.
Optionally, the first blood flow parameter is a velocity time integral VTI of the blood flow, and the first preset value is 100% -109%.
Optionally, the first noise ratio is obtained by the following expression:
P=Pout/Pin；
p is the first noise ratio, pout is the average of the frequencies outside the envelope in the spectral envelope, pin is the average of the frequencies inside the envelope in the spectral envelope;
the second preset value is 100% -118%.
Optionally, the first obtaining module is further configured to:
and closing an ultrasonic acquisition channel in which the target detection object is not detected.
Optionally, the comparing module is further configured to:
and determining the optional channel determined by the last detection as the current optional channel.
Optionally, the comparing module is further configured to:
acquiring preset contrast data of the current optional channel; if any one of the preset comparison data and the corresponding comparison data acquired last time exceeds a third preset value, or the preset comparison data and the preset comparison data acquired last time both exceed a fourth preset value, determining that the optional channel is abnormal, and re-determining the current optional channel.
In a second aspect, an embodiment of the present application provides a doppler blood flow detection apparatus, including:
any one of the blood flow parameter measuring devices described above;
the wafer groups are used for collecting ultrasonic signals corresponding to blood flow, and are provided with a plurality of wafer groups, and each wafer group comprises an ultrasonic collecting channel.
In a third aspect, embodiments of the present application provide a computing device, the computing device comprising: a memory component, a communication bus, and a processing component, wherein:
the storage component is used for storing an operation program of the blood flow parameter measuring device;
the communication bus is used for realizing connection communication between the storage component and the processing component;
the processing unit is configured to execute an operation program of the blood flow parameter measurement device, so as to implement the following steps:
acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
and acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, having an executable program stored thereon,
the executable program when executed by the processor performs the steps of:
acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
And acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
The blood flow parameter measuring device, the device and the storage medium provided by the embodiment of the application comprise: the first acquisition module is used for acquiring the spectrum envelopes of the plurality of ultrasonic acquisition channels; the comparison module is used for acquiring preset comparison data according to the spectrum envelope, comparing the comparison data of the plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels; and the second acquisition module is used for acquiring blood flow parameters according to the ultrasonic examination data of the optional channels. And comparing the contrast data of the ultrasonic acquisition channels to determine an optional channel, and acquiring blood flow parameters according to the optional channel. The problem that a stable monitoring result cannot be obtained due to the movement of a human body or the specificity of a monitoring part can be solved. Therefore, the blood flow parameter measuring device, the blood flow parameter measuring equipment and the blood flow parameter storage medium can solve the problem that the monitoring result is unstable due to the motion of a human body or the specificity of the monitoring part.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a blood flow parameter measurement device according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of an implementation process of the blood flow parameter measurement device according to the embodiment of the present application;
FIG. 3 is a detailed flow chart of the implementation process of the blood flow parameter measuring device according to the embodiment of the present application;
FIG. 4 is a detailed exploded schematic view of the "optimal channel selection" step of FIG. 3;
fig. 5 is a schematic diagram of a doppler blood flow detection device according to an embodiment of the present application;
fig. 6 is a schematic diagram of a wafer group in a doppler blood flow detection device according to an embodiment of the present application;
fig. 7 is a schematic diagram II of a wafer set in a doppler blood flow detection device according to an embodiment of the present application;
fig. 8 is a schematic diagram II of a doppler blood flow detection device according to an embodiment of the present application;
Fig. 9 is a schematic structural diagram of a computing device according to an embodiment of the present application.
Reference numerals illustrate:
100. a blood flow parameter measuring device; 101. a first acquisition module; 102. a comparison module; 103. a second acquisition module; 601. a set of dies; 6011. emitting the wafer; 6012. receiving a wafer; 602. an internal signal conductor; 603. a signal connector; 604. an external soft silica gel; 605. positioning silica gel by using an internal wafer group; 900. a computing device; 901. a storage section; 902. a communication bus; 903. a processing section; 904. an input device; 905. an output device; 906. an external communication interface.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the application are shown in the drawings, it should be understood that the application may be embodied in various forms and should not be limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the application may be practiced without one or more of these details. In other instances, well-known features have not been described in detail so as not to obscure the application; that is, not all features of an actual implementation are described in detail herein, and well-known functions and constructions are not described in detail.
In order to provide a thorough understanding of the present application, detailed steps and detailed structures will be presented in the following description in order to explain the technical solution of the present application. Preferred embodiments of the present application are described in detail below, however, the present application may have other embodiments in addition to these detailed descriptions.
Example 1
The embodiment of the application provides a blood flow parameter measuring device 100, which is applied to Doppler blood flow detection equipment. Fig. 1 is a schematic structural diagram of a blood flow parameter measurement device 100 according to an embodiment of the present application, where, as shown in fig. 1, the blood flow parameter measurement device 100 includes:
a first acquisition module 101, configured to acquire spectral envelopes of a plurality of ultrasound acquisition channels;
the comparison module 102 is configured to obtain preset comparison data according to the spectrum envelope, compare the comparison data of the plurality of ultrasonic acquisition channels in pairs sequentially, and determine an ultrasonic acquisition channel with a detection sensitivity higher than a preset value and/or noise lower than the preset value as an optional channel;
a second acquisition module 103, configured to acquire a blood flow parameter according to the ultrasound examination data of the optional channel.
It may be appreciated that, in the first acquisition module 101, the ultrasound acquisition channel may be a channel in which the ultrasound wafer acquires an ultrasound signal corresponding to blood flow. The blood flow parameter measuring device 100 obtains an ultrasonic signal corresponding to blood flow through an ultrasonic acquisition channel, and further obtains a spectrum envelope through data arrangement, analysis and the like to obtain blood flow parameters. The ultrasonic wafer may include a transmitting wafer that transmits an ultrasonic signal of a preset frequency according to an instruction of the blood flow parameter measurement device 100, and a receiving wafer that receives the ultrasonic signal passing through the blood flow according to the instruction of the blood flow parameter measurement device 100 and transmits to the blood flow parameter measurement device 100.
It can be appreciated that, in the comparing module 102, the comparison data is preset, so as to determine whether the data acquired by the ultrasound acquisition channel is accurate and reliable. The ultrasonic acquisition channel with better monitoring result is selected from the ultrasonic acquisition channels, so that the problem of unstable monitoring result caused by human body movement or the specificity of the monitoring part is solved. The preset contrast data may be one parameter of blood flow parameters or other parameters. The preset purpose is to facilitate more convenient selection of an ultrasonic acquisition channel with better monitoring results.
In some embodiments, the comparison module 102 is specifically configured to:
comparing the comparison data of the first channel with the comparison data of the second channel;
comparing the comparison data of the channels reserved after the comparison with the comparison data of a third channel;
the comparison data of all channels are compared in sequence in pairs.
It will be appreciated that since only one alternative channel needs to be selected, a pairwise comparison may be employed, eliminating one channel at a time.
In some embodiments, the preset contrast data comprises a first blood flow parameter and a first noise ratio;
the comparison module 102 is further configured to:
comparing the first blood flow parameter of the first channel with the first blood flow parameter of the second channel; the first channel and the second channel are formed by sequencing the measured values of the first blood flow parameters;
If the first ratio of the first blood flow parameter of the first channel to the first blood flow parameter of the second channel is larger than a first preset value, obtaining a second ratio of the first noise ratios of the two channels;
if the second ratio is larger than a second preset value, reserving the second channel, and eliminating the first channel;
otherwise, the first channel is reserved, and the second channel is eliminated.
It will be appreciated that the first blood flow parameter is one of the parameters that the monitoring of the organism needs to detect. The first noise ratio is a parameter preset for channel selection, and is not a parameter to be detected by the monitoring organism.
It is understood that the preset contrast data includes two data, a first blood flow parameter and a first noise ratio. Therefore, in the two-by-two comparison, the first blood flow parameter needs to be compared first, and if the first comparison result can directly determine the eliminated channel, one channel is directly eliminated. Otherwise, the first noise ratio is also required to be compared, and one channel is eliminated according to the second comparison result.
It will be appreciated that for more scientific comparison, the results of the comparison are ratios, not differences.
It should be noted that, the first channel and the second channel are both formed by sequencing the measured values of the first blood flow parameter. I.e. the first blood flow parameter of the first channel is larger than the first blood flow parameter of the second channel, and so on.
The comparison process is as follows:
first, a first blood flow parameter is compared:
if the first ratio of the first blood flow parameter of the first channel to the first blood flow parameter of the second channel is greater than a first preset value, it is indicated that the difference between the first blood flow parameters detected by the two channels is relatively large, and it is impossible to determine which channel has a more accurate detection value. Otherwise, it can be stated that the difference of the first blood flow parameters detected by the two channels is smaller, and that the detection results of the two channels are closer to the accurate value. Therefore, any channel may be selected, and in practice, a channel with a large value of the first blood flow parameter may be selected, i.e. the first channel is reserved. It will be appreciated that a large value of the first blood flow parameter may indicate that the detection sensitivity of the channel is higher than a preset value. The preset value here may not be a defined value, but may be defined according to different parameters. For example, if the difference between the two first blood flow parameter values is relatively small, the detection sensitivity of the channel with the large first blood flow parameter value is higher than the preset value. Otherwise, the problem of comparing the detection sensitivity is not required, as follows.
Next, the first noise ratio is compared:
in the case where it is impossible to determine which channel has a more accurate detection value, the next comparison is required:
Acquiring a second ratio of the first noise ratios of the two channels;
if the second ratio is larger than a second preset value, the difference of the first noise ratios of the two channels is larger, the channel with the small first noise ratio is reserved, and the channel with the large first noise ratio is eliminated; the smaller the noise ratio, the less interference is experienced and the more accurate the measurement. The noise is smaller than a predetermined value of the predetermined values, but rather, the relative determination, for example, the detection of the first channel having a smaller noise ratio, may be regarded as the noise being smaller than the predetermined value after comparing the two channels. And, the determination of the reserved channel requires comprehensive consideration of detection sensitivity and noise, not just based on one of them, as follows.
Otherwise, the difference of the first noise ratios of the two channels is smaller, so that any one channel can be selected, in practice, a channel with a large first blood flow parameter value can be selected, and the detection sensitivity of the channel with the large first blood flow parameter value is higher than a preset value, namely the first channel is reserved.
In some embodiments, the first blood flow parameter is a velocity time integral VTI of the blood flow, and the first preset value is 100% -109%.
Velocity time integral (Velocity Time Integral, VTI) is a common blood flow parameter. The VTI is selected as preset contrast data, so that the method has the characteristics of convenience in acquisition and sensitivity in response, and can well reflect the stability of data of an ultrasonic acquisition channel. Under the conditions of good layout and normal acquisition of ultrasonic wafers, the fluctuation of the VTI is not too large, so that the first preset value is set to be 100% -109%.
Specifically, in practice, the first preset value may be set to 105%.
It can be understood that the measured value of VTI is large, which can reflect the sensitivity of ultrasonic wafer measurement, and when the VTI values measured by two channels are not greatly different, the VTI value is generally taken as the final measured value, and if the difference is relatively large, the VTI value needs to be determined by the first noise ratio.
In some embodiments, the first noise ratio is obtained by the expression:
P=Pout/Pin；
p is the first noise ratio, pout is the average of the frequencies outside the envelope in the spectral envelope, pin is the average of the frequencies inside the envelope in the spectral envelope;
the second preset value is 100% -118%.
It will be appreciated that frequencies outside the envelope in the spectral envelope may be interference frequencies at other locations that do not reflect the condition of the blood flow, otherwise known as "noise". The condition that effective information is acquired by the channel can be reflected through the first noise ratio.
In specific practice, the second preset value may be set to 115%.
In some embodiments, the first acquisition module 101 is further configured to:
and closing an ultrasonic acquisition channel in which the target detection object is not detected.
Therefore, invalid work of an ultrasonic acquisition channel and data processing amount of a processor can be reduced, and energy consumption is saved. In particular, the shut down may be performed by an analog circuit.
In some embodiments, the comparison module 102 is further configured to:
and determining the optional channel determined by the last detection as the current optional channel.
I.e. in long-term monitoring use of the doppler flow detection device, it is necessary to determine the alternative channel by the comparison module 102, except for the first use. And after the use, the optional channel determined by the last detection can be directly determined as the optional channel of the current time. Therefore, the energy consumption is saved, and the detection speed is also increased.
In some embodiments, the comparison module 102 is further configured to:
acquiring preset contrast data of the current optional channel; if any one of the preset comparison data and the corresponding comparison data acquired last time exceeds a third preset value, or the preset comparison data and the preset comparison data acquired last time both exceed a fourth preset value, determining that the optional channel is abnormal, and re-determining the current optional channel.
Thus, under the condition that the human body motion or the performance of the ultrasonic wafer is changed, the method can find out and redetermine the current optional channel in time. The method for redefining the current optional channel is the same as the previous method for determining the optional channel.
In order to better understand the blood flow parameter measurement device 100 according to the embodiment of the present application, the following describes the implementation procedure of the blood flow parameter measurement device 100 according to the embodiment of the present application. Fig. 2 is a flow chart illustrating an implementation procedure of the blood flow parameter measurement device 100 according to an embodiment of the present application, and as shown in fig. 2, the implementation procedure may include:
step 201: acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
step 202: acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
step 203: blood flow parameters are acquired based on ultrasound examination data of the optional channels.
Fig. 3 is a detailed flowchart of an implementation process of the blood flow parameter measurement device 100 according to an embodiment of the present application, where, as shown in fig. 3, the implementation process may include:
step 301: data is collected. And a plurality of ultrasonic acquisition channels are synchronously acquired. Specifically, if a certain channel is found to not detect the target detection object, the acquisition function of the ultrasonic acquisition channel can be closed.
Step 302: and (5) preprocessing data. For example, the data is sorted, classified, etc., and the data with wrong format can be removed, namely, the data preprocessing mainly carries out data processing in a form.
Step 303: and (5) digital filtering. Specifically, digital-to-analog conversion is possible, and then the frequency of the analog quantity is obtained to obtain a spectrogram.
Step 304: and (5) FFT calculation. A fast fourier transform (fast Fourier transform, FFT) provides the basis for performing the envelope calculation.
Step 305: and (5) envelope calculation. By calculation, the envelope of the spectrum is obtained on the spectrogram.
Step 306: is there an optimal channel? If not, go to step 307, otherwise, go to step 308. Step 307 may be entered when the doppler flow detection device is first enabled, otherwise step 308 may be entered.
Step 307: and (5) selecting an optimal channel. And comparing preset comparison data of the channels in pairs to determine an optimal channel, wherein the optimal channel is the same as the optional channel. Specific steps are described below.
Step 308: is the channel signal abnormal? If so, go to step 307, otherwise, go to step 309. Specifically, the channel signal anomaly may be: comparing the current detection value of the preset comparison data with the historical data, and if the change of any one comparison data exceeds c or the change of two or more comparison data exceeds d, determining that the channel signal is abnormal. c may be 12% -18% and d may be 8% -12%. c may be the third preset value described above, and d may be the fourth preset value described above.
In specific practice, c may be 15% and d may be 10%.
Step 309: and (5) displaying the frequency spectrum. And converting the data about blood flow acquired by the optimal channel into a spectrogram and displaying the spectrogram.
Step 310: envelope display. Similarly, the envelope curve of the spectrogram is obtained through calculation and displayed.
Step 311: and displaying blood flow parameters. On the basis of the envelope curve, analysis and calculation are carried out, and relevant blood flow parameters are obtained and displayed. It will be appreciated that the display of step 310 and this step may be displayed together, for example, the envelope of the spectrogram may be displayed on the upper half of the screen and the blood flow parameters may be displayed on the lower half.
FIG. 4 is a detailed exploded schematic view of the "optimal channel selection" step of FIG. 3, as shown in FIG. 4, which may include:
step 3071: the VTI is ordered. Each channel is ordered by the measured VTI size.
Step 3072: VTI comparison of channels. And comparing the VTI of the two channels with the largest VTI, or comparing the VTI of the reserved channel in comparison with the VTI of the channels which are not compared, wherein the channels which are not compared are sequentially selected according to the sequence of the VTI.
Step 3073: whether the ratio of VTI_1/VTI_2 > aVTI_1 to VTI_2 is greater than a, as previously described, the channels have been ordered by the size of the VTI, i.e., VTI_1 is greater than VTI_2.1 and 2 are the sequence numbers of the two channels that need to be compared. If not, the difference of the first blood flow parameters obtained by the two channel detection is smaller, a channel with a large measured value of the first blood flow parameters is selected, and the step 3074 is entered; if so, a further comparison of the first noise ratios of the two channels is required, step 3075 is entered. Specifically, a may be 100% -109%. a may be the first preset value described above.
Step 3074: select 1 as the reserved channel.
Step 3075: whether the ratio of P_1/P_2 > bP_1 to P_2 is larger than b, and P is the first noise ratio. If not, indicating that the first noise ratio of the two channels is not different, selecting a channel with a large measurement value of the first blood flow parameter, and entering step 3074; if so, it is indicated that the difference in the first noise ratio between the two channels is relatively large, and a channel having a smaller first noise ratio is selected, and the process proceeds to step 3076. Specifically, b may be 100% -118%. b may be the second preset value described above.
Step 3076: select 2 as the reserved channel.
Step 3077: do there are uncompared channels? If there are any uncompared channels, yes, go back to step 3072, and if not, go to step 3078.
Step 3078: an optimal channel is determined.
The modules included in the embodiment may be implemented by a processor in a computer; but may also be implemented by logic circuits in a computer. The processor may be a general purpose processor, a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The general-purpose processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), or any other conventional processor.
Example two
An embodiment of the present application provides a doppler blood flow detection device, and fig. 5 is a schematic diagram of a doppler blood flow detection device provided in an embodiment of the present application, where, as shown in fig. 5, the doppler blood flow detection device includes:
the blood flow parameter measuring device of embodiment one;
the wafer groups are used for collecting ultrasonic signals corresponding to blood flow, are provided with a plurality of wafer groups, namely a wafer group 1 and a wafer group 2 … … wafer group n, and each wafer group comprises an ultrasonic collecting channel.
It will be appreciated that the wafer group transmits ultrasonic signals in accordance with instructions of the blood flow parameter measurement device and transmits the received feedback ultrasonic signals to the blood flow parameter measurement device. For convenience of description, a plurality of wafer sets and related components in the same doppler flow detection device are collectively referred to as a multi-path wafer set.
Specifically, the doppler blood flow detection apparatus further includes:
an ultrasonic transmitting circuit (not shown in the figure);
an ultrasound receiving circuit for receiving ultrasound signals reflected by the blood flow;
and the analog-to-digital converter (Analog to Digital Converter, ADC) is used for converting the received analog signals into digital signals so as to facilitate the processing of the blood flow parameter measuring device. In this embodiment, the blood flow parameter measurement device includes an FPGA.
In consideration of the motion of the human body or the specificity of the monitored part, a plurality of wafer groups, namely a plurality of ultrasonic acquisition channels, can be distributed on the part of the human body to be measured. The plurality of ultrasonic acquisition channels can acquire the blood flow condition of the same part, so that the optimal channel can be selected according to the blood flow parameter measuring device provided by the embodiment of the application, and the influence of the motion of a human body or the specificity of a monitored part on acquisition is reduced.
Specifically, the layout of multiple wafer sets can be of two common types, one is that of arranging the wafer sets in the flow direction sequence of the blood vessels, see fig. 6; in fig. 6, the multi-channel wafer group includes 5 wafer groups 601, and each wafer group 601 includes a transmitting wafer 6011 and a receiving wafer 6012. More specifically, the multi-way wafer set further includes internal signal wires 602, signal connectors 603, external soft silica gel 604, and internal wafer set positioning silica gel 605. Wherein the transmitting die 6011 is labeled T and the receiving die 6012 is labeled R. The outer soft silica gel 604 is used to protect the wafer assembly, wrap the outer surface of the wafer assembly, and also facilitate fixation at the measurement site. The inner-group positioning silica gel 605 is used for limiting the positions of adjacent groups of wafers and plays a role in positioning.
The other is circumferentially arranged around a site, see fig. 7. Similarly, the parts included in the multi-path wafer group are the same as those described above, but the distribution positions are different, and the description is omitted.
Further, fig. 8 is a schematic diagram two of a doppler blood flow detection device according to an embodiment of the present application, as shown in fig. 8, the doppler blood flow detection device may further include:
and the multi-path change-over switch is used for closing an ultrasonic acquisition channel in which the target detection object is not detected, or can manually close an unnecessary ultrasonic acquisition channel.
Therefore, invalid work of the ultrasonic acquisition channel and data processing capacity of the blood flow parameter measuring device can be reduced, and energy consumption is saved. In particular, the shut down may be performed by an analog circuit.
The description of the apparatus embodiments above is similar to that of the apparatus embodiments above, with similar benefits as the apparatus embodiments. For technical details not disclosed in the apparatus of this embodiment, please refer to the description of the embodiment of the device in this application for understanding.
Example III
An embodiment of the present application provides a computing device 900, as shown in fig. 9, the computing device 900 includes: a storage component 901, a communication bus 902, and a processing component 903, wherein:
the storage part 901 is used for storing an operation program of the blood flow parameter measuring device;
the communication bus 902 is configured to enable connection communication between the storage unit 901 and the processing unit 903;
The processing means 903 of the above-mentioned processing means,
an operating program for executing the blood flow parameter measuring device to realize the steps of:
acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
blood flow parameters are acquired based on ultrasound examination data of the optional channels.
The type or structure of the storage unit 901 may refer to a memory in a storage medium, which will not be described herein.
The processor may be a general purpose processor, a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The general-purpose processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), or any other conventional processor.
In some embodiments, computing device 900 may further include: input device 904, output device 905, and external communication interface 906, which are interconnected by a bus system and/or other form of connection mechanism (not shown). In this embodiment, the input device 904 may be a network connector, an analog-to-digital converter, etc., and the output device 905 may be a display, a speaker, etc.
In some embodiments, input device 904 may also include, for example, a keyboard, a mouse, a microphone, and so forth. The output device 905 may output various information to the outside, and may include, for example, a printer, a projector, a communication network, a remote output apparatus connected thereto, and the like in addition to the above-described display, speaker. The external communication interface 906 may be wired, such as a standard serial port (RS 232), a General-purpose interface bus (GPIB) interface, an ethernet (ethernet) interface, a universal serial bus (Universal Serial Bus, USB) interface, or wireless, such as wireless network communication technology (WiFi), bluetooth (blue) or the like.
The description of the apparatus embodiments above is similar to that of the apparatus embodiments above, with similar benefits as the apparatus embodiments. For technical details not disclosed in the apparatus of this embodiment, please refer to the description of the embodiment of the device in this application for understanding.
Example IV
Embodiments of the present application provide a computer-readable storage medium, having an executable program stored thereon,
the executable program when executed by the processor performs the steps of:
Acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and/or noise lower than the preset value as optional channels;
blood flow parameters are acquired based on ultrasound examination data of the optional channels.
By way of example, a computer-readable storage medium may comprise any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A computer readable storage medium is a tangible device that can hold and store instructions for use by an instruction execution device. The readable storage medium may include, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: portable computer disks, hard disks, random access Memory (RAM, random Access Memory), read Only Memory (ROM), flash Memory (Flash Memory), portable compact disc Read Only Memory (CD-ROM, compact Disc Read-Only Memory), digital versatile discs (DVD, digital Versatile Disc), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove protrusion structures such as instructions stored thereon, and any suitable combination of the foregoing. Wherein:
The RAM includes: static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory).
The ROM includes: a programmable read-Only Memory (PROM, programmable Read-Only Memory), an erasable programmable read-Only Memory (EPROM, erasable Programmable Read-Only Memory), an electrically erasable programmable read-Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory).
The computer-readable storage medium as used herein is not to be construed as a transitory signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., an optical pulse through a fiber optic cable), or an electrical signal transmitted through an electrical wire.
The description of the computer-readable storage medium embodiments above is similar to that of the apparatus embodiments described above, with similar benefits as the apparatus embodiments. For technical details not disclosed in the computer-readable storage medium of the present embodiment, please refer to the description of the apparatus embodiment of the present application.
It should be noted that, the apparatus, device, and storage medium embodiments provided by the embodiments of the present application belong to the same concept; the features of the embodiments described in the present application may be combined arbitrarily without any conflict.
Embodiments of the present application may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present application. The computer program product may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's device, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present application are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information for computer readable program instructions, which can execute the computer readable program instructions.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.
Various aspects of the present application are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
In the following description, the term "first/second/third" is merely to distinguish similar objects and does not represent a particular ordering for the objects, it being understood that the "first/second/third" may interchange a particular order or sequencing as allowed.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
It should be appreciated that reference throughout this specification to "one embodiment" or "some embodiments" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the modules is only one logical function division, and there may be other divisions in practice, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or modules, whether electrically, mechanically, or otherwise.
The modules described above as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules; can be located in one place or distributed to a plurality of network modules; some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated in one processing module, or each functional module may be separately used as one module, or two or more functional modules may be integrated in one module; the integrated modules may be implemented in hardware or in hardware plus software functional modules.
Those of ordinary skill in the art will appreciate that: all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the foregoing program may be stored in a computer readable storage medium, which when executed, performs steps including the above method embodiments.
Alternatively, the above-described integrated modules of the present application, if implemented in the form of software functional modules and sold or used as a stand-alone product, may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the methods described in the embodiments of the present application. Thus, embodiments of the application are not limited to any specific combination of hardware and software.
The methods disclosed in the method embodiments provided by the application can be arbitrarily combined under the condition of no conflict to obtain a new method embodiment. The features disclosed in the several product embodiments provided by the application can be combined arbitrarily under the condition of no conflict to obtain new product embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the above examples are illustrative and are not intended to encompass all possible implementations encompassed by the claims. Various modifications and changes may be made in the above embodiments without departing from the scope of the disclosure. Likewise, the individual features of the above embodiments can also be combined arbitrarily to form further embodiments of the application which may not be explicitly described. Therefore, the above examples merely represent several embodiments of the present application and do not limit the scope of protection of the patent of the present application.
Claims (11)
1. A blood flow parameter measuring device applied to a doppler blood flow detection apparatus, comprising:
the first acquisition module is used for acquiring the spectrum envelopes of the plurality of ultrasonic acquisition channels;
the comparison module is used for acquiring preset comparison data according to the spectrum envelope, comparing the comparison data of the ultrasonic acquisition channels in pairs sequentially, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and noise lower than the preset value as optional channels; the preset comparison data comprises a first blood flow parameter and a first noise ratio; the first blood flow parameter is one of parameters to be detected by the monitored organism, and the first noise ratio is a parameter required by a non-monitored organism preset for channel selection; determining a reserved channel, wherein detection sensitivity and noise need to be comprehensively considered; the first blood flow parameter is a velocity time integral VTI of the blood flow, and the first noise ratio is obtained by the following expression:
P＝Pout/Pin；
p is the first noise ratio, pout is the average of the frequencies outside the envelope in the spectral envelope, pin is the average of the frequencies inside the envelope in the spectral envelope;
and the second acquisition module is used for acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
2. The blood flow parameter measurement device of claim 1, wherein the comparison module is specifically configured to:
comparing the comparison data of the first channel with the comparison data of the second channel;
comparing the comparison data of the channels reserved after the comparison with the comparison data of a third channel;
the comparison data of all channels are compared in sequence in pairs.
3. The blood flow parameter measuring device according to claim 2, wherein,
the comparison module is further configured to: comparing the first blood flow parameter of the first channel with the first blood flow parameter of the second channel; the first channel and the second channel are formed by sequencing the measured values of the first blood flow parameters;
if the first ratio of the first blood flow parameter of the first channel to the first blood flow parameter of the second channel is larger than a first preset value, obtaining a second ratio of the first noise ratios of the two channels;
if the second ratio is larger than a second preset value, reserving the second channel, and eliminating the first channel;
otherwise, the first channel is reserved, and the second channel is eliminated.
4. A blood flow parameter measuring device according to claim 3, wherein the first preset value is 100% -109%.
5. A blood flow parameter measuring apparatus according to claim 3, wherein,
the second preset value is 100% -118%.
6. The blood flow parameter measurement device of any one of claims 1-5, wherein the first acquisition module is further configured to:
and closing an ultrasonic acquisition channel in which the target detection object is not detected.
7. The blood flow parameter measurement device of any one of claims 1-5, wherein the comparison module is further configured to:
and determining the optional channel determined by the last detection as the current optional channel.
8. The blood flow parameter measurement device of claim 7, wherein the comparison module is further configured to:
acquiring preset contrast data of the current optional channel; if any one of the preset comparison data and the corresponding comparison data acquired last time exceeds a third preset value, or the preset comparison data and the preset comparison data acquired last time both exceed a fourth preset value, determining that the optional channel is abnormal, and re-determining the current optional channel.
9. A doppler flow detection device, comprising:
the blood flow parameter measurement device of any one of claims 1-8;
The wafer groups are used for collecting ultrasonic signals corresponding to blood flow, and are provided with a plurality of wafer groups, and each wafer group comprises an ultrasonic collecting channel.
10. A computing device, the computing device comprising: a memory component, a communication bus, and a processing component, wherein:
the storage component is used for storing an operation program of the blood flow parameter measuring device;
the communication bus is used for realizing connection communication between the storage component and the processing component;
the processing unit is configured to execute an operation program of the blood flow parameter measurement device, so as to implement the following steps:
acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and noise lower than the preset value as optional channels; the preset comparison data comprises a first blood flow parameter and a first noise ratio; the first blood flow parameter is one of parameters to be detected by the monitored organism, and the first noise ratio is a parameter required by a non-monitored organism preset for channel selection; determining a reserved channel, wherein detection sensitivity and noise need to be comprehensively considered; the first blood flow parameter is a velocity time integral VTI of the blood flow, and the first noise ratio is obtained by the following expression:
P＝Pout/Pin；
P is the first noise ratio, pout is the average of the frequencies outside the envelope in the spectral envelope, pin is the average of the frequencies inside the envelope in the spectral envelope;
and acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
11. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an executable program,
the executable program when executed by the processor performs the steps of:
acquiring spectrum envelopes of a plurality of ultrasonic acquisition channels;
acquiring preset contrast data according to the spectrum envelope, comparing the contrast data of a plurality of ultrasonic acquisition channels in pairs in sequence, and determining the ultrasonic acquisition channels with detection sensitivity higher than a preset value and noise lower than the preset value as optional channels; the preset comparison data comprises a first blood flow parameter and a first noise ratio; the first blood flow parameter is one of parameters to be detected by the monitored organism, and the first noise ratio is a parameter required by a non-monitored organism preset for channel selection; determining a reserved channel, wherein detection sensitivity and noise need to be comprehensively considered; the first blood flow parameter is a velocity time integral VTI of the blood flow, and the first noise ratio is obtained by the following expression:
P＝Pout/Pin；
P is the first noise ratio, pout is the average of the frequencies outside the envelope in the spectral envelope, pin is the average of the frequencies inside the envelope in the spectral envelope;
and acquiring blood flow parameters according to the ultrasonic examination data of the optional channels.
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