CN117322916A - Ultrasonic diagnosis double-signal synchronous scanning method, system and storage medium - Google Patents
Ultrasonic diagnosis double-signal synchronous scanning method, system and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a system and a storage medium for synchronously scanning ultrasonic diagnosis double signals, which comprise the steps of transmitting ultrasonic pulses, wherein the ultrasonic pulses are used for scanning a first signal of a first target position and a second signal of a second target position; receiving an echo signal returned based on the ultrasonic pulse, wherein the echo signal comprises a first signal and a second signal; preprocessing the echo signals according to a preset sampling rate to separate the first signals and the second signals and respectively obtain synchronous first signal speed information and second signal speed information. The invention can synchronously detect the speed parameters of blood flow information and the speed parameters of tissue information at different positions in real time, so that the result is more reliable and accurate. Synchronous detection of blood flow velocity information and tissue velocity information has a very reference significance for diagnosis of some diseases; simultaneously, the system can also realize simultaneous observation of the speeds of blood flow movement or tissue movement at different positions.
Description
Technical Field
The invention relates to the technical field of ultrasonic imaging, in particular to an ultrasonic diagnosis double-signal synchronous scanning method, an ultrasonic diagnosis double-signal synchronous scanning system and a storage medium.
Background
Ultrasonic imaging is one of the most widely used diagnostic tools in clinic because of its advantages of non-invasiveness, real-time, convenient operation, low price, etc. Of these, pulse Doppler (PulseWave Doppler, PW) and Tissue Doppler (TD) are important functions in ultrasound systems. They are based on the ultrasonic doppler technique, which determines the direction and speed of movement of the target object by the difference between the receiving frequency and the transmitting frequency.
PW can detect the distribution of blood flow velocity in a target region, TD can detect the distribution of tissue movement velocity in a target region, and the velocity distribution curves of blood flow and tissue are important means and reference bases for clinical diagnosis, especially in cardiac examination. Such as: PW can record blood flow movement information of the heart mitral valve, TD can record tissue movement information of the annulus of the heart mitral valve, and the two parameters in a conventional ultrasonic system can only be measured at different moments respectively. The heart rate and the heart cycle length may be different at different times, and thus may interfere with the blood flow and the detection result of the mitral valve of the heart due to the heart rate performance at different times.
Disclosure of Invention
The invention aims to provide an ultrasonic diagnosis double-signal synchronous scanning method, an ultrasonic diagnosis double-signal synchronous scanning system and a storage medium, which are used for solving the problem that in the prior art, double-signal speed detection of ultrasonic diagnosis can only be measured at different moments, so that heart rate performance at different moments causes interference to a heart mitral valve detection result.
In order to achieve one of the above objects, an embodiment of the present invention provides an ultrasonic diagnosis dual-signal synchronous scanning method, including: transmitting an ultrasonic pulse for scanning a first signal of a first target location and a second signal of a second target location, the first signal characterized by blood flow information or tissue information, the second signal characterized by blood flow information or tissue information; receiving an echo signal returned based on the ultrasonic pulse, wherein the echo signal comprises a first signal and a second signal; preprocessing the echo signals according to a preset sampling rate to separate the first signals and the second signals and respectively obtain synchronous first signal speed information and second signal speed information.
As a further improvement of the present invention, the method further comprises: the "transmitting ultrasonic pulse" specifically includes: presetting a first path and a second path; based on the transmitted signals, the ultrasonic pulses are scanned along a first path in which echo signals of the first signal are acquired and a second path in which echo signals of the second signal are acquired.
As a further improvement of the present invention, the method further comprises: the "transmitting ultrasonic pulses" further includes disposing a first sampling gate in the first path and a second sampling gate in the second path; the positions of the first sampling gate and the second sampling gate are adjusted in real time, and the first sampling gate and the second sampling gate are monitored so that the first sampling gate and the second sampling gate are positioned in a preset target area; and acquiring the echo signals in the target area through the first sampling gate and the second sampling gate.
As a further improvement of the present invention, the method further comprises: the specific mode of ultrasonic pulse scanning of the first signal and the second signal comprises parallel scanning, diffusion wave scanning and plane wave scanning technology.
As a further improvement of the present invention, the method further comprises: the pretreatment comprises the following steps: filtering the echo signals returned by the first path to eliminate signals outside a preset frequency; and filtering the echo signal returned by the second path to eliminate signals outside the preset frequency.
As a further improvement of the present invention, the method further comprises: the preprocessing further includes performing fourier transform processing on the separated first signal information and second signal information to obtain frequency shift parameters.
As a further improvement of the present invention, the method further comprises: the "obtaining the synchronized first signal speed information and second signal speed information" includes: presetting a first sampling rate and a second sampling rate; obtaining a first orthogonal signal through filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal; obtaining a second orthogonal signal through filtering at the second sampling rate and obtaining a frequency shift parameter in the Fourier transform based on the second orthogonal signal; the second orthogonal signal is different from the first orthogonal signal; and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
As a further improvement of the present invention, the method further comprises: the Doppler speed information algorithm is as follows:
wherein: Δf is the frequency shift (receiving frequency-transmitting frequency), c represents the speed of sound, f 0 Represents the emission frequency, θ represents the angle between the emission sound velocity and the blood flow direction, f s Is the sampling rate, the pulse repetition frequency (Pulse Repeat Frequence, PRF) in pulse doppler and tissue doppler scanning is equal to that of ultrasound scanning.
The invention also provides an ultrasonic diagnosis double-signal synchronous scanning system, which comprises a memory and a processor, wherein the memory stores a computer program which can run on the processor, and the steps in the ultrasonic diagnosis double-signal synchronous scanning method are realized when the program is executed on the processor.
The present invention also provides a storage medium storing a computer program which, when executed by a processor, implements the steps in the ultrasonic diagnostic two-signal synchronous scanning method as set forth in any one of the above.
Compared with the prior art, the invention has the following beneficial effects: the invention can synchronously detect the speed parameters of blood flow information and the speed parameters of tissue information at different positions in real time, so that the result is more reliable and accurate. Synchronous detection of blood flow velocity information and tissue velocity information has a very reference significance for diagnosis of some diseases; simultaneously, the system can also realize simultaneous observation of the speeds of blood flow movement or tissue movement at different positions.
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Fig. 1 is a flowchart of an ultrasonic diagnosis dual-signal synchronous scanning method in an embodiment of the present invention.
Fig. 2 is a flowchart of acquiring speed information for a first signal and a second signal synchronously in an embodiment of the invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
Referring to fig. 1, in an embodiment of the present invention, a dual-signal synchronous scanning method for ultrasonic diagnosis is provided. The ultrasonic diagnosis double-signal synchronous scanning method is used for scanning blood flow information and tissue information in an ultrasonic imaging technology so as to obtain blood flow speed information and tissue speed information. The heart rate and heart cycle length are thus acquired so that a detection analysis of the heart can be performed. The ultrasonic diagnosis double-signal synchronous scanning method comprises the following steps:
s1: an ultrasonic pulse is transmitted for scanning a first signal at a first target location characterized by blood flow information or tissue information and a second signal at a second target location characterized by blood flow information or tissue information.
S2: and receiving an echo signal returned based on the ultrasonic pulse, wherein the echo signal comprises a first signal and a second signal.
S3: preprocessing the echo signals according to a preset sampling rate to separate the first signals and the second signals and respectively obtain synchronous first signal speed information and second signal speed information.
In this way, the signals are preprocessed, separated and calculated and analyzed through the preset sampling rate, so that the first signal information and the second signal information in the echo signals can be separated, and independent processing is carried out according to different sampling rates to obtain synchronous speed information respectively; and then according to the speed parameter of the blood flow information and the speed parameter of the tissue information at the same moment of real-time and synchronous detection, the result is more reliable and accurate, and the method has more reference significance for diagnosis of some diseases.
The preset sampling rate can be respectively preset to different sampling rates according to blood flow information and tissue information, and specifically, the blood flow information has a large frequency offset, so that the blood flow information needs a large sampling rate to achieve better display speed; because of the small frequency of the tissue information, a small sampling rate is required for better display speed.
In an example of the foregoing embodiment, the ultrasonic pulse is used to scan a first signal of the first target location and a second signal of the second target location, and both the first signal and the second signal may be blood flow information. That is, blood flow information of the first target position and the second target position can be obtained by the ultrasonic pulse.
Thus, by analyzing and calculating the blood flow information of the first target position and the second target position, the synchronous blood flow movement speeds of different positions can be obtained at the same time.
In an example of the foregoing embodiment, the ultrasonic pulse is used to scan a first signal of the first target location and a second signal of the second target location, and both the first signal and the second signal may be blood flow information. That is, tissue information of the first target position and the second target position can be obtained by the ultrasonic pulse.
Thus, by analyzing and calculating the blood flow information of the first target position and the second target position, the synchronous tissue movement speeds of different positions can be obtained at the same time.
In an example of the above embodiment, the ultrasonic pulse is used to scan a first signal of a first target location and a second signal of a second target location, the first signal being characterized by blood flow information and the second signal being characterized by tissue information. That is, blood flow information at a first target location and tissue information at a second target location can be obtained by ultrasonic pulses.
Thus, by analyzing and calculating the blood flow information of the first target position and the second target position, the synchronous tissue movement speed and the blood flow movement speed at different positions can be obtained at the same time.
Specifically, the specific mode of scanning the first signal and the second signal by the ultrasonic pulse comprises parallel scanning, diffusion wave scanning and plane wave scanning technologies.
Further, the preset sampling rate is combined in the preprocessing of the echo signal, so that demodulation filtering separation of the echo signal and control of the sampling rate are synchronously performed, blood flow and tissue information at different positions can be synchronously obtained based on the demodulation filtering separation, two blood flow information at different positions can be synchronously obtained, and two tissue information at different positions can be synchronously obtained.
In one embodiment of the present invention, the "transmitting ultrasonic pulse" specifically includes:
presetting a first path and a second path;
based on the transmitted signals, the ultrasonic pulses are scanned along a first path in which echo signals of the first signal are acquired and a second path in which echo signals of the second signal are acquired.
The transmitting signal is a control command for triggering the transmission of ultrasonic pulses.
In the above scheme, the first path is used for scanning a first target position; the second path is used for scanning a second target position; the first target position and the second target position may both scan blood flow information, may both scan tissue information, may be an ultrasonic pulse in a first path for scanning blood flow information, an ultrasonic pulse in a second path for scanning tissue information, or may be an ultrasonic pulse in a first path for scanning tissue information, and an ultrasonic pulse in a second path for scanning blood flow information.
Further, the blood flow information is scanned when the path is positioned at the blood vessel, the tissue information is scanned when the path is positioned at the tissue, and the echo signals of the ultrasonic pulses are obtained through scanning so as to process and analyze.
By arranging the first path and the second path, blood vessel information and tissue information can be detected, and the combination of the two information is convenient for knowing the pathological condition of the heart.
Further, the "transmitting the ultrasonic pulse" further includes disposing a first sampling gate in the first path and disposing a second sampling gate in the second path.
And adjusting the positions of the first sampling gate and the second sampling gate in real time, and monitoring the first sampling gate and the second sampling gate so as to enable the first sampling gate and the second sampling gate to be positioned in a preset target area.
And acquiring the echo signals in the target area through the first sampling gate and the second sampling gate.
The sampling gate is arranged, and the ultrasonic pulse can accurately acquire blood flow velocity information and tissue velocity information or blood flow velocity information at different positions or tissue velocity information at different positions when scanning along the first path and the second path. And the positions of the first sampling gate and the second sampling gate in a preset target area can be adjusted, so that the acquired blood flow velocity information and tissue velocity information are clearer and more accurate.
In one embodiment of the present invention, the preprocessing includes:
filtering the echo signals returned by the first path to eliminate signals outside a preset frequency; and filtering the echo signal returned by the second path to eliminate signals outside the preset frequency.
In one embodiment, the echo signal returned by the first path is subjected to low-pass filtering to eliminate signals with a frequency greater than a preset frequency; and carrying out low-pass filtering on the echo signals returned by the second path to eliminate signals with frequencies larger than a preset frequency.
Thus, the first path and the second path return the tissue information, and the speed of the tissue information at the same time at different positions can be detected.
In another embodiment, the echo signal returned by the first path is subjected to high-pass filtering to eliminate signals smaller than a preset frequency; and carrying out high-pass filtering on the echo signals returned by the second path to eliminate signals smaller than a preset frequency.
Thus, the blood flow information returned by the first path and the second path can be detected, and the blood flow velocity information at the same time can be detected at different positions.
In another embodiment, the echo signal returned by the first path is subjected to high-pass filtering to eliminate signals smaller than a preset frequency; and carrying out low-pass filtering on the echo signals returned by the second path to eliminate signals with frequencies larger than a preset frequency.
Thus, the second signal can be eliminated when the echo signal is subjected to high-pass filtering so as to filter out the blood flow information of the first signal, and the first signal can be eliminated when the echo signal is subjected to low-pass filtering so as to filter out the tissue information of the second signal. Thereby respectively acquiring blood flow velocity information and tissue velocity information at the same time from different positions
Further, the preprocessing further comprises fourier transform processing of the separated first signal information and second signal information to obtain frequency shift parameters.
Thus, by obtaining the corresponding frequency shift parameter and frequency shift corresponding speed, the speed of the target object can be obtained.
Referring to fig. 2, in an embodiment of the present invention, the "obtaining the synchronized first signal speed information and second signal speed information" includes:
s3.1: the first sampling rate and the second sampling rate are preset.
S3.2: obtaining a first orthogonal signal through filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal;
and obtaining a second orthogonal signal through filtering at the second sampling rate and obtaining a frequency shift parameter in the Fourier transform based on the second orthogonal signal.
S3.3: and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
In this way, the speed information of the synchronized first signal and the speed information of the second signal can be acquired based on setting different or same sampling rates, and blood flow information or tissue information can be obtained by changing a preset sampling rate and changing a filtering manner.
The "frequency shift parameter when the first orthogonal signal is obtained by filtering at the first sampling rate and the fourier transform is obtained based on the first orthogonal signal" and the "frequency shift parameter when the second orthogonal signal is obtained by filtering at the second sampling rate and the fourier transform is obtained based on the second orthogonal signal" are performed synchronously.
In one example of this embodiment:
s3.1: presetting the same first sampling rate and second sampling rate;
s3.2: obtaining a first orthogonal signal through high-pass filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal;
and obtaining a second orthogonal signal through high-pass filtering at the second sampling rate and obtaining a frequency shift parameter during Fourier transformation based on the second orthogonal signal.
The orthogonal signals obtained by the first sampling rate and the second sampling rate are all blood flow information, and frequency shift parameters of the blood flow information are obtained based on fourier transform.
S3.3: and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
The first signal is the blood flow information of the first target position, and the second signal is the blood flow information of the second target position, so that the speed information of the blood flow information of different positions can be obtained.
In one example of this embodiment:
s3.1: presetting the same first sampling rate and second sampling rate;
s3.2: obtaining a first orthogonal signal through low-pass filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal;
and obtaining a second orthogonal signal through low-pass filtering at the second sampling rate and obtaining a frequency shift parameter during Fourier transformation based on the second orthogonal signal.
It should be noted that, the orthogonal signals obtained by the first sampling rate and the second sampling rate are all tissue information, and the frequency shift parameter of the tissue information is obtained based on fourier transform.
S3.3: and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
The first signal is the organization information of the first target position, and the second signal is the organization information of the second target position, so that the speed information of the organization information of different positions can be obtained.
In one example of this embodiment:
s3.1: a first sampling rate and a second sampling rate are preset, wherein the first sampling rate is larger than the second sampling rate.
S3.2: obtaining a first orthogonal signal through high-pass filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal;
obtaining a second orthogonal signal through low-pass filtering at the second sampling rate and obtaining a frequency shift parameter in the Fourier transform based on the second orthogonal signal; the second orthogonal signal is different from the first orthogonal signal.
S3.3: and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
In the above scheme, the first sampling rate is greater than the second sampling rate, so that different frequency shift parameters can be obtained based on the difference of the sampling rates, and synchronous speed information is obtained according to a doppler speed information algorithm of the frequency shift parameters and the motion speed relation.
In another embodiment, the first sampling rate may be preset to sample the first signal, and the second signal may be sampled in a manner of reducing the first sampling rate directly because the second sampling rate of the second signal is low when the second signal is sampled and filtered; meanwhile, the data of sampling the second signal by adopting the first sampling rate can be reserved, so that the second signal is subjected to downsampling in the slow time direction; another way is to not downsample the second signal in the slow time direction. In this way, multiple types of speed information can be obtained.
The Doppler speed information algorithm is as follows:
wherein: Δf is the frequency shift (receiving frequency-transmitting frequency), c represents the speed of sound, f 0 Represents the emission frequency, θ represents the angle between the emission sound velocity and the blood flow direction, f s Is a preset sampling rate, a pulse repetition frequency (Pulse Repeat Frequence, PRF) that is equivalent to ultrasound scanning in pulse doppler and tissue doppler scanning.
In the doppler velocity information algorithm, according to the relationship between the frequency shift parameter and the preset sampling rate, the magnitude of the frequency shift parameter can be indirectly affected by the preset sampling rate, and two pieces of synchronous velocity information can be obtained according to the frequency shift parameters with different magnitudes by using a calculation formula of the frequency shift parameter and the velocity.
It can be seen that when the first signal is characterized as the velocity information of the blood flow information and the second signal is characterized as the velocity information of the tissue information, the frequency parameters obtained by the two signals when fourier transforming can be indirectly adjusted based on the adjustment of the sampling rates of the two signals, so that the synchronous velocity information is obtained through the calculation of the doppler velocity information algorithm.
In an embodiment of the present invention, a system for synchronous scanning of dual signals for basic ultrasonic diagnosis is further provided, which includes a memory and a processor, where the memory stores a computer program that can run on the processor, and the processor implements the steps in the method for synchronous scanning of dual signals for ultrasonic diagnosis in any one of the above embodiments when executing the program on the processor.
Wherein the dual signal may be two blood flow information or two tissue information; one may be blood flow information and one may be tissue information.
In an embodiment of the present invention, there is further provided a storage medium storing a computer program, where the computer program when executed by a processor implements the steps in the ultrasound diagnosis dual signal synchronous scanning method in any one of the above embodiments.
In summary, the invention scans the first signal and the second signal by the ultrasonic pulse technique and returns the echo signal of the pulse, and separates the first signal and the second signal by demodulation filtering and fourier transformation of the echo signal; specifically, echo signals are respectively filtered by adopting a preset sampling rate, frequency shift parameters obtained in Fourier transformation can be indirectly influenced when separated first signals and second signals are obtained, and speed signals are obtained based on frequency shift parameter calculation.
The above-described filtering processes for the first signal and the second signal are performed simultaneously. Therefore, the calculation of the speed information is indirectly influenced through the preset sampling rate, and the speed parameters of blood flow information and the speed parameters of tissue information at different positions can be synchronously detected in real time; the speed parameters of two pieces of blood flow information at different positions can be synchronously detected in real time; the speed parameters of two organization information at different positions can be synchronously detected in real time, so that the result is more reliable and accurate.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, system and module may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In the several embodiments provided in this application, it should be understood that the disclosed systems, and methods may be implemented in other ways. For example, the system embodiments described above are merely illustrative, e.g., the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with respect to each other may be through some interface, indirect coupling or communication connection of systems or modules, electrical, mechanical, or other form. The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or 2 or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in hardware plus software functional modules. The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional modules described above are stored in a storage medium and include instructions for causing a computer system (which may be a personal computer, a server, or a network system, etc.) or processor (processor) to perform some of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An ultrasonic diagnosis double-signal synchronous scanning method is characterized by comprising the following steps:
transmitting an ultrasonic pulse for scanning a first signal of a first target location and a second signal of a second target location, the first signal characterized by blood flow information or tissue information, the second signal characterized by blood flow information or tissue information;
receiving an echo signal returned based on the ultrasonic pulse, wherein the echo signal comprises a first signal and a second signal;
preprocessing the echo signals according to a preset sampling rate to separate the first signals and the second signals and respectively obtain synchronous first signal speed information and second signal speed information.
2. The ultrasonic diagnostic dual signal simultaneous scanning method according to claim 1, wherein said "transmitting ultrasonic pulses" specifically comprises:
presetting a first path and a second path;
based on the transmitted signals, the ultrasonic pulses are scanned along a first path in which echo signals of the first signal are acquired and a second path in which echo signals of the second signal are acquired.
3. The ultrasonic diagnostic dual signal synchronous scanning method of claim 2, wherein said transmitting ultrasonic pulses further comprises disposing a first sampling gate in said first path and a second sampling gate in said second path;
the positions of the first sampling gate and the second sampling gate are adjusted in real time, and the first sampling gate and the second sampling gate are monitored so that the first sampling gate and the second sampling gate are positioned in a preset target area;
and acquiring the echo signals in the target area through the first sampling gate and the second sampling gate.
4. The ultrasonic diagnostic dual signal simultaneous scanning method of claim 1, wherein the specific manner in which the ultrasonic pulses scan the first signal and the second signal comprises parallel scanning, diffuse wave scanning and plane wave scanning techniques.
5. The ultrasonic diagnostic dual signal simultaneous scanning method of claim 2, wherein said preprocessing comprises:
filtering the echo signals returned by the first path to eliminate signals outside a preset frequency;
and filtering the echo signal returned by the second path to eliminate signals outside the preset frequency.
6. The ultrasonic diagnostic dual signal simultaneous scanning method of claim 5, wherein the preprocessing further comprises fourier transforming the separated first signal information and second signal information to obtain frequency shift parameters.
7. The ultrasonic diagnostic dual signal simultaneous scanning method of claim 6, wherein said obtaining synchronized first signal speed information and second signal speed information comprises:
presetting a first sampling rate and a second sampling rate;
obtaining a first orthogonal signal through filtering at the first sampling rate and obtaining a frequency shift parameter during Fourier transform based on the first orthogonal signal;
obtaining a second orthogonal signal through filtering at the second sampling rate and obtaining a frequency shift parameter in the Fourier transform based on the second orthogonal signal;
and respectively calculating the speed information of the first signal and the speed information of the second signal through the obtained frequency shift parameters based on a Doppler speed information algorithm.
8. The ultrasonic diagnostic dual-signal synchronous scanning method of claim 6, wherein the doppler velocity information algorithm is:
wherein: Δf is the frequency shift (receiving frequency-transmitting frequency), c represents the speed of sound, f 0 Represents the emission frequency, θ represents the angle between the emission sound velocity and the blood flow direction, f s Is a preset sampling rate, a pulse repetition frequency (Pulse Repeat Frequence, PRF) that is equivalent to ultrasound scanning in pulse doppler and tissue doppler scanning.
9. An ultrasonic diagnosis double-signal synchronous scanning system comprising a memory and a processor, wherein the memory stores a computer program which can run on the processor, and the steps in the ultrasonic diagnosis double-signal synchronous scanning method are realized when the program is executed on the processor.
10. A storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the diagnostic ultrasound dual signal synchronous scanning method of any one of claims 1 to 8.
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