A Doppler spectral imaging method, device, and storage medium

Abstract

An embodiment of the present invention discloses a Doppler spectral imaging method, device, and storage medium. The method may include: acquiring a sampling gate position; transmitting ultrasonic waves to a target area including the sampling gate position and receiving the echoes of the ultrasonic waves to obtain ultrasonic echo signals; obtaining a plurality of receiving lines based on the ultrasonic echo signals, where the plurality of receiving lines have different deflection angles; combining the plurality of receiving lines to obtain a target receiving line; obtaining Doppler spectral information at the sampling gate position based on the target receiving line; and outputting the Doppler spectral information.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of ultrasonic imaging, and in particular, to a Doppler spectral imaging method, apparatus, and storage medium. Background Art

[0002] Spectral Doppler in the cardiac mode includes two modes: continuous wave Doppler and pulsed wave Doppler. What doctors are most concerned about is obtaining the regurgitation spectrum.

[0003] When a doctor finds regurgitation in the color image during a cardiac examination and starts the spectral mode, the doctor adjusts the receiving line position and sampling gate position by moving the trackball based on long-term accumulated experience. If the spectrum and sound can appear stably, the doctor freezes and measures to complete the spectral examination. However, due to the movement of the heart itself, even if the patient holds their breath, the heart will rotate, contract and squeeze, twist, and pulsate on its own. This causes the actual valve position where the previously located regurgitation appears to change, and the sampling gate position determined based on the previous valve regurgitation position will deviate from the true valve regurgitation position. When the spectral mode is started at this time, the spectrum and sound cannot appear stably and clearly, and the doctor needs to return to the color mode and re-visualize the regurgitation position, adjust the receiving line and sampling gate positions. This leads to low accuracy of Doppler spectral imaging and poor spectrum availability. Summary of the Invention

[0004] To solve the above technical problems, embodiments of the present invention are expected to provide a Doppler spectral imaging method, apparatus, and storage medium that can improve the accuracy of Doppler spectral imaging and spectrum availability.

[0005] The technical solution of the embodiments of the present invention can be implemented as follows:

[0006] Embodiments of the present invention provide a continuous wave Doppler spectral imaging method, the method including:

[0007] Obtain the sampling gate position;

[0008] Transmit ultrasonic waves to a target area including the sampling gate position, and receive the echoes of the ultrasonic waves to obtain ultrasonic echo signals;

[0009] Obtain multiple receiving lines according to the ultrasonic echo signals, where the multiple receiving lines have different deflection angles;

[0010] Merge the multiple receiving lines to obtain a target receiving line;

[0011] Obtain Doppler spectral information at the sampling gate position according to the target receiving line;

[0012] Output the Doppler spectral information.

[0013] In the above method, the merging of the multiple receiving lines to obtain a target receiving line includes:

[0014] Performing signal accumulation on the multiple receiving lines to obtain the target receiving line.

[0015] In the above method, the merging of the multiple receiving lines to obtain a target receiving line includes:

[0016] Respectively obtaining multiple energy values corresponding to the multiple receiving lines;

[0017] Determining a first energy value with the largest energy value from the multiple energy values;

[0018] Determining the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

[0019] In the above method, the merging of the multiple receiving lines to obtain a target receiving line includes:

[0020] Respectively obtaining multiple energy values corresponding to the multiple receiving lines;

[0021] Allocating multiple weight values to the multiple receiving lines according to the multiple energy values;

[0022] Performing weighted accumulation on the multiple receiving lines according to the multiple weight values to obtain the target receiving line.

[0023] An embodiment of the present invention provides a continuous wave Doppler spectral imaging method, and the method includes:

[0024] Obtaining a sampling gate position;

[0025] Transmitting ultrasonic waves to a target area including the sampling gate position and receiving echoes of the ultrasonic waves to obtain an ultrasonic echo signal;

[0026] Obtaining multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles;

[0027] Respectively obtaining Doppler spectral information at positions corresponding to each receiving line according to the multiple receiving lines;

[0028] Respectively outputting the Doppler spectral information at positions corresponding to each receiving line.

[0029] An embodiment of the present invention provides a Doppler spectral imaging method, and the method includes:

[0030] Obtaining a sampling gate position;

[0031] Transmit ultrasonic waves to a target area including the sampling gate position, and receive the echoes of the ultrasonic waves to obtain an ultrasonic echo signal;

[0032] Obtain multiple receiving lines based on the ultrasonic echo signal, where the multiple receiving lines have different deflection angles;

[0033] Merge the multiple receiving lines to obtain a target receiving line;

[0034] Obtain Doppler spectrum information at the sampling gate position based on the target receiving line;

[0035] Output the Doppler spectrum information.

[0036] An embodiment of the present invention provides a Doppler spectrum imaging method, and the method includes:

[0037] Obtain the sampling gate position;

[0038] Transmit ultrasonic waves to a target area including the sampling gate position, and receive the echoes of the ultrasonic waves to obtain an ultrasonic echo signal;

[0039] Obtain multiple receiving lines based on the ultrasonic echo signal, where the multiple receiving lines have different deflection angles;

[0040] Obtain Doppler spectrum information at the position corresponding to each receiving line based on the multiple receiving lines;

[0041] Output the Doppler spectrum information at the position corresponding to each receiving line respectively.

[0042] An embodiment of the present invention provides a continuous wave Doppler spectrum imaging device, and the continuous wave Doppler spectrum imaging device includes:

[0043] An ultrasonic probe;

[0044] A transmitting circuit that excites the ultrasonic probe to transmit ultrasonic waves to a target area including the sampling gate position;

[0045] A receiving circuit that receives ultrasonic echoes returning from the target area through the ultrasonic probe;

[0046] A processor that processes the ultrasonic echoes to obtain Doppler spectrum information of the target area;

[0047] A display that displays the Doppler spectrum information;

[0048] The processor specifically performs the following steps: obtaining a sampling gate position, obtaining a plurality of receiving lines according to the ultrasonic echo signal, wherein the plurality of receiving lines have different deflection angles; merging the plurality of receiving lines to obtain a target receiving line; obtaining Doppler spectrum information at the sampling gate position according to the target receiving line; and outputting the Doppler spectrum information.

[0049] In the above device, the processor is further used to accumulate signals of the multiple receiving lines to obtain the target receiving line.

[0050] In the above-mentioned device, the processor is also used to respectively obtain multiple energy values ​​corresponding to the multiple receiving lines; determine a first energy value with the largest energy value from the multiple energy values; and determine a first receiving line corresponding to the first energy value as the target receiving line, the first receiving line being the receiving line corresponding to the first energy value among the multiple receiving lines.

[0051] In the above device, the processor is also used to respectively obtain multiple energy values ​​corresponding to the multiple receiving lines; assign multiple weight values ​​to the multiple receiving lines according to the multiple energy values; and perform weighted accumulation on the multiple receiving lines according to the multiple weight values ​​to obtain the target receiving line.

[0052] An embodiment of the present invention provides a continuous wave Doppler spectrum imaging device, the continuous wave Doppler spectrum imaging device comprising:

[0053] Ultrasound probe;

[0054] a transmitting circuit, wherein the transmitting circuit excites the ultrasonic probe to transmit ultrasonic waves toward a target area including a sampling gate position;

[0055] a receiving circuit, wherein the receiving circuit receives an ultrasonic echo returned from the target area through the ultrasonic probe;

[0056] a processor, wherein the processor processes the ultrasonic echo to obtain Doppler spectrum information of the target area;

[0057] A display, wherein the display displays the Doppler spectrum information;

[0058] The processor specifically performs the following steps: obtaining a sampling gate position; obtaining a plurality of receiving lines according to the ultrasonic echo signal, wherein the plurality of receiving lines have different deflection angles; obtaining Doppler spectrum information at a position corresponding to each receiving line according to the plurality of receiving lines; and outputting the Doppler spectrum information at a position corresponding to each receiving line.

[0059] An embodiment of the present invention provides a Doppler spectrum imaging device, the Doppler spectrum imaging device comprising:

[0060] Ultrasonic probe;

[0061] A transmitting circuit that excites the ultrasonic probe to transmit ultrasonic waves to a target area including a sampling gate position;

[0062] A receiving circuit that receives ultrasonic echoes returned from the target area through the ultrasonic probe;

[0063] A processor that processes the ultrasonic echoes to obtain Doppler spectral information of the target area;

[0064] A display that displays the Doppler spectral information;

[0065] Wherein, the processor specifically performs the following steps: obtaining the sampling gate position, obtaining a plurality of receiving lines according to the ultrasonic echo signal, wherein the plurality of receiving lines have different deflection angles; combining the plurality of receiving lines to obtain a target receiving line; obtaining the Doppler spectral information at the sampling gate position according to the target receiving line; outputting the Doppler spectral information.

[0066] An embodiment of the present invention provides a Doppler spectral imaging device, and the Doppler spectral imaging device includes:

[0067] Ultrasonic probe;

[0068] A transmitting circuit that excites the ultrasonic probe to transmit ultrasonic waves to a target area including a sampling gate position;

[0069] A receiving circuit that receives ultrasonic echoes returned from the target area through the ultrasonic probe;

[0070] A processor that processes the ultrasonic echoes to obtain Doppler spectral information of the target area;

[0071] A display that displays the Doppler spectral information;

[0072] Wherein, the processor specifically performs the following steps: obtaining the sampling gate position; obtaining a plurality of receiving lines according to the ultrasonic echo signal, wherein the plurality of receiving lines have different deflection angles; obtaining the Doppler spectral information at the position corresponding to each receiving line according to the plurality of receiving lines; respectively outputting the Doppler spectral information at the position corresponding to each receiving line.

[0073] An embodiment of the present invention provides a storage medium, and the storage medium stores a computer program, and the computer program can be executed by a processor to implement the Doppler spectral imaging method described in any one of the above.

[0074] An embodiment of the present invention provides a Doppler spectral imaging method, an apparatus, and a storage medium. The method includes: obtaining a sampling gate position; transmitting ultrasonic waves to a target area including the sampling gate position and receiving the echoes of the ultrasonic waves to obtain ultrasonic echo signals; obtaining a plurality of receiving lines according to the ultrasonic echo signals, where the plurality of receiving lines have different deflection angles; combining the plurality of receiving lines to obtain a target receiving line; obtaining Doppler spectral information at the sampling gate position according to the target receiving line; and outputting the Doppler spectral information. By adopting the above solution, when the Doppler imaging apparatus transmits ultrasonic waves to the target area including the sampling gate position once, it can obtain a plurality of receiving lines with different deflection angles, and the plurality of receiving lines cover the entire target area. When the regurgitation position moves in the target area, the Doppler imaging apparatus can obtain the Doppler spectral information of the regurgitation position through one transmission, thereby improving the accuracy and spectral availability of Doppler spectral imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 is a flowchart of a continuous wave Doppler spectral imaging method provided by an embodiment of the present invention Figure 1 ;

[0076] Figure 2 is a schematic diagram of the module composition of an exemplary continuous wave Doppler spectral imaging apparatus / Doppler spectral imaging apparatus provided by an embodiment of the present invention;

[0077] Figure 3 is a schematic diagram of signal processing of an exemplary continuous wave Doppler spectral imaging provided by an embodiment of the present invention;

[0078] Figure 4 is a schematic diagram of receiving lines for performing Doppler spectral imaging on the left ventricle of the heart provided by an embodiment of the present invention;

[0079] Figure 5 is a flowchart of a continuous wave Doppler spectral imaging method provided by an embodiment of the present invention Figure 2 ;

[0080] Figure 6 is a flowchart of a Doppler spectral imaging method provided by an embodiment of the present invention Figure 1 ;

[0081] Figure 7 is a flowchart of a Doppler spectral imaging method provided by an embodiment of the present invention Figure 2 ;

[0082] Figure 8 is a schematic structural diagram of a Doppler spectral imaging apparatus 1 provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0083] In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not used to limit the embodiments of the present invention.

[0084] An embodiment of the present invention provides a continuous wave Doppler spectral imaging method, as Figure 1 shown, the method may include:

[0085] S101. Obtain the sampling gate position.

[0086] The continuous wave Doppler spectral imaging method provided by the embodiment of the present invention is applicable to the scenario of capturing the reflux spectrum in the spectral Doppler mode.

[0087] In the embodiment of the present invention, when a reflux spectrum is detected in the color image of a cardiac examination, the spectral Doppler mode is started. At this time, the continuous wave Doppler spectral imaging device obtains the sampling gate position.

[0088] In the embodiment of the present invention, the sampling gate position can be set by the user through the user interface, for example, by moving the trackball to determine the sampling gate position; it can also be automatically determined by the continuous wave Doppler spectral imaging device by processing the obtained B-image or C-image, and specific selection is made according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0089] S102. Transmit ultrasonic waves to the target area including the sampling gate position, and receive the echoes of the ultrasonic waves to obtain ultrasonic echo signals.

[0090] After the continuous wave Doppler spectral imaging device obtains the sampling gate position, the continuous wave Doppler spectral imaging device transmits ultrasonic waves to the target area including the sampling gate position, and receives the echoes of the ultrasonic waves to obtain ultrasonic echo signals.

[0091] In the embodiment of the present invention, the continuous wave Doppler spectral imaging device determines the target area according to the determined sampling gate position. Then, the continuous wave Doppler spectral imaging device transmits ultrasonic waves to the target area. After the ultrasonic waves contact the target tissue in the target area, the echoes of the ultrasonic waves return. At this time, the continuous wave Doppler spectral imaging device obtains the ultrasonic echo signals.

[0092] S103. Obtain multiple receiving lines according to the ultrasonic echo signals, where the multiple receiving lines have different deflection angles.

[0093] After the continuous wave Doppler spectral imaging device obtains the ultrasonic echo signals, the continuous wave Doppler spectral imaging device obtains multiple receiving lines with different deflection angles according to the ultrasonic echo signals.

[0094] In an embodiment of the present invention, a continuous wave Doppler spectral imaging device performs beam synthesis on ultrasonic echoes to obtain multiple receiving lines.

[0095] In an embodiment of the present invention, in the continuous wave spectral mode, the continuous wave Doppler spectral imaging device determines multiple mixing clocks corresponding to multiple receiving beams according to a preset sampling position in a target area, and then, according to the multiple mixing clocks, performs time delay and accumulation processing on the ultrasonic echoes respectively to obtain multiple receiving lines.

[0096] In an embodiment of the present invention, after the continuous wave Doppler spectral imaging device performs beam synthesis on the ultrasonic echo signal to obtain an analog signal, the analog signal is first converted into a digital signal by an analog-to-digital converter. Then, as Figure 2 shown, the continuous wave Doppler spectral imaging device performs digital signal processing on the digital signal, where the digital signal processing includes: demodulation, range accumulation, and wall filtering, to obtain multiple receiving lines. Specifically, range accumulation and wall filtering need to be performed on each receiving line separately.

[0097] In an embodiment of the present invention, for the position distribution of multiple receiving lines, one of them can be set at a position coinciding with the sampling gate position, and the remaining receiving lines can be set near the sampling gate position respectively, for example, on one side or both sides of the sampling gate position; or multiple receiving lines can be set near the sampling gate position and not coincide with the sampling gate position. Specifically, it is selected according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0098] In an embodiment of the present invention, multiple receiving lines have different deflection angles with respect to the normal of the probe element plane, that is, the multiple receiving lines are received by the probe elements at different deflection angles.

[0099] Exemplarily, as Figure 3 shown, it is a schematic diagram of a continuous wave Doppler spectral imaging device generating 3 adjacent receiving lines simultaneously in one transmission. Each receiving line provides a corresponding mixing clock for the mixer according to the sampling gate position. The continuous wave Doppler spectral imaging device uses 3 mixing clocks to complete the corresponding time delay and accumulation. Thus, the continuous wave Doppler spectral imaging device realizes generating 3 adjacent receiving lines simultaneously in one transmission according to the time delay and accumulation of 3 mixing clocks. Among them, the number of array elements participating in reception in the continuous wave Doppler spectral imaging device is 32. For each receiving line, when 32 array elements receive ultrasonic echoes, the 32 ultrasonic echoes corresponding to the 32 array elements are sequentially output to a low-noise amplifier and a mixer, and then, after fixed-gain amplification, they are accumulated and synthesized into one receiving line.

[0100] Exemplarily, in the spectral Doppler mode during heart detection, the continuous wave Doppler spectral imaging device determines the position of the sampling gate in the left ventricle of the heart, and determines the positions of three receiving lines based on the position of the sampling gate. Among them, the first receiving line is located on the left side of the sampling gate position, the second receiving line coincides with the sampling gate position, and the third receiving line is located on the right side of the sampling gate position. As Figure 4 shown, the continuous wave Doppler spectral imaging device emits an ultrasonic wave to the left ventricle of the heart once, generates three receiving line signals, and from Figure 4 it can be seen that when in the early stage of left ventricular systole of the heart, the regurgitation position coincides with the position of the second receiving line, and when in the late stage of left ventricular systole of the heart, the regurgitation position coincides with the position of the first receiving line. Thus, whether in the early stage of left ventricular systole or the late stage of left ventricular systole of the heart, the regurgitation position can be determined by emitting an ultrasonic wave once, and the regurgitation spectrum can be obtained from the regurgitation position, improving the spectral availability.

[0101] S104. Combine multiple receiving lines to obtain a target receiving line.

[0102] After the continuous wave Doppler spectral imaging device obtains multiple receiving lines with different deflection angles according to the ultrasonic echo signals, the continuous wave Doppler spectral imaging device combines the multiple receiving lines to obtain a target receiving line.

[0103] In the embodiment of the present invention, after the continuous wave Doppler spectral imaging device obtains multiple receiving lines, as Figure 2 shown, the continuous wave Doppler spectral imaging device performs signal synthesis on the multiple receiving lines to obtain a target receiving line. During the signal synthesis process, the method for the continuous wave Doppler spectral imaging device to combine multiple receiving lines may include at least the following four methods:

[0104] 1. The continuous wave Doppler spectral imaging device performs signal accumulation on the multiple receiving lines to obtain a target receiving line;

[0105] 2. The continuous wave Doppler spectral imaging device respectively obtains multiple energy values corresponding to the multiple receiving lines, determines the largest first energy value from the multiple energy values, and then determines the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines;

[0106] 3. The continuous wave Doppler spectral imaging device respectively obtains multiple energy values corresponding to the multiple receiving lines, assigns multiple weight values to the multiple receiving lines according to the multiple energy values, and then performs weighted accumulation on the multiple receiving lines according to the multiple weight values to obtain a target receiving line;

[0107] 4. The continuous wave Doppler spectral imaging device combines the multiple receiving lines by using other signal combination methods to obtain a target receiving line, and specifically selects according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0108] S105. Obtain the Doppler spectrum information at the sampling gate position according to the target receiving line.

[0109] After the continuous wave Doppler spectrum imaging device combines multiple receiving lines to obtain the target receiving line, the continuous wave Doppler spectrum imaging device obtains the Doppler spectrum information at the sampling gate position according to the target receiving line.

[0110] In the embodiments of the present invention, the Doppler spectrum information includes spectrum data and / or acoustic spectrum data, which is specifically selected according to the actual situation and is not specifically limited in the embodiments of the present invention.

[0111] In the embodiments of the present invention, after the continuous wave Doppler spectrum imaging device obtains the target receiving line, the continuous wave Doppler spectrum imaging device uses the target receiving line to calculate the spectrogram to obtain the spectrum data; determines the acoustic spectrum data from the target receiving line, and determines the spectrum data and / or the acoustic spectrum data as the Doppler spectrum information at the sampling gate position.

[0112] S106. Output the Doppler spectrum information.

[0113] After the continuous wave Doppler spectrum imaging device obtains the Doppler spectrum information at the sampling gate position according to the target receiving line, the continuous wave Doppler spectrum imaging device outputs the Doppler spectrum information.

[0114] In the embodiments of the present invention, the specific output manner of the continuous wave Doppler spectrum imaging device for outputting the Doppler spectrum information is as Figure 2 shown. For the spectrum data in the Doppler spectrum information, the continuous wave Doppler spectrum imaging device displays the spectrum data; for the acoustic spectrum data in the Doppler spectrum information, the continuous wave imaging device plays the acoustic spectrum data.

[0115] It can be understood that when the continuous wave Doppler imaging device emits an ultrasonic wave once to a target area including the sampling gate position, it can obtain multiple receiving lines with different deflection angles, and these multiple receiving lines cover the entire target area. When the regurgitation position moves in the target area, the continuous wave Doppler imaging device can obtain the Doppler spectrum information of the regurgitation position through one emission, thereby improving the accuracy and spectrum availability of the Doppler spectrum imaging.

[0116] An embodiment of the present invention provides a continuous wave Doppler spectrum imaging method, as Figure 5 shown, the method may include:

[0117] S201. The continuous wave Doppler spectrum imaging device obtains the sampling gate position.

[0118] Here, the description of S201 in the embodiments of the present invention is the same as that of S201, and will not be repeated here.

[0119] S202. The continuous wave Doppler spectral imaging device emits ultrasonic waves to a target area including the sampling gate position, receives the echoes of the ultrasonic waves, and obtains an ultrasonic echo signal.

[0120] Here, the description of S202 in the embodiments of the present invention is the same as that of S102, and will not be repeated here.

[0121] S203. The continuous wave Doppler spectral imaging device obtains multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles.

[0122] Here, the description of S203 in the embodiments of the present invention is the same as that of S103, and will not be repeated here.

[0123] S204. The continuous wave Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line according to the multiple receiving lines.

[0124] After the continuous wave Doppler spectral imaging device obtains multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles, the continuous wave Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line according to the multiple receiving lines.

[0125] In the embodiments of the present invention, the continuous wave Doppler spectral imaging device performs spectrogram calculation on each receiving line to obtain each spectral data corresponding to each receiving line; the continuous wave Doppler spectral imaging device respectively determines each spectrogram data corresponding to each receiving line from each receiving line, and each spectral data and / or each spectrogram data constitutes the Doppler spectral information corresponding to each receiving line.

[0126] S205. The continuous wave Doppler spectral imaging device respectively outputs the Doppler spectral information at the positions corresponding to each receiving line.

[0127] After the continuous wave Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line according to the multiple receiving lines, the continuous wave Doppler spectral imaging device respectively outputs the Doppler spectral information at the positions corresponding to each receiving line.

[0128] In the embodiments of the present invention, the continuous wave Doppler spectral imaging device respectively displays each spectral data at the positions corresponding to each receiving line, the continuous wave Doppler spectral imaging device respectively plays each spectrogram data at the positions corresponding to each receiving line, and medical staff analyze each spectral data and / or each spectrogram data corresponding to each receiving line to analyze the target receiving line corresponding to the regurgitation spectrum from the multiple receiving lines.

[0129] It is understandable that when a continuous wave Doppler imaging device emits an ultrasonic wave once to a target area including the sampling gate position, multiple receiving lines with different deflection angles can be obtained, and these multiple receiving lines cover the entire target area. When the reflux position moves in the target area, the continuous wave Doppler imaging device can obtain multiple Doppler spectrum information at multiple receiving line positions where the reflux position may appear in the target area. Thus, medical staff can determine the Doppler spectrum information of the reflux position from the multiple Doppler spectrum information, thereby improving the accuracy and spectrum availability of Doppler spectrum imaging.

[0130] An embodiment of the present invention provides a Doppler spectrum imaging method, as Figure 6 shown, the method may include:

[0131] S301. The Doppler spectrum imaging device acquires the sampling gate position.

[0132] A continuous wave Doppler spectrum imaging method provided by an embodiment of the present invention is applicable to the scenario of capturing a reflux spectrum in the spectral Doppler mode.

[0133] In an embodiment of the present invention, when a reflux spectrum is detected in the color image of a cardiac examination, the spectral Doppler mode is started. At this time, the Doppler spectrum imaging device acquires the sampling gate position.

[0134] In an embodiment of the present invention, the sampling gate position can be set by the user through a user interface, for example, by moving a trackball to determine the sampling gate position; or it can be automatically determined by the Doppler spectrum imaging device through processing the already obtained B image or C image, and specific selection is made according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0135] S302. The Doppler spectrum imaging device emits an ultrasonic wave to a target area including the sampling gate position and receives the echo of the ultrasonic wave to obtain an ultrasonic echo signal.

[0136] After the Doppler spectrum imaging device acquires the sampling gate position, the Doppler spectrum imaging device emits an ultrasonic wave to a target area including the sampling gate position and receives the echo of the ultrasonic wave to obtain an ultrasonic echo signal.

[0137] In an embodiment of the present invention, the Doppler spectrum imaging device determines the target area according to the determined sampling gate position. Then, the Doppler spectrum imaging device emits an ultrasonic wave to the target area. After the ultrasonic wave contacts the target tissue in the target area, the echo of the ultrasonic wave returns, and the Doppler spectrum imaging device acquires the ultrasonic echo signal at this time.

[0138] S303. The Doppler spectrum imaging device obtains multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles.

[0139] After the Doppler spectral imaging device obtains the ultrasonic echo signal, the Doppler spectral imaging device obtains multiple receiving lines with different deflection angles according to the ultrasonic echo signal.

[0140] In an embodiment of the present invention, the Doppler spectral imaging device performs beam synthesis on the ultrasonic echo to obtain multiple receiving lines.

[0141] In an embodiment of the present invention, the spectral Doppler mode includes a continuous wave spectral mode and a pulsed wave spectral mode. In different modes, the Doppler spectral imaging device performs beam synthesis on the ultrasonic echo signal in different ways to obtain multiple receiving lines. Specifically, in the continuous wave spectral mode, the continuous wave Doppler spectral imaging device determines multiple mixing clocks corresponding to multiple receiving beams according to a preset sampling position in the target area, and then, according to the multiple mixing clocks, performs time delay and accumulation processing on the ultrasonic echo respectively to obtain multiple receiving lines; in the pulsed wave spectral mode, the Doppler spectral imaging device performs analog-to-digital conversion on the ultrasonic echo to obtain a digital beam, and then, according to preset beam synthesis control parameters, performs beam synthesis on the data beam to obtain multiple receiving lines, where the preset beam synthesis control parameters can meet the requirement of generating multiple adjacent receiving lines simultaneously in one transmission.

[0142] In an embodiment of the present invention, in the continuous wave spectral mode, the Doppler spectral imaging device performs analog beam synthesis on the ultrasonic echo signal to obtain an analog signal, and the analog signal is converted into digital signals corresponding to multiple receiving lines through an analog-to-digital converter; in the pulsed wave spectral mode, the Doppler spectral imaging device inputs the ultrasonic echo signal into an analog-to-digital converter to convert it into a digital signal and then performs digital beam synthesis to obtain multiple receiving lines. After that, as Figure 2 shown, the Doppler spectral imaging device performs digital signal processing on multiple receiving lines, where the digital signal processing includes: demodulation, range accumulation, and wall filtering, to obtain multiple receiving lines. Specifically, range accumulation and wall filtering need to be performed on each receiving line separately.

[0143] In an embodiment of the present invention, for the position distribution of multiple receiving lines, one of them can be set at a position coinciding with the sampling gate position, and the remaining receiving lines can be respectively set near the sampling gate position, such as on one side or both sides of the sampling gate position; or multiple receiving lines can be set near the sampling gate position and not coincide with the sampling gate position. Specifically, it is selected according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0144] In an embodiment of the present invention, multiple receiving lines have different deflection angles with respect to the normal of the probe element plane, that is, multiple receiving lines are received by the probe elements at different deflection angles.

[0145] Exemplarily, in the spectral Doppler mode during heart detection, the Doppler spectral imaging device determines the position of the sampling gate in the left ventricle of the heart, and determines the positions of three receiving lines based on the position of the sampling gate. Among them, the first receiving line is located on the left side of the sampling gate position, the second receiving line coincides with the sampling gate position, and the third receiving line is located on the right side of the sampling gate position. As Figure 4 shown, the Doppler spectral imaging device emits an ultrasonic wave once to the left ventricle of the heart, generates three receiving line signals. From Figure 4 it can be seen that when it is in the early stage of left ventricular contraction of the heart, the regurgitation position coincides with the position of the second receiving line. When it is in the end stage of left ventricular contraction of the heart, the regurgitation position coincides with the position of the first receiving line. Thus, whether it is in the early stage of left ventricular contraction of the heart or in the end stage of left ventricular contraction of the heart, the regurgitation position can be determined by emitting an ultrasonic wave once, and the regurgitation spectrum can be obtained from the regurgitation position, improving the spectral availability.

[0146] S304. The Doppler spectral imaging device combines multiple receiving lines to obtain a target receiving line.

[0147] After the Doppler spectral imaging device obtains multiple receiving lines with different deflection angles based on the ultrasonic echo signals, the Doppler spectral imaging device combines the multiple receiving lines to obtain a target receiving line.

[0148] In the embodiment of the present invention, after the Doppler spectral imaging device obtains multiple receiving lines, as Figure 2 shown, the Doppler spectral imaging device performs signal synthesis on the multiple receiving lines to obtain a target receiving line. During the signal synthesis process, the method for the Doppler spectral imaging device to combine multiple receiving lines may include at least the following four methods:

[0149] 1. The Doppler spectral imaging device performs signal accumulation on the multiple receiving lines to obtain a target receiving line;

[0150] 2. The Doppler spectral imaging device respectively obtains multiple energy values corresponding to the multiple receiving lines, determines the largest first energy value from the multiple energy values, and then determines the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines;

[0151] 3. The Doppler spectral imaging device respectively obtains multiple energy values corresponding to the multiple receiving lines, assigns multiple weight values to the multiple receiving lines according to the multiple energy values, and then performs weighted accumulation on the multiple receiving lines according to the multiple weight values to obtain a target receiving line;

[0152] 4. The Doppler spectral imaging device uses other signal combination methods to combine the multiple receiving lines to obtain a target receiving line, which is specifically selected according to the actual situation, and the embodiment of the present invention does not make specific limitations.

[0153] S305. The Doppler spectrum imaging device obtains the Doppler spectrum information at the sampling gate position according to the target receiving line.

[0154] After the Doppler spectrum imaging device combines multiple receiving lines to obtain the target receiving line, the Doppler spectrum imaging device obtains the Doppler spectrum information at the sampling gate position according to the target receiving line.

[0155] In the embodiments of the present invention, the Doppler spectrum information includes spectrum data and / or acoustic spectrum data, which is specifically selected according to the actual situation and is not specifically limited in the embodiments of the present invention.

[0156] In the embodiments of the present invention, after the Doppler spectrum imaging device obtains the target receiving line, the Doppler spectrum imaging device performs acoustic spectrogram calculation on the target receiving line to obtain spectrum data; determines the acoustic spectrum data from the target receiving line, and determines the spectrum data and / or the acoustic spectrum data as the Doppler spectrum information at the sampling gate position.

[0157] S306. The Doppler spectrum imaging device outputs the Doppler spectrum information.

[0158] After the Doppler spectrum imaging device obtains the Doppler spectrum information at the sampling gate position according to the target receiving line, the Doppler spectrum imaging device outputs the Doppler spectrum information.

[0159] In the embodiments of the present invention, the specific output manner of the Doppler spectrum imaging device for outputting the Doppler spectrum information is as Figure 2 shown. For the spectrum data in the Doppler spectrum information, the Doppler spectrum imaging device displays the spectrum data; for the acoustic spectrum data in the Doppler spectrum information, the Doppler imaging device plays the acoustic spectrum data.

[0160] It can be understood that when the Doppler imaging device emits an ultrasonic wave once to a target area including the sampling gate position, it can obtain multiple receiving lines with different deflection angles, and these multiple receiving lines cover the entire target area. When the regurgitation position moves in the target area, the Doppler imaging device can obtain the Doppler spectrum information of the regurgitation position through one emission, thereby improving the accuracy and spectrum availability of the Doppler spectrum imaging.

[0161] An embodiment of the present invention provides a Doppler spectrum imaging method, as Figure 7 shown, the method may include:

[0162] S401. The Doppler spectrum imaging device obtains the sampling gate position.

[0163] Here, the description of S401 in the embodiments of the present invention is the same as the description of S301, and will not be repeated here.

[0164] S402. The Doppler spectral imaging device emits ultrasonic waves to a target area including the sampling gate position, receives the echoes of the ultrasonic waves, and obtains an ultrasonic echo signal.

[0165] Here, the description of S402 in the embodiments of the present invention is the same as that of S302, and will not be repeated here.

[0166] S403. The Doppler spectral imaging device obtains multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles.

[0167] Here, the description of S403 in the embodiments of the present invention is the same as that of S303, and will not be repeated here.

[0168] S404. The Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line according to the multiple receiving lines.

[0169] After the Doppler spectral imaging device obtains multiple receiving lines according to the ultrasonic echo signal, the Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line according to the multiple receiving lines.

[0170] In the embodiments of the present invention, the Doppler spectral imaging device performs spectrogram calculation on each receiving line to obtain each spectral data corresponding to each receiving line; the Doppler spectral imaging device respectively determines each spectrogram data corresponding to each receiving line from each receiving line, and each spectral data and / or each spectrogram data constitute the Doppler spectral information corresponding to each receiving line.

[0171] S405. The Doppler spectral imaging device respectively outputs the Doppler spectral information at the positions corresponding to each receiving line.

[0172] After the Doppler spectral imaging device respectively obtains the Doppler spectral information at the positions corresponding to each receiving line, the Doppler spectral imaging device respectively outputs the Doppler spectral information at the positions corresponding to each receiving line.

[0173] In the embodiments of the present invention, the Doppler spectral imaging device respectively displays each spectral data at the positions corresponding to each receiving line, the Doppler spectral imaging device respectively plays each spectrogram data at the positions corresponding to each receiving line, and medical staff analyze the target receiving line corresponding to the reflux spectrum from the multiple receiving lines by analyzing each spectral data and / or each spectrogram data corresponding to each receiving line.

[0174] It can be understood that when the Doppler imaging device emits an ultrasonic wave once to a target area including the sampling gate position, it can obtain multiple receiving lines with different deflection angles, and these multiple receiving lines cover the entire target area. When the reflux position moves in the target area, the Doppler imaging device can obtain multiple Doppler spectrum information at multiple receiving line positions where the reflux position may appear in the target area. Thus, medical staff can determine the Doppler spectrum information of the reflux position from the multiple Doppler spectrum information, thereby improving the accuracy and spectrum availability of Doppler spectrum imaging.

[0175] Another embodiment of the present invention provides a Doppler spectrum imaging device 1. When in the continuous wave Doppler mode, the Doppler spectrum imaging device 1 can be a continuous wave Doppler spectrum imaging device, such as Figure 8 As shown, the Doppler spectrum imaging device 1 may include an ultrasonic probe 100, a transmitting circuit 101, a transmit / receive selection switch 102, a receiving circuit 103, a beam synthesis circuit 104, a processor 105, and a display 106. The transmitting circuit 101 can excite the ultrasonic probe 100 to emit ultrasonic waves to a target area including the sampling gate position. The receiving circuit 103 can receive ultrasonic echoes returned from the target area including the sampling gate position through the ultrasonic probe 100. After the ultrasonic echoes are subjected to beam synthesis processing by the beam synthesis circuit 104, they are sent to the processor 105. The processor 105 processes the ultrasonic echoes to obtain the Doppler spectrum information of the target area. The Doppler spectrum information obtained by the processor 105 can be stored in the memory 107. These Doppler spectrum information can be displayed on the display 106.

[0176] Among them, the processor 105 specifically performs the following steps: obtaining the sampling gate position, obtaining multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles; combining the multiple receiving lines to obtain a target receiving line; obtaining the Doppler spectrum information at the sampling gate position according to the target receiving line; and outputting the Doppler spectrum information.

[0177] Optionally, the processor 105 is further configured to perform signal accumulation on the multiple receiving lines to obtain the target receiving line.

[0178] Optionally, the processor 105 is further configured to respectively obtain multiple energy values corresponding to the multiple receiving lines; determine a first energy value with the largest energy value from the multiple energy values; and determine the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

[0179] Optionally, the processor 105 is further configured to respectively obtain multiple energy values corresponding to the multiple receiving lines; allocate multiple weight values to the multiple receiving lines according to the multiple energy values; and perform weighted accumulation on the multiple receiving lines according to the multiple weight values to obtain the target receiving line.

[0180] Optionally, the processor 105 is further configured to obtain the sampling gate position; obtain multiple receiving lines according to the ultrasonic echo signal, where the multiple receiving lines have different deflection angles; respectively obtain Doppler spectrum information at positions corresponding to each receiving line according to the multiple receiving lines; and respectively output the Doppler spectrum information at positions corresponding to each receiving line.

[0181] In an embodiment of the present invention, the display 106 of the foregoing Doppler spectrum imaging device 10 may be a touch display screen, a liquid crystal display screen, etc., or may also be an independent display device such as a liquid crystal display or a television outside the ultrasonic vector blood flow imaging device 10, or may also be a display screen on an electronic device such as a mobile phone or a tablet computer.

[0182] In an embodiment of the present application, the memory 107 of the foregoing Doppler spectrum imaging device 10 may be a flash card, a solid-state memory, a hard disk, etc.

[0183] An embodiment of the present invention provides a computer-readable storage medium storing a Doppler spectrum imaging program, which can be executed by a processor to implement the foregoing Doppler spectrum imaging method. The computer-readable storage medium may be a volatile memory, such as a random access memory (RAM); or a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or may also be a respective device including one or any combination of the foregoing memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc.

[0184] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such a process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0185] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0186] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0187] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A continuous wave Doppler spectral imaging method, characterized in that, The method includes: Obtaining the sampling gate position; Transmitting ultrasonic waves to a target area including the sampling gate position and receiving the echoes of the ultrasonic waves to obtain ultrasonic echo signals; Obtaining multiple receiving lines based on the ultrasonic echo signals, where the multiple receiving lines have different deflection angles; Combining the multiple receiving lines to obtain a target receiving line; Obtaining Doppler spectrum information at the sampling gate position based on the target receiving line; Outputting the Doppler spectrum information; Wherein, combining the multiple receiving lines to obtain a target receiving line includes: Respectively obtaining multiple energy values corresponding to the multiple receiving lines; Determining a first energy value with the largest energy value from the multiple energy values; Determining the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

2. A Doppler spectral imaging method, characterized in that, The method includes: Obtaining the sampling gate position; Transmitting ultrasonic waves to a target area including the sampling gate position and receiving the echoes of the ultrasonic waves to obtain ultrasonic echo signals; Obtaining multiple receiving lines based on the ultrasonic echo signals, where the multiple receiving lines have different deflection angles; Combining the multiple receiving lines to obtain a target receiving line; Obtaining Doppler spectrum information at the sampling gate position based on the target receiving line; Outputting the Doppler spectrum information; Wherein, combining the multiple receiving lines to obtain a target receiving line includes: Respectively obtaining multiple energy values corresponding to the multiple receiving lines; Determining a first energy value with the largest energy value from the multiple energy values; Determining the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

3. A continuous wave Doppler spectral imaging device, characterized in that, The continuous wave Doppler spectrum imaging device includes: An ultrasonic probe; A transmitting circuit that excites the ultrasonic probe to transmit ultrasonic waves to a target area including the sampling gate position; A receiving circuit that receives ultrasonic echoes returned from the target area through the ultrasonic probe; A processor that processes the ultrasonic echoes to obtain Doppler spectrum information of the target area; A display that displays the Doppler spectrum information; Wherein, the processor specifically executes the following steps: obtaining the sampling gate position, obtaining multiple receiving lines based on the ultrasonic echo signals, where the multiple receiving lines have different deflection angles; combining the multiple receiving lines to obtain a target receiving line; obtaining Doppler spectrum information at the sampling gate position based on the target receiving line; outputting the Doppler spectrum information; Wherein, combining the multiple receiving lines to obtain a target receiving line includes: Respectively obtaining multiple energy values corresponding to the multiple receiving lines; Determining a first energy value with the largest energy value from the multiple energy values; Determining the first receiving line corresponding to the first energy value as the target receiving line, where the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

4. A Doppler spectral imaging device, characterized in that, The Doppler spectrum imaging device includes: An ultrasonic probe; A transmitting circuit that excites the ultrasonic probe to emit ultrasonic waves towards a target area including a sampling gate position; A receiving circuit that receives ultrasonic echoes returned from the target area through the ultrasonic probe; A processor that processes the ultrasonic echoes to obtain Doppler spectrum information of the target area; A display that displays the Doppler spectrum information; Wherein, the processor specifically performs the following steps: obtaining the sampling gate position, obtaining multiple receiving lines according to the ultrasonic echo signals, wherein the multiple receiving lines have different deflection angles; merging the multiple receiving lines to obtain a target receiving line; obtaining the Doppler spectrum information at the sampling gate position according to the target receiving line; outputting the Doppler spectrum information; Wherein, the merging the multiple receiving lines to obtain a target receiving line includes: Respectively obtaining multiple energy values corresponding to the multiple receiving lines; Determining a first energy value with the largest energy value from the multiple energy values; Determining the first receiving line corresponding to the first energy value as the target receiving line, and the first receiving line is the receiving line corresponding to the first energy value among the multiple receiving lines.

5. A storage medium, characterized in that, The storage medium stores a computer program, and the computer program can be executed by a processor to implement the Doppler spectrum imaging method according to claim 1 or 2.

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