CN112469337B

CN112469337B - Ultrasonic vector blood flow imaging method and device and storage medium

Info

Publication number: CN112469337B
Application number: CN201880095944.8A
Authority: CN
Inventors: 杜宜纲; 杨波; 范伟; 王凯; 杨鹏飞
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2022-10-28
Anticipated expiration: 2038-08-28
Also published as: WO2020041986A1; CN112469337A

Abstract

An ultrasonic vector blood flow imaging method and device and a storage medium are provided, the method comprises: determining a target region of a target scanning object in an ultrasonic blood flow image (S101); acquiring at least two groups of speed components corresponding to a target area, wherein each group of speed components comprises at least one speed component (S102); processing the at least two groups of speed components, and determining at least two speed components at a target position, wherein the target position is a pixel point position to be displayed in a target area (S103); synthesizing the at least two velocity components, determining a velocity vector at the target location (S104); the velocity vector is displayed at the target position in the ultrasonic blood flow image (S105).

Description

Ultrasonic vector blood flow imaging method and device and storage medium

Technical Field

The invention relates to the field of ultrasonic imaging, in particular to an ultrasonic vector blood flow imaging method and device and a storage medium.

Background

Compared with the traditional color Doppler ultrasound, the ultrasonic vector blood flow imaging technology can calculate the size and the direction of the blood flow velocity without angle correction, is not dependent on the angle, and can be used as an important basis for diagnosing vascular diseases. However, the ultrasound vector blood flow imaging technology usually needs to rely on a high-end ultrasound platform to realize high-quality vector blood flow imaging, and the imaging process is complex.

Disclosure of Invention

In order to solve the above technical problems, embodiments of the present invention are intended to provide an ultrasound vector blood flow imaging method and apparatus, and a storage medium, which can reduce the complexity of an ultrasound vector blood flow imaging process.

The embodiment of the invention provides an ultrasonic vector blood flow imaging method, which is applied to an ultrasonic vector blood flow imaging device and comprises the following steps:

in a first aspect, an embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging apparatus, and the method includes:

determining a target area of a target scanning object in an ultrasonic blood flow image;

acquiring at least two groups of speed components corresponding to the target area, wherein each group of speed components comprises at least one speed component;

processing the at least two groups of velocity components, and determining at least two velocity components at a target position, wherein the target position is a position of a pixel point to be displayed in the target area;

synthesizing the at least two velocity components, determining a velocity vector at the target location;

displaying the velocity vector at the target location in the ultrasound blood flow image.

In the above method, the processing the at least two sets of velocity components to determine at least two velocity components at the target position includes:

and performing interpolation calculation on the at least two groups of velocity components to determine at least two velocity components at the target position.

at least two velocity components at the target location are selected from the at least two sets of velocity components.

In the above method, the interpolating the at least two sets of velocity components to determine at least two velocity components at the target position includes:

determining a corresponding first velocity component at the target location from a first set of velocity components, wherein the first set of velocity components is any one of the at least two sets of velocity components, and the first velocity component is one of the first set of velocity components;

interpolating a second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components that is different from the first set of velocity components;

determining the first and second velocity components as the at least two velocity components.

In the above method, said determining a corresponding first velocity component at the target position from a first set of velocity components comprises:

determining a first pixel point from all pixel points corresponding to the first group of velocity components, and determining the velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, wherein the first pixel point is any one of all pixel points corresponding to the first group of velocity components;

correspondingly, the interpolating the second set of velocity components to determine the corresponding second velocity component at the target position includes:

acquiring at least two second pixel points adjacent to the target position, wherein the at least two second pixel points are at least two pixel points in all pixel points corresponding to the second group of velocity components;

and carrying out interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity components.

interpolating a first set of velocity components to determine a corresponding first velocity component at the target location, wherein the first set of velocity components is any one of the at least two sets of velocity components;

In the above method, the interpolating the first set of velocity components to determine the corresponding first velocity component at the target location includes:

acquiring at least two adjacent first pixel points at the target position from all corresponding pixel points in the first group of velocity components, wherein the at least two first pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components;

performing interpolation calculation on at least two velocity components corresponding to the at least two first pixel points to obtain the first velocity components;

correspondingly, the interpolating the second set of velocity components to determine a corresponding second velocity component at the target position includes:

acquiring at least two adjacent second pixel points at the target position from all corresponding pixel points in the second group of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components;

In the above method, the selecting at least two velocity components at the target position from the at least two sets of velocity components comprises:

selecting a velocity component corresponding to a first pixel point from a first group of velocity components, and determining the velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, wherein the first pixel point is any one of all pixel points corresponding to the first group of velocity components;

and selecting a velocity component corresponding to a second pixel point from a second group of velocity components, and determining the velocity component corresponding to the second pixel point as a second velocity component corresponding to the target position, wherein the second pixel point is any one of all pixel points corresponding to the second group of velocity components, and the positions of the first pixel point and the second pixel point are overlapped.

In the above method, the displaying the velocity vector at the target position in the ultrasound blood flow image comprises:

determining a display form of an arrow according to the speed vector;

displaying the arrow at the target location according to the display form to display the velocity vector at the target location.

In the above method, the speed vector includes a speed magnitude and a speed direction, and the determining a display form of an arrow according to the speed vector includes:

determining the speed direction as the direction of the arrow;

determining at least one of a size of the arrow and a color of the arrow according to the velocity magnitude.

In the above method, before the determining the target region of the target scanning object in the ultrasound bloodstream image, the method further comprises:

respectively transmitting ultrasonic waves at least twice to the target scanning object at least two transmitting angles;

receiving echo signals in response to at least two reception angles of the ultrasonic waves;

and generating the ultrasonic blood flow image according to the echo signal.

transmitting ultrasonic waves at least twice to the target scanning object at a transmitting angle;

and generating the ultrasonic blood flow image according to the echo signal.

In the above method, the transmitting the ultrasonic waves at least twice at least two transmission angles to the target scanning object respectively includes:

and alternately transmitting ultrasonic waves to the target scanning object at least twice according to preset time at the at least two transmitting angles.

In the above method, the obtaining at least two sets of velocity components corresponding to the target region includes:

and performing Doppler ultrasonic blood flow calculation on the echo signals corresponding to the target area to obtain the at least two groups of velocity components.

In the above method, the determining a target region of the target scanning object in the ultrasound bloodstream image includes:

and determining the target area according to the overlapping area of the echo signals.

In a second aspect, an embodiment of the present invention provides an ultrasound vector blood flow imaging apparatus, including:

a probe;

the transmitting circuit excites the probe to transmit ultrasonic waves to a target scanning object;

a receiving circuit that receives an ultrasonic echo returned from the target scanning object through the probe to obtain an echo signal;

a processor that processes the echo signals to obtain an ultrasonic blood flow image of the target scan object;

a display that displays the ultrasound blood flow image;

wherein the processor specifically executes the following steps: determining a target area of a target scanning object in an ultrasonic blood flow image; acquiring at least two groups of speed components corresponding to the target area, wherein each group of speed components comprises at least one speed component; processing the at least two groups of velocity components, and determining at least two velocity components at a target position, wherein the target position is a position of a pixel point to be displayed in the target area; synthesizing the at least two velocity components to determine a velocity vector at the target location; displaying the velocity vector at the target location in the ultrasound blood flow image.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to perform interpolation calculation on the at least two sets of velocity components, and determine at least two velocity components at the target position.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to select at least two velocity components at the target position from the at least two sets of velocity components.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to determine a corresponding first velocity component at the target position from a first set of velocity components, where the first set of velocity components is any one of the at least two sets of velocity components, and the first velocity component is one of the first set of velocity components; interpolating a second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components that is different from the first set of velocity components; determining the first and second velocity components as the at least two velocity components.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to determine a first pixel point from all pixel points corresponding to the first group of velocity components, and determine a velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; acquiring at least two second pixel points adjacent to the target position, wherein the at least two second pixel points are at least two pixel points in all pixel points corresponding to the second group of velocity components; and carrying out interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity components.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to interpolate a first set of velocity components to determine a corresponding first velocity component at the target position, where the first set of velocity components is any one of the at least two sets of velocity components; interpolating a second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components that is different from the first set of velocity components; determining the first and second velocity components as the at least two velocity components.

In the above ultrasound vector blood flow imaging device, the processor is further configured to obtain at least two adjacent first pixel points at the target position from all corresponding pixel points in the first group of velocity components, where the at least two first pixel points are at least two pixel points in all pixel points corresponding to the first group of velocity components; performing interpolation calculation on at least two velocity components corresponding to the at least two first pixel points to obtain the first velocity components; acquiring at least two adjacent second pixel points at the target position from all corresponding pixel points in the second group of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components; and carrying out interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity components.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to select a velocity component corresponding to a first pixel point from a first group of velocity components, and determine the velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; and selecting a velocity component corresponding to a second pixel point from a second group of velocity components, and determining the velocity component corresponding to the second pixel point as a second velocity component corresponding to the target position, wherein the second pixel point is any one of all pixel points corresponding to the second group of velocity components, and the positions of the first pixel point and the second pixel point are overlapped.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to determine a display form of an arrow according to the velocity vector;

the display is further configured to display the arrow at the target location according to the display form to display the velocity vector at the target location.

In the above ultrasonic vector blood flow imaging apparatus, the velocity vector includes a velocity magnitude and a velocity direction,

the processor further configured to determine the speed direction as a direction of the arrow; determining at least one of a size of the arrow and a color of the arrow according to the velocity magnitude.

In the above ultrasonic vector blood flow imaging apparatus, the transmitting circuit is specifically configured to transmit ultrasonic waves to the target scanning object at least twice at least two transmission angles, respectively;

the receiving circuit is specifically used for receiving echo signals of at least two receiving angles responding to the ultrasonic waves;

the processor is further configured to generate the ultrasonic blood flow image according to the echo signal.

In the above ultrasonic vector blood flow imaging apparatus, the transmitting circuit is further configured to transmit ultrasonic waves to the target scanning object at a transmitting angle at least twice;

the receiving circuit is further used for receiving echo signals of at least two receiving angles responding to the ultrasonic waves;

In the above ultrasound vector blood flow imaging apparatus, the transmitting circuit is further configured to alternately transmit the ultrasound waves to the target scanning object at least twice at the at least two transmitting angles according to a preset time.

In the above ultrasound vector blood flow imaging device, the processor is further configured to perform doppler ultrasound blood flow calculation on the echo signal corresponding to the target region, so as to obtain the at least two sets of velocity components.

In the above ultrasound vector blood flow imaging apparatus, the processor is further configured to determine an overlapping area of the echo signals as the target area.

In a third aspect, embodiments of the present invention provide a storage medium, on which a computer program is stored, which is applied to an ultrasound vector blood flow imaging apparatus, and when executed by a processor, implements the method according to the first aspect.

The embodiment of the invention provides an ultrasonic vector blood flow imaging method, an ultrasonic vector blood flow imaging device and a storage medium, wherein the method comprises the following steps: determining a target area of a target scanning object in an ultrasonic blood flow image; acquiring at least two groups of speed components corresponding to a target area, wherein each group of speed components comprises at least one speed component; processing the at least two groups of velocity components, and determining at least two velocity components at a target position, wherein the target position is a position of a pixel point to be displayed in a target area; synthesizing at least two velocity components to determine a velocity vector at the target position; the velocity vector is displayed at a target location in the ultrasound blood flow image. By adopting the scheme, the ultrasonic vector blood flow imaging device determines the target area of the target scanning object in the ultrasonic blood flow image, acquires at least two groups of speed components corresponding to the target area, processes the at least two groups of speed components to obtain the speed vector at the target position, and finally displays the speed vector at the target position in the ultrasonic blood flow image.

Drawings

Fig. 1 is a schematic diagram of an ultrasound vector blood flow imaging apparatus according to an embodiment of the present invention;

fig. 2 is a first flowchart of an ultrasound vector blood flow imaging method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating an exemplary emission of focused waves from different emission apertures according to an embodiment of the present invention;

fig. 4 is an exemplary schematic emission diagram for alternately emitting two different emission angles for the same region according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an exemplary probe edge position transmission using different transmission angles, according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an exemplary velocity angle composition provided by embodiments of the present invention;

FIG. 7 is a diagram illustrating an exemplary calculation of velocity vectors by interpolation according to an embodiment of the present invention;

FIG. 8 is a diagram illustrating an exemplary characterization of a velocity vector by arrow color according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating an exemplary representation of velocity vectors by arrow thickness according to an embodiment of the present invention;

fig. 10 is a flowchart of a method for ultrasound vector blood flow imaging according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of an exemplary ultrasound vector blood flow imaging apparatus provided in accordance with embodiments of the present invention;

fig. 12 is a third flowchart of an ultrasound vector blood flow imaging method according to an embodiment of the present invention;

fig. 13 is a fourth flowchart of an ultrasound vector blood flow imaging method according to an embodiment of the present invention;

fig. 14 is a flowchart of a fifth ultrasound vector blood flow imaging method according to an embodiment of the present invention.

Detailed Description

So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.

An embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging apparatus 10, as shown in fig. 1, the ultrasound vector blood flow imaging apparatus 10 may include an ultrasound probe 100, a transmitting circuit 101, a transmitting/receiving selection switch 102, a receiving circuit 103, a beam forming circuit 104, a processor 105, and a display 106. The transmit circuit 101 may excite the ultrasound probe 100 to transmit ultrasound waves to a target scan object. The receiving circuit 103 may receive an ultrasonic echo returned from a target scanning object through the ultrasonic probe 100, thereby obtaining an echo signal/data. The echo signals/data are subjected to beamforming processing by the beamforming circuit 104, and then sent to the processor 105. The processor 105 processes the echo signals/data to acquire tissue related parameters and ultrasound blood flow images of the target scan object. The ultrasound blood flow images obtained by the processor 105 may be stored in the memory 107. These ultrasound flow images may be displayed on the display 106.

In this embodiment, the display 106 of the ultrasound vector blood flow imaging apparatus 10 may be a touch display screen, a liquid crystal display, or the like, or may be an independent display device such as a liquid crystal display, a television, or the like, which is independent of the ultrasound vector blood flow imaging apparatus 10, or may be a display screen on an electronic device such as a mobile phone, a tablet computer, or the like.

In the embodiment of the present application, the memory 107 of the ultrasound vector blood flow imaging apparatus 10 may be a flash memory card, a solid-state memory, a hard disk, or the like.

Embodiments of the present application also provide a computer-readable storage medium, where a plurality of program instructions are stored, and when the plurality of program instructions are called and executed by the processor 105, some or all of the steps in the ultrasound vector blood flow imaging or any combination of the steps in the ultrasound vector blood flow imaging in the various embodiments of the present application may be executed.

In one embodiment, the computer readable storage medium may be the memory 107, which may be a non-volatile storage medium such as a flash memory card, solid state memory, hard disk, or the like.

In this embodiment, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 may be implemented by software, hardware, firmware or a combination thereof, and may use a circuit, a single or multiple Application Specific Integrated Circuits (ASICs), a single or multiple general purpose integrated circuits, a single or multiple microprocessors, a single or multiple programmable logic devices, or a combination of the foregoing circuits or devices, or other suitable circuits or devices, so that the processor 105 may execute the corresponding steps of the ultrasound vector blood flow imaging method in the foregoing embodiments.

The ultrasound vector blood flow imaging method of the present application is described in detail below with reference to fig. 2.

S101, determining a target area of a target scanning object in the ultrasonic blood flow image.

The ultrasonic vector blood flow imaging method provided by the embodiment of the invention is suitable for the scene of ultrasonic vector blood flow imaging based on an ultrasonic wave emission mode.

In the embodiment of the present invention, the ultrasonic waves include focused waves, plane waves, divergent waves, and the like, which are specifically selected according to actual situations, and the embodiment of the present invention is not specifically limited.

In the embodiment of the present invention, an ultrasonic probe 100 is disposed on an ultrasonic vector blood flow imaging device 10, and the ultrasonic vector blood flow imaging device 10 determines one emission angle or at least two emission angles by adjusting the size and the position of an emission aperture of the ultrasonic probe 100; the transmitting circuit 101 in the ultrasonic vector blood flow imaging device 10 transmits ultrasonic waves to the target scanning object at least twice at a transmitting angle, then the receiving circuit 103 receives echo signals of at least two receiving angles in response to the ultrasonic waves, and the processor 105 in the ultrasonic vector blood flow imaging device 10 determines an ultrasonic blood flow image according to the echo signals.

In the embodiment of the present invention, an ultrasonic probe 100 is arranged on an ultrasonic vector blood flow imaging device 10, and the ultrasonic vector blood flow imaging device 10 determines at least two emission angles by adjusting the size and the position of an emission aperture of the ultrasonic probe 100; the transmitting circuit 101 in the ultrasound vector blood flow imaging apparatus 10 may alternately transmit the ultrasound waves to the target scanning object at least twice at least two transmitting angles according to the preset time, and then the receiving circuit 103 receives echo signals of at least two receiving angles in response to the ultrasound waves, and the processor 105 in the ultrasound vector blood flow imaging apparatus 10 determines the ultrasound blood flow image according to the echo signals.

In this embodiment of the present invention, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 may perform beam forming and wall filtering on the received ultrasonic echo signal to obtain an echo signal corresponding to the target region.

In the embodiment of the present invention, the processor 105 determines the scanning position of the target scanning object according to the intensity of the emission sound field, so that when the ultrasonic vector blood flow imaging device 10 performs scanning at the determined scanning position, the target area where the target scanning object is located is an overlapping area of echo signals of at least two reception angles in response to the ultrasonic waves.

Illustratively, as shown in fig. 3, there are two emission angles, i.e., a vertical angle emitted from the emission aperture 1 and a left angle emitted from the emission aperture 2, which respectively form two focused waves at different angles, and the target area of the target scanning object in the ultrasound blood flow image is an overlapping scanning area of the focused waves at two angles represented by dashed oblique lines.

In the embodiment of the present invention, the target scanning object is a blood vessel tissue, which is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.

Illustratively, as shown in fig. 4, there are two emission angles of 1 and 2, and the number of emission times is 5, then the ultrasonic vector blood flow imaging device emits according to the form 1212121212.

In an embodiment of the present invention, one of the at least two transmission angles is different for the two edge positions of the ultrasound probe 100.

Illustratively, as shown in fig. 5, the emission angles corresponding to the emission apertures 2 at the left edge position and the right edge position of the probe are different, and for the left edge position, the emission angle is vertical and deviated to the left; for the right edge position, the emission angle is vertical and to the right.

It will be appreciated that transmitting two different sets of transmit angles to two edge locations of the ultrasound probe 100 can result in a wider imaging region of blood flow.

S102, at least two groups of speed components corresponding to the target area are obtained, wherein each group of speed components comprises at least one speed component.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the target region of the target scanning object in the ultrasound blood flow image, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 acquires at least two sets of velocity components corresponding to the target region.

In the embodiment of the present invention, the processor 105 in the ultrasound vector blood flow imaging apparatus 10 performs doppler ultrasound blood flow calculation on the echo signal to obtain at least two sets of velocity components corresponding to the echo signal.

In the embodiment of the invention, the Doppler ultrasonic blood flow calculation formula is as follows:

wherein c is the ultrasonic propagation velocity, f ₀ The center frequency of the probe transmit signal, fPRF the transmit pulse repetition frequency,

is a real part operator，

Is the imaginary operator.

Where N is the number of shots at the same location of the target scan object and j is an imaginary unit. The calculated v is the velocity component of the actual velocity of the target scan object along the plurality of transmit angles.

In the embodiment of the invention, doppler ultrasonic blood flow calculation is adopted to calculate the velocity component corresponding to each calculation point under each emission angle, so that each group of velocity components under each emission angle is obtained, and finally each group of velocity components form at least two groups of velocity components.

S103, processing the at least two groups of velocity components, and determining at least two velocity components at a target position, wherein the target position is a position of a pixel point to be displayed in a target area.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 acquires the at least two sets of velocity components corresponding to the target region, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 processes the at least two sets of velocity components to determine that the at least two velocity components at the pixel point position to be displayed in the target region are obtained.

In this embodiment of the present invention, assuming that the positions of the corresponding pixel points in the at least two sets of velocity components do not completely coincide, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 performs interpolation calculation on the at least two sets of velocity components to determine at least two velocity components at the target position, and assuming that the positions of each pixel point in the at least two sets of velocity components completely coincide, the processor directly obtains the at least two velocity components corresponding to each pixel point without performing interpolation calculation, synthesizes the at least two velocity components of each pixel point, and determines the final velocity vector of each pixel point.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines at least two velocity components at the target position from at least two sets of velocity components according to the beam forming manner of the pixel points.

It should be noted that, a specific calculation method for determining at least two velocity components is selected according to actual situations, and the embodiment of the present invention is not limited specifically.

In one possible implementation, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 employs an interpolation calculation method, and one of the processes of determining at least two velocity components at the target position is: the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines a corresponding first velocity component at the target location from a first set of velocity components, wherein the first set of velocity components is any one of at least two sets of velocity components, and the first velocity component is one of the first set of velocity components; interpolating the second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components different from the first set of velocity components; the first and second velocity components are determined as at least two velocity components.

Specifically, the processor 105 of the ultrasonic vector blood flow imaging device 10 determines a first pixel point from all pixel points corresponding to a first group of velocity components, and determines a velocity component corresponding to the first pixel point as a first velocity component corresponding to a target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; then, the processor 105 of the ultrasonic vector blood flow imaging device 10 obtains at least two second pixel points adjacent to the target position, where the at least two second pixel points are at least two pixel points of all pixel points corresponding to the second group of velocity components; and performing interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain second velocity components.

The interpolation calculation method includes a 4-point interpolation calculation method or an 8-point interpolation calculation method, the specific interpolation number is determined by the number of the second angle calculation points, and the embodiment of the present invention is not particularly limited.

In one possible implementation, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 employs an interpolation calculation method, and another process of determining at least two velocity components at the target position is: the processor 105 of the ultrasonic vector blood flow imaging device 10 performs interpolation calculation on a first set of velocity components to determine a corresponding first velocity component at the target position, wherein the first set of velocity components is any one of at least two sets of velocity components; the processor 105 of the ultrasound vector blood flow imaging apparatus 10 interpolates a second set of velocity components to determine corresponding second velocity components at the target position, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components different from the first set of velocity components; the processor 105 of the ultrasound vector flow imaging apparatus 10 determines the first velocity component and the second velocity component as at least two velocity components.

Specifically, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 obtains at least two adjacent first pixel points at the target position from all corresponding pixel points in the first group of velocity components, where the at least two first pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components; performing interpolation calculation on at least two velocity components corresponding to the at least two first pixel points to obtain first velocity components; the processor 105 of the ultrasonic vector blood flow imaging device 10 obtains at least two adjacent second pixel points at the target position from all corresponding pixel points in the second set of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first set of velocity components; and performing interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain second velocity components.

In one possible implementation, the processor 105 of the ultrasound vector flow imaging apparatus 10 may determine at least two velocity components at the target location without interpolation. That is, the positions of the corresponding pixels in the at least two sets of velocity components are completely overlapped. Therefore, at least two velocity components can be obtained on the same pixel point, and the at least two velocity components are synthesized to determine the final velocity vector of the pixel point. Wherein the process of determining at least two velocity components at the target location is: the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines a first velocity component and a second velocity component at the target location from at least two sets of velocity components; and determining the first velocity component and the second velocity component as at least two velocity components.

Specifically, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 selects a velocity component corresponding to a first pixel point from a first group of velocity components, and determines the velocity component corresponding to the first pixel point as a first velocity component corresponding to a target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; the processor 105 of the ultrasonic vector blood flow imaging device 10 selects a velocity component corresponding to the second pixel point from the second group of velocity components, and determines the velocity component corresponding to the second pixel point as a second velocity component corresponding to the target position, where the second pixel point is any one of all pixel points corresponding to the second group of velocity components, and the positions of the first pixel point and the second pixel point coincide.

And S104, synthesizing the at least two groups of velocity components, and determining the velocity component at a target position, wherein the target position is the position of a pixel point to be displayed in a target area.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 obtains at least two sets of velocity components corresponding to the target region, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 synthesizes the at least two sets of velocity components to determine the velocity component at the target position.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 synthesizes the first velocity component and the second velocity component to obtain a velocity vector at the target position.

For example, fig. 6 shows two velocity components corresponding to two different emission angles at the target position, and the two velocity components are angle-synthesized, where the synthesized velocity vector is the velocity vector of the target position.

Exemplarily, as shown in fig. 7, the ultrasonic vector blood flow imaging apparatus emits two times of focused waves at an emission angle 1 and an emission angle 2, at this time, an overlapping region between an echo signal corresponding to the emission angle 1 and an echo signal corresponding to the emission angle 2 is a target region, a calculation point corresponding to the emission angle 1 is taken as a target position, a calculation point A1 of the emission angle 1 in the overlapping region is determined, 4 calculation points corresponding to the emission angle 2 adjacent to the A1 are searched, 4-point interpolation calculation is performed on the 4 calculation points to obtain a velocity component corresponding to the emission angle 2 at the A1, and a velocity component corresponding to the emission angle 2 and a velocity component corresponding to the emission angle 1 are subjected to velocity synthesis to obtain a velocity vector at the A1 position.

And S105, displaying the velocity vector at the target position in the ultrasonic blood flow image.

After the processor 105 of the ultrasound vector flow imaging apparatus 10 determines the velocity vector at the target location, the processor 105 of the ultrasound vector flow imaging apparatus 10 displays the velocity vector at the target location in the ultrasound blood flow image.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 characterizes a velocity vector in the ultrasound blood flow image in the form of an arrow, and the ultrasound vector blood flow imaging apparatus 10 displays the arrow at a target position in the ultrasound blood flow image according to a preset display strategy.

In the embodiment of the present invention, the ultrasound blood flow image includes a two-dimensional gray scale image, a doppler color blood flow map, or both the two-dimensional gray scale image and the doppler color blood flow image are displayed, which is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.

In an embodiment of the present invention, the velocity vector includes a velocity magnitude and a velocity direction, where the arrow direction is a blood flow velocity direction of the target position, and at least one of a length of the arrow, a size of the arrow, and a thickness of the arrow is determined according to the velocity magnitude.

Optionally, the length of the arrow is proportional to the speed, the square of the speed, or the square root of the speed, and is specifically selected according to the actual situation, and the embodiment of the present invention is not specifically limited.

In the embodiment of the invention, the speed vector is characterized by utilizing the colors of the arrows with different degrees, namely, the head color of the arrow is determined according to the speed direction, and the tail color of the arrow is determined according to the speed magnitude.

It can be understood that, the ultrasonic vector blood flow imaging device determines the target area of the target scanning object in the ultrasonic blood flow image, and obtains at least two sets of velocity components corresponding to the target area, and then processes the at least two sets of velocity components to obtain the velocity vector at the target position, and finally displays the velocity vector at the target position in the ultrasonic blood flow image.

An embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging device 10, where the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100, as shown in fig. 10, the method may include:

s201, the ultrasonic vector blood flow imaging device alternately transmits ultrasonic waves to a target scanning object at least twice according to preset time at least two transmitting angles.

The ultrasonic vector blood flow imaging method provided by the embodiment of the invention is suitable for a scene of ultrasonic vector blood flow imaging based on at least two emission angles and interpolation calculation.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 sets at least two emission angles in advance, and the processor 105 of the ultrasound vector blood flow imaging apparatus 10 adjusts a plurality of emission angles by adjusting the size and the position of the emission aperture of the ultrasound probe 100.

In the embodiment of the present invention, for the probe edge position of the ultrasound probe 100, one of the at least two transmission angles is determined as a different transmission angle.

Illustratively, as shown in fig. 4, the left edge position and the right edge position of the probe correspond to two emission angles, respectively, and for the left edge position, the emission angle is vertical and deviated to the left; for the right edge position, the emission angle is vertical and to the right.

In the embodiment of the present invention, the transmitting circuit 101 of the ultrasonic vector blood flow imaging apparatus 10 adopts an ultrasonic wave transmitting manner, and alternately transmits ultrasonic waves to the target scanning object at least twice according to a preset time at least two transmitting angles.

In the embodiment of the present invention, the ultrasonic waves include traditional focused waves, plane waves, or divergent waves, which are specifically selected according to actual situations, and the embodiment of the present invention is not specifically limited.

Illustratively, as shown in fig. 3, there are two emission angles of 1 and 2, and the number of emission times is 5, then the ultrasound vector blood flow imaging device emits according to the form 1212121212.

In the embodiment of the present invention, the position of the target scanning object is determined according to the intensity of the emission sound field, so that when the emission circuit 101 of the ultrasonic vector blood flow imaging apparatus 10 scans in the scanning area, the position of the target scanning position in the scanning area is the overlapping area of the multi-angle focused waves.

Illustratively, as shown in fig. 2, there are two emission angles, i.e., a vertical angle emitted from the emission aperture 1 and a left angle emitted from the emission aperture 2, and two focused waves of different angles are formed, respectively, so that the position of the target scanning object is a scanning area where the focused waves of two angles represented by dashed oblique lines overlap.

S202, the ultrasonic vector blood flow imaging device receives echo signals of at least two receiving angles responding to ultrasonic waves.

After the transmitting circuit 101 of the ultrasonic vector blood flow imaging apparatus 10 alternately transmits the ultrasonic waves to the target scanning object at least twice at least two transmitting angles according to the preset time, the receiving circuit 103 of the ultrasonic vector blood flow imaging apparatus 10 receives the echo signals in response to at least two receiving angles of the ultrasonic waves.

In the embodiment of the present invention, the receiving circuit 103 of the ultrasound vector blood flow imaging apparatus 10 receives an ultrasound echo signal in response to an ultrasound wave by using the receiving circuit, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 performs beamforming on the ultrasound echo signal to obtain multi-angle beamforming data, and then performs wall filtering on the multi-angle beamforming data to obtain an echo signal.

And S203, generating an ultrasonic blood flow image according to the echo signal by the ultrasonic vector blood flow imaging device.

After the receiving circuit 103 of the ultrasonic vector blood flow imaging apparatus 10 receives the echo signals of at least two receiving angles in response to the ultrasonic waves, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 generates an ultrasonic blood flow image based on the echo signals.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 processes the echo signal to obtain a doppler color blood flow map.

Further, the transmitting circuit 101 of the ultrasonic vector blood flow imaging device 10 transmits by using another set of transmitting conditions, and sequentially performs beam forming and gray scale image processing on the echo data received by the receiving circuit 103 to obtain a two-dimensional gray scale image.

In the embodiment of the present invention, the transmission condition refers to a transmission waveform, a center frequency of a transmission signal, a length (cycle number) of the transmission signal, and the like.

In the embodiment of the present invention, the ultrasound blood flow image includes a two-dimensional grayscale image, a doppler color blood flow map, or an image displayed by the two-dimensional grayscale image and the doppler color blood flow map, which is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.

And S204, the ultrasonic vector blood flow imaging device determines a target area of the target scanning object in the ultrasonic blood flow image according to the overlapping area of the echo signals.

After the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 determines the ultrasonic blood flow image according to the echo signals, the ultrasonic vector blood flow imaging apparatus 10 determines a target region of the target scanning object in the ultrasonic blood flow image according to the overlapping region of the echo signals.

In this embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the position of the target scanning object according to the intensity of the emission sound field, so that when the ultrasound vector blood flow imaging apparatus 10 scans in the scanning region, the target region where the target scanning object in the scanning region is located is the overlapping region of the multi-angle focused waves.

S205, the ultrasonic vector blood flow imaging device acquires at least two groups of velocity components corresponding to the target area, wherein each group of velocity components comprises at least one velocity component.

After the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 determines the target region of the target scanning object in the ultrasonic blood flow image according to the overlapping region of the echo signals, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 needs to acquire at least two sets of velocity components corresponding to the target region.

In the embodiment of the present invention, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 performs doppler ultrasonic blood flow calculation on the echo signal to obtain at least two sets of velocity components corresponding to the echo signal, where each set of velocity components includes at least one velocity component.

In the embodiment of the invention, the calculation formula of Doppler ultrasonic blood flow is as follows:

wherein c is the ultrasonic propagation velocity, f ₀ Centre frequency, f, of signals transmitted for the probe _PRF In order to transmit the pulse repetition frequency,

is the operator of the real part,

is the imaginary operator.

Wherein, N is the emission times at the same position of the target scanning object, and j is an imaginary unit. The calculated v is the velocity component of the actual velocity of the target scan object along the multiple emission angles.

In the embodiment of the invention, doppler ultrasonic blood flow calculation is adopted to calculate the velocity component corresponding to each calculation point under each emission angle, so that each group of velocity components under each emission angle is obtained, and at least two groups of velocity components are obtained finally.

S206, the ultrasonic vector blood flow imaging device carries out interpolation calculation on the at least two groups of velocity components, and at least two velocity components at the target position are determined.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 obtains at least two sets of velocity components corresponding to the target region, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 performs interpolation calculation on the at least two sets of velocity components to determine that at least two velocity components at the target position are obtained.

In one possible implementation, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines a corresponding first velocity component at the target location from a first set of velocity components, wherein the first set of velocity components is any one of at least two sets of velocity components, and the first velocity component is one of the first set of velocity components; interpolating the second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components different from the first set of velocity components; the first and second velocity components are determined as at least two velocity components.

In the embodiment of the present invention, the interpolation calculation method includes a 4-point interpolation calculation method or an 8-point interpolation calculation method, and the specific number of interpolations is selected according to an actual situation, which is not specifically limited in the embodiment of the present invention.

In one possible implementation, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 interpolates a first set of velocity components to determine a corresponding first velocity component at the target position, wherein the first set of velocity components is any one of at least two sets of velocity components; the processor 105 of the ultrasound vector blood flow imaging apparatus 10 interpolates a second set of velocity components to determine corresponding second velocity components at the target position, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components different from the first set of velocity components; the processor 105 of the ultrasound vector flow imaging apparatus 10 determines the first velocity component and the second velocity component as at least two velocity components.

Specifically, the processor 105 of the ultrasonic vector blood flow imaging device 10 obtains at least two adjacent first pixel points at the target position from all corresponding pixel points in the first group of velocity components, where the at least two first pixel points are at least two pixel points in all pixel points corresponding to the first group of velocity components; performing interpolation calculation on at least two velocity components corresponding to the at least two first pixel points to obtain first velocity components; the processor 105 of the ultrasonic vector blood flow imaging device 10 obtains at least two adjacent second pixel points at the target position from all corresponding pixel points in the second set of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first set of velocity components; and performing interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain second velocity components.

S207, the ultrasonic vector blood flow imaging device synthesizes the at least two velocity components, and determines a velocity vector at a target position, wherein the target position is a position of a pixel point to be displayed in a target area.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 performs interpolation calculation on the at least two sets of velocity components to determine at least two velocity components at the target position, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 synthesizes the at least two velocity components to determine the velocity vector at the target position.

In this embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 synthesizes the first velocity component and the second velocity component to obtain a velocity vector at the target position.

And S208, the ultrasonic vector blood flow imaging device determines the display form of the arrow according to the velocity vector.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 synthesizes at least two velocity components to determine the velocity vector at the target position, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the display form of the arrow according to the velocity vector.

In an embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 characterizes velocity vectors in the ultrasound blood flow image in the form of arrows.

In the embodiment of the present invention, the display form of the arrow includes at least one of a size, a length, a thickness, a direction, and a color of the arrow, which is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.

In an embodiment of the present invention, the velocity vector includes a velocity magnitude and a velocity direction, where the arrow direction is a blood flow velocity direction of the target location, and the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines at least one of a size of the arrow or a color of the arrow according to the velocity magnitude.

In the embodiment of the present invention, the size of the arrow includes at least one of a length, a size, and a thickness of the arrow, which is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.

Optionally, the length of the arrow is proportional to the speed, the square of the speed, or the square root of the speed, which is specifically selected according to the actual situation, and the embodiment of the present invention is not specifically limited.

Illustratively, as shown in fig. 8, the speed directions of the arrow 1 and the arrow 2 are the same, the speed of the arrow 1 is 50cm/s, and the speed of the arrow 2 is 20cm/s, so the size of the arrow 1 is larger than that of the arrow 2.

In the embodiment of the present invention, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 uses the colors of the arrows with different degrees to characterize the velocity vector, i.e., determines the color of the head of the arrow according to the velocity direction, and determines the color of the tail of the arrow according to the velocity magnitude.

Illustratively, as shown in fig. 9, the head colors of the arrow 1 and the arrow 2 are dark, the directions of the arrow 1 and the arrow 2 are represented as the same, the tail colors of the arrow 2 and the arrow 3 are dark, and the speeds of the arrow 2 and the arrow 3 are represented as the same.

S209, the ultrasonic vector blood flow imaging device displays an arrow at the target position according to the display form so as to display the velocity vector at the target position in the ultrasonic blood flow image.

After the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the display form of the arrow according to the velocity vector, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 displays the arrow at the target position according to the display form to display the velocity vector at the target position in the ultrasound blood flow image.

In the embodiment of the present invention, the transmitting circuit 101 of the ultrasound vector blood flow imaging apparatus 10 adopts two sets of transmitting conditions to transmit in turn, so as to obtain a two-dimensional gray-scale image and a doppler color blood flow map, respectively, where the transmitting conditions refer to a transmitting waveform, a center frequency of a transmitting signal, a length (number of cycles) of the transmitting signal, and the like.

In the embodiment of the invention, the Doppler color blood flow graph is obtained after the Doppler ultrasonic blood flow calculation is carried out on the echo signal by the ultrasonic imaging blood flow imaging device.

In the embodiment of the invention, the ultrasonic blood flow image comprises a two-dimensional gray-scale image, a Doppler color blood flow graph or the two-dimensional gray-scale image and the Doppler color blood flow graph are displayed together, and the selection is specifically carried out according to the actual condition, and the embodiment of the invention is not specifically limited.

In the embodiment of the invention, the two-dimensional gray-scale image and the Doppler color blood flow graph form a traditional color Doppler display mode, namely, a B graph and the color blood flow are displayed together.

In the embodiment of the invention, the two-dimensional gray scale image, the Doppler color blood flow graph and the velocity vector form a new blood flow display mode, namely, the velocity vector is displayed on the color Doppler ultrasound while the traditional color Doppler ultrasound is displayed.

In the embodiment of the invention, the two-dimensional gray scale image and the velocity vector form another different display method, so that the two-dimensional structure of the B image can be more clearly seen, and the blood flow velocity vector can also be seen.

In the embodiment of the invention, a user can freely mark the position of the velocity vector to be displayed in the ultrasonic vector blood flow graph.

Fig. 11 is an exemplary diagram of an ultrasound vector blood flow imaging apparatus, which controls a probe to perform an ultrasound transmitting or receiving process through a transmitting/receiving selector switch, the ultrasound vector blood flow imaging apparatus utilizes a transmitting circuit to excite the probe to transmit a multi-angle focused wave to a scanned object, and then the ultrasound vector blood flow imaging apparatus utilizes a receiving circuit to excite the probe to receive a multi-angle receiving signal responding to the multi-angle focused wave, a beam forming module is used to perform beam forming on the multi-angle receiving signal to obtain multi-angle beam forming data, a wall filtering module is used to process the multi-angle beam forming data into a multi-angle echo signal, meanwhile, a grayscale image processing module is used to process the multi-angle beam forming data into a two-dimensional grayscale image, a blood flow doppler measurement module is used to perform doppler blood flow calculation on the multi-angle echo signal to obtain multiple sets of velocity components corresponding to a doppler color blood flow graph and the multi-angle echo signal, and finally, a blood flow velocity vector synthesis module is used to perform velocity vector synthesis on the multiple sets of velocity components to obtain an actual velocity vector of the scanned object.

It can be understood that, the ultrasonic vector blood flow imaging apparatus 10 determines a target region of a target scanning object in an ultrasonic blood flow image, and obtains at least two sets of velocity components corresponding to the target region, then processes the at least two sets of velocity components to obtain a velocity vector at a target position, and finally displays the velocity vector at the target position in the ultrasonic blood flow image.

An embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging device 10, where the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100, as shown in fig. 12, the method may include:

s301, the ultrasonic vector blood flow imaging device alternately transmits ultrasonic waves to the target scanning object at least twice according to preset time at least two transmitting angles.

The ultrasonic vector blood flow imaging method provided by the embodiment of the invention is suitable for a scene of ultrasonic vector blood flow imaging based on at least two emission angles and beam forming calculation.

Here, the description of S301 of the embodiment of the present invention is identical to that of S201, and is not repeated here.

S302, the ultrasonic vector blood flow imaging device receives echo signals of at least two receiving angles responding to ultrasonic waves.

Here, the description of S302 in the embodiment of the present invention is identical to that of S202, and is not repeated here.

And S303, generating an ultrasonic blood flow image according to the echo signal by the ultrasonic vector blood flow imaging device.

Here, the description of S303 in the embodiment of the present invention is identical to that of S203, and is not repeated here.

S304, the ultrasonic vector blood flow imaging device determines a target area of the target scanning object in the ultrasonic blood flow image according to the overlapping area of the echo signals.

Here, the description of S304 in the embodiment of the present invention is identical to that of S204, and is not repeated here.

S305, the ultrasonic vector blood flow imaging device acquires at least two groups of velocity components corresponding to the target area, wherein each group of velocity components comprises at least one velocity component.

Here, the description of S305 in the embodiment of the present invention is identical to that of S205, and is not repeated here.

S306, the ultrasonic vector blood flow imaging device selects at least two velocity components at the target position from the at least two groups of velocity components.

In the embodiment of the present invention, the beam forming method is that, for the velocity components at the same position and at different angles obtained by the same pixel point, the processor 105 of the ultrasonic vector blood flow imaging device 10 determines a first velocity component and a second velocity component at a target position from at least two sets of velocity components; the first and second velocity components are determined as at least two velocity components.

Specifically, the processor 105 of the ultrasonic vector blood flow imaging device 10 selects a velocity component corresponding to a first pixel point from the first group of velocity components, and determines the velocity component corresponding to the first pixel point as a first velocity component corresponding to a target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; the processor 105 of the ultrasonic vector blood flow imaging device 10 selects a velocity component corresponding to the second pixel point from the second group of velocity components, and determines the velocity component corresponding to the second pixel point as a second velocity component corresponding to the target position, where the second pixel point is any one of all pixel points corresponding to the second group of velocity components, and the positions of the first pixel point and the second pixel point coincide.

S307, the ultrasonic vector blood flow imaging device synthesizes at least two velocity components and determines a velocity vector at a target position, wherein the target position is a position of a pixel point to be displayed in a target area.

Here, the description of S307 in the embodiment of the present invention is identical to the description of S207, and is not described again here.

And S308, the ultrasonic vector blood flow imaging device determines the display form of the arrow according to the velocity vector.

Here, the description of S308 of the embodiment of the present invention is identical to that of S208, and is not repeated here.

S309, displaying an arrow at the target position according to the display form by the ultrasonic vector blood flow imaging device so as to display the velocity vector at the target position in the ultrasonic blood flow image.

Here, the description of S309 in the embodiment of the present invention is identical to that of S209, and is not described here again.

An embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging device 10, where the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100, as shown in fig. 13, the method may include:

s401, the ultrasonic vector blood flow imaging device transmits ultrasonic waves to a target scanning object at least twice at a transmitting angle.

The ultrasonic vector blood flow imaging method provided by the embodiment of the invention is suitable for the ultrasonic vector blood flow imaging scene of the ultrasonic vector blood flow imaging device 10 based on a transmitting angle and an interpolation algorithm.

In the embodiment of the present invention, the processor 105 of the ultrasonic vector blood flow imaging apparatus 10 adjusts the transmission angle by adjusting the size and the position of the transmission aperture of the ultrasonic probe 100, and then the transmission circuit 101 of the ultrasonic vector blood flow imaging apparatus 10 performs at least two times of ultrasonic scanning processes on the target scanning object at one transmission angle.

S402, the ultrasonic vector blood flow imaging device receives echo signals of at least two receiving angles responding to ultrasonic waves.

Here, the description of S402 in the embodiment of the present invention is identical to that of S202, and is not described herein again.

And S403, generating an ultrasonic blood flow image by the ultrasonic vector blood flow imaging device according to the echo signal.

Here, the description of S403 in the embodiment of the present invention is identical to that of S203, and is not repeated here.

S404, the ultrasonic vector blood flow imaging device determines a target area of the target scanning object in the ultrasonic blood flow image according to the overlapping area of the echo signals.

Here, the description of S404 in the embodiment of the present invention is identical to that of S204, and is not repeated here.

S405, the ultrasonic vector blood flow imaging device obtains at least two groups of speed components corresponding to the target area, wherein each group of speed components comprises at least one speed component.

Here, the description of S405 in the embodiment of the present invention is identical to that of S205, and is not repeated here.

S406, the ultrasonic vector blood flow imaging device performs interpolation calculation on the at least two groups of velocity components to determine at least two velocity components at the target position.

Here, the description of S406 in the embodiment of the present invention is identical to that of S206, and is not repeated here.

S407, the ultrasonic vector blood flow imaging device synthesizes at least two velocity components, and determines a velocity vector at a target position, wherein the target position is a position of a pixel point to be displayed in a target area.

Here, the description of S407 of the embodiment of the present invention is identical to that of S207, and is not repeated here.

And S408, the ultrasonic vector blood flow imaging device determines the display form of the arrow according to the velocity vector.

Here, the description of S408 of the embodiment of the present invention is identical to that of S208, and is not repeated here.

And S409, displaying an arrow at the target position according to the display form by the ultrasonic vector blood flow imaging device so as to display the velocity vector at the target position in the ultrasonic blood flow image.

Here, the description of S409 of the embodiment of the present invention is identical to that of S209, and is not repeated here.

An embodiment of the present invention provides an ultrasound vector blood flow imaging method, which is applied to an ultrasound vector blood flow imaging device 10, where the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100, as shown in fig. 14, the method may include:

s501, the ultrasonic vector blood flow imaging device transmits ultrasonic waves to a target scanning object at least twice at a transmitting angle.

The ultrasonic vector blood flow imaging method provided by the embodiment of the invention is suitable for the ultrasonic vector blood flow imaging scene of the ultrasonic vector blood flow imaging device 10 based on a transmitting angle and a beam forming algorithm.

Here, the description of S501 of the embodiment of the present invention is identical to that of S401, and is not repeated here.

S502, the ultrasonic vector blood flow imaging device receives echo signals of at least two receiving angles responding to ultrasonic waves.

Here, the description of S502 in the embodiment of the present invention is identical to that of S402, and is not described herein again.

And S503, generating an ultrasonic blood flow image according to the echo signal by the ultrasonic vector blood flow imaging device.

Here, the description of S503 of the embodiment of the present invention is identical to that of S403, and is not repeated here.

S504, the ultrasonic vector blood flow imaging device determines a target area of the target scanning object in the ultrasonic blood flow image according to the overlapping area of the echo signals.

Here, the description of S504 in the embodiment of the present invention is identical to that of S404, and is not repeated here.

S505, the ultrasonic vector blood flow imaging device obtains at least two groups of speed components corresponding to the target area, wherein each group of speed components comprises at least one speed component.

Here, the description of S505 of the embodiment of the present invention is identical to the description of S405, and is not repeated here.

S506, the ultrasonic vector blood flow imaging device selects at least two velocity components at the target position from at least two groups of velocity components.

Here, the description of S506 of the embodiment of the present invention is identical to that of S306, and is not repeated here.

And S507, synthesizing the at least two velocity components by the ultrasonic vector blood flow imaging device, and determining a velocity vector at a target position, wherein the target position is a position of a pixel point to be displayed in a target area.

Here, the description of S507 in the embodiment of the present invention is identical to that of S407, and is not repeated here.

And S508, determining the display form of the arrow according to the velocity vector by the ultrasonic vector blood flow imaging device.

Here, the description of S508 in the embodiment of the present invention is identical to that of S408, and is not described herein again.

S509, the ultrasonic vector blood flow imaging device displays an arrow at the target position according to the display form so as to display the velocity vector at the target position in the ultrasonic blood flow image.

Here, the description of S509 in the embodiment of the present invention is identical to that of S409, and is not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. The term "comprising", without further limitation, means that the element so defined is not excluded from the group of processes, methods, articles, or systems that include the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Industrial applicability

In the embodiment of the invention, the ultrasonic vector blood flow imaging device determines the target area of the target scanning object in the ultrasonic blood flow image, acquires at least two groups of speed components corresponding to the target area, processes the at least two groups of speed components to obtain the speed vector at the target position, and finally displays the speed vector at the target position in the ultrasonic blood flow image.

Claims

1. An ultrasonic vector blood flow imaging method is applied to an ultrasonic vector blood flow imaging device, and the method comprises the following steps:

synthesizing the at least two velocity components to determine a velocity vector at the target location;

displaying the velocity vector at the target location in the ultrasound blood flow image;

wherein the processing the at least two sets of velocity components to determine at least two velocity components at the target location comprises:

under the condition that the positions of corresponding pixel points in the at least two groups of velocity components are not completely overlapped, performing interpolation calculation on the at least two groups of velocity components to determine at least two velocity components at the target position;

and under the condition that the positions of corresponding pixel points in the at least two groups of speed components are completely overlapped, selecting at least two speed components at the target position from the at least two groups of speed components.

2. The method of claim 1, wherein said interpolating said at least two sets of velocity components to determine at least two velocity components at said target location comprises:

3. The method of claim 2, wherein said determining a corresponding first velocity component at the target location from a first set of velocity components comprises:

4. The method of claim 1, wherein said interpolating said at least two sets of velocity components to determine at least two velocity components at said target location comprises:

5. The method of claim 4, wherein said interpolating the first set of velocity components to determine a corresponding first velocity component at the target location comprises:

acquiring at least two adjacent second pixel points at the target position from all the corresponding pixel points in the second group of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components;

6. The method of claim 1, wherein said selecting at least two velocity components at the target location from the at least two sets of velocity components comprises:

7. The method of claim 1, wherein said displaying the velocity vector at the target location in the ultrasound blood flow image comprises:

determining a display form of an arrow according to the speed vector;

8. The method of claim 7, wherein the velocity vector comprises a velocity magnitude and a velocity direction, and wherein determining the display form of the arrow from the velocity vector comprises:

determining the speed direction as the direction of the arrow;

9. The method of any of claims 1 to 8, wherein the determining a target region of a target scanning object in an ultrasound flow image further comprises:

receiving echo signals of at least two reception angles in response to the ultrasonic waves;

and generating the ultrasonic blood flow image according to the echo signal.

10. The method of any of claims 1 to 8, wherein the determining a target region of a target scanning subject in an ultrasound blood flow image is preceded by:

and generating the ultrasonic blood flow image according to the echo signals.

11. The method of claim 9, wherein said transmitting ultrasound waves to said target scan object at least twice at least two transmit angles, respectively, comprises:

and transmitting ultrasonic waves to the target scanning object at least twice alternately according to preset time at the at least two transmitting angles.

12. The method of claim 9, wherein said obtaining at least two sets of velocity components corresponding to said target region comprises:

13. The method of claim 9, wherein the determining a target region of a target scan object in an ultrasound blood flow image comprises:

14. An ultrasound vector blood flow imaging apparatus, the ultrasound vector blood flow imaging apparatus comprising:

a probe;

a receiving circuit that receives an ultrasonic echo returned from the target scan object through the probe to obtain an echo signal;

a display that displays the ultrasound blood flow image;

wherein the processor specifically executes the following steps: determining a target area of a target scanning object in an ultrasonic blood flow image; acquiring at least two groups of speed components corresponding to the target area, wherein each group of speed components comprises at least one speed component; processing the at least two groups of velocity components, and determining at least two velocity components at a target position, wherein the target position is a position of a pixel point to be displayed in the target area; synthesizing the at least two velocity components to determine a velocity vector at the target location; displaying the velocity vector at the target location in the ultrasound blood flow image;

the processor is further configured to perform interpolation calculation on the at least two sets of velocity components under the condition that the positions of corresponding pixel points in the at least two sets of velocity components are not completely overlapped, and determine at least two velocity components at the target position; and the speed calculation module is further used for selecting at least two speed components at the target position from the at least two groups of speed components under the condition that the positions of corresponding pixel points in the at least two groups of speed components are completely overlapped.

15. The ultrasound vector flow imaging apparatus according to claim 14,

the processor is further configured to determine a corresponding first velocity component at the target location from a first set of velocity components, wherein the first set of velocity components is any one of the at least two sets of velocity components, and the first velocity component is one of the first set of velocity components; interpolating a second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components that is different from the first set of velocity components; determining the first and second velocity components as the at least two velocity components.

16. The ultrasound vector blood flow imaging apparatus according to claim 15,

the processor is further configured to determine a first pixel point from all pixel points corresponding to the first group of velocity components, and determine a velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; acquiring at least two second pixel points adjacent to the target position, wherein the at least two second pixel points are at least two pixel points in all pixel points corresponding to the second group of velocity components; and carrying out interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity components.

17. The ultrasound vector flow imaging apparatus according to claim 16,

the processor is further configured to interpolate a first set of velocity components to determine a corresponding first velocity component at the target position, where the first set of velocity components is any one of the at least two sets of velocity components; interpolating a second set of velocity components to determine a corresponding second velocity component at the target location, wherein the second set of velocity components is at least one other set of velocity components of the at least two sets of velocity components that is different from the first set of velocity components; determining the first and second velocity components as the at least two velocity components.

18. The ultrasound vector flow imaging apparatus according to claim 17,

the processor is further configured to obtain at least two adjacent first pixel points at the target position from all corresponding pixel points in the first group of velocity components, where the at least two first pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components; performing interpolation calculation on at least two velocity components corresponding to the at least two first pixel points to obtain the first velocity components; acquiring at least two adjacent second pixel points at the target position from all the corresponding pixel points in the second group of velocity components, wherein the at least two second pixel points are at least two pixel points in all the pixel points corresponding to the first group of velocity components; and carrying out interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity components.

19. The ultrasound vector flow imaging apparatus according to claim 14,

the processor is further configured to select a velocity component corresponding to a first pixel point from a first group of velocity components, and determine the velocity component corresponding to the first pixel point as a first velocity component corresponding to the target position, where the first pixel point is any one of all pixel points corresponding to the first group of velocity components; and selecting a velocity component corresponding to a second pixel point from a second group of velocity components, and determining the velocity component corresponding to the second pixel point as a second velocity component corresponding to the target position, wherein the second pixel point is any one of all pixel points corresponding to the second group of velocity components, and the positions of the first pixel point and the second pixel point are overlapped.

20. The ultrasound vector flow imaging apparatus according to claim 14,

the processor is further used for determining the display form of the arrow according to the speed vector;

the display is further used for displaying the arrow at the target position according to the display form so as to display the velocity vector at the target position.

21. The ultrasound vector blood flow imaging apparatus of claim 20, wherein the velocity vector comprises a velocity magnitude and a velocity direction,

the processor further configured to determine the speed direction as the direction of the arrow; determining at least one of a size of the arrow and a color of the arrow according to the velocity magnitude.

22. The ultrasound vector blood flow imaging apparatus according to any one of claims 14 to 21,

the transmitting circuit is specifically configured to transmit ultrasonic waves to the target scanning object at least twice at least two transmission angles, respectively;

23. The ultrasound vector blood flow imaging apparatus according to any one of claims 14 to 21,

the transmitting circuit is further used for transmitting ultrasonic waves to the target scanning object at least twice at a transmitting angle;

the receiving circuit is further used for receiving echo signals of at least two receiving angles responding to the ultrasonic wave;

24. The ultrasound vector blood flow imaging apparatus according to claim 22,

the transmitting circuit is further configured to alternately transmit at least two ultrasonic waves to the target scanning object at the at least two transmitting angles according to a preset time.

25. The ultrasound vector flow imaging apparatus according to claim 23,

the processor is further configured to perform doppler ultrasound blood flow calculation on the echo signal corresponding to the target region to obtain the at least two sets of velocity components.

26. The ultrasound vector flow imaging apparatus according to claim 23,

the processor is further configured to determine the target region according to an overlapping region of the echo signals.

27. A storage medium having stored thereon a computer program for an ultrasound vector blood flow imaging apparatus, which computer program, when being executed by a processor, is adapted to carry out the method of any one of claims 1-13.