WO2020041986A1 - 一种超声向量血流成像方法及装置、存储介质 - Google Patents

一种超声向量血流成像方法及装置、存储介质 Download PDF

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Publication number
WO2020041986A1
WO2020041986A1 PCT/CN2018/102789 CN2018102789W WO2020041986A1 WO 2020041986 A1 WO2020041986 A1 WO 2020041986A1 CN 2018102789 W CN2018102789 W CN 2018102789W WO 2020041986 A1 WO2020041986 A1 WO 2020041986A1
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Prior art keywords
speed
components
velocity
blood flow
ultrasound
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PCT/CN2018/102789
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English (en)
French (fr)
Inventor
杜宜纲
杨波
范伟
王凯
杨鹏飞
Original Assignee
深圳迈瑞生物医疗电子股份有限公司
深圳迈瑞科技有限公司
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Application filed by 深圳迈瑞生物医疗电子股份有限公司, 深圳迈瑞科技有限公司 filed Critical 深圳迈瑞生物医疗电子股份有限公司
Priority to CN201880095944.8A priority Critical patent/CN112469337B/zh
Priority to PCT/CN2018/102789 priority patent/WO2020041986A1/zh
Publication of WO2020041986A1 publication Critical patent/WO2020041986A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/06Measuring blood flow

Definitions

  • the invention relates to the field of ultrasound imaging, in particular to a method and device for ultrasound vector blood flow imaging, and a storage medium.
  • ultrasound vector blood flow imaging technology can calculate the size and direction of bleeding flow velocity without the need for angle correction, and it is independent of angle, so it can be used as an important basis for diagnosing vascular diseases .
  • ultrasound vector blood flow imaging technology usually depends on high-end ultrasound platforms to achieve high-quality vector blood flow imaging, and the imaging process is complicated.
  • embodiments of the present invention expect to provide an ultrasound vector blood flow imaging method and device, and a storage medium, which can reduce the complexity of the ultrasound vector blood flow imaging process.
  • 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.
  • the method includes:
  • 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, and the method includes:
  • each set of speed components includes at least one speed component
  • the velocity vector is displayed at the target position in the ultrasound blood flow image.
  • processing the at least two sets of velocity components to determine at least two velocity components at a target position includes:
  • Interpolation calculation is performed on the at least two sets of velocity components to determine at least two velocity components at the target position.
  • processing the at least two sets of velocity components to determine at least two velocity components at a target position includes:
  • At least two velocity components at the target position are selected from the at least two sets of velocity components.
  • performing interpolation calculation on the at least two sets of velocity components to determine at least two velocity components at the target position includes:
  • a first speed component corresponding to the target position is determined from a first set of speed components, wherein the first set of speed components is any one of the at least two sets of speed components, and the first speed Component is one of the velocity components in the first set of velocity components;
  • the first speed component and the second speed component are determined as the at least two speed components.
  • determining the first speed component corresponding to the target position from the first set of speed components includes:
  • performing interpolation calculation on the second set of speed components to determine the corresponding second speed component at the target position includes:
  • Interpolation calculation is performed on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity component.
  • performing interpolation calculation on the at least two sets of velocity components to determine at least two velocity components at the target position includes:
  • the first speed component and the second speed component are determined as the at least two speed components.
  • performing interpolation calculation on the first group of speed components to determine a corresponding first speed component at the target position includes:
  • performing interpolation calculation on the second set of speed components to determine the corresponding second speed component at the target position includes:
  • Interpolation calculation is performed on at least two velocity components corresponding to the at least two second pixel points to obtain the second velocity component.
  • the selecting at least two velocity components at the target position from the at least two sets of velocity components includes:
  • the displaying the velocity vector at the target position in the ultrasound blood flow image includes:
  • the arrow is displayed at the target position according to the display form to display the velocity vector at the target position.
  • the speed vector includes a speed magnitude and a speed direction
  • determining the display form of the arrow according to the speed vector includes:
  • At least one of a size of the arrow and a color of the arrow is determined according to the magnitude of the speed.
  • the method before the determining the target area of the target scan object in the ultrasound blood flow image, the method further includes:
  • the method before the determining the target area of the target scan object in the ultrasound blood flow image, the method further includes:
  • the transmitting at least two ultrasonic waves to the target scanning object at least two transmitting angles respectively includes:
  • the acquiring at least two sets of velocity components corresponding to the target region includes:
  • Doppler ultrasound blood flow calculation is performed on the echo signals corresponding to the target area to obtain the at least two sets of velocity components.
  • the determining a target area of the target scan object in the ultrasound blood flow image includes:
  • the target region is determined according to an overlapping region of the echo signals.
  • an ultrasound vector blood flow imaging device in a second aspect, provides an ultrasound vector blood flow imaging device, and the ultrasound vector blood flow imaging device includes:
  • a transmitting circuit that 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 signal to obtain an ultrasound blood flow image of the target scanned object
  • the processor specifically performs the following steps: determining a target region of the target scan object in the ultrasound blood flow image; obtaining at least two sets of velocity components corresponding to the target region, wherein each set of velocity components includes at least one velocity component; Processing the at least two sets of speed components to determine at least two speed components at a target position, where the target position is a position of a pixel point to be displayed in the target area; and performing the at least two speed components Synthesize to determine a velocity vector at the target position; display the velocity vector at the target position in the ultrasound blood flow image.
  • the processor is further configured to perform interpolation calculation on the at least two sets of velocity components to determine at least two velocity components at the target position.
  • 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.
  • the processor is further configured to determine a first velocity component corresponding to the target position from a first group of velocity components, wherein the first group of velocity components is the Any one of at least two sets of speed components, the first speed component is one of the first set of speed components; interpolation calculation is performed on the second set of speed components to determine a corresponding first position at the target position.
  • Two speed components wherein the second set of speed components is at least one set of speed components different from the first set of speed components in the at least two sets of speed components; combining the first speed component with the The second speed component is determined as the at least two speed components.
  • the processor is further configured to determine a first pixel point from all the pixel points corresponding to the first group of velocity components, and set a velocity component corresponding to the first pixel point. Determine the first velocity component corresponding to the target position, wherein the first pixel point is any one of all the pixel points corresponding to the first set of velocity components; obtain a phase corresponding to the target position Adjacent at least two second pixel points, wherein the at least two second pixel points are at least two pixel points among all the pixel points corresponding to the second set of velocity components; At least two velocity components corresponding to the pixels are subjected to interpolation calculation to obtain the second velocity component.
  • the processor is further configured to perform interpolation calculation on a first group of velocity components to determine a corresponding first velocity component at the target position, where the first group of velocity components is Any one of the at least two sets of speed components; performing interpolation calculation on the second set of speed components to determine a corresponding second speed component at the target position, wherein the second set of speed components is the at least Among the two sets of speed components, different from the other at least one set of speed components in the first set of speed components; determining the first speed component and the second speed component as the at least two speed components.
  • the processor is further configured to obtain at least two first pixel points adjacent to the target position from all corresponding pixel points in the first set of velocity components, wherein, the at least two first pixel points are at least two pixel points among all the pixel points corresponding to the first set of speed components; and the at least two speed components corresponding to the at least two first pixel points are performed.
  • Interpolation calculation to obtain the first velocity component obtaining at least two second pixel points adjacent to the target position from all corresponding pixel points in the second set of velocity components, wherein the at least two The second pixel point is at least two pixel points among all the pixel points corresponding to the first set of speed components; interpolation calculation is performed on at least two speed components corresponding to the at least two second pixel points to obtain the first Two velocity components.
  • the processor is further configured to select a velocity component corresponding to the first pixel point from the first set of velocity components, and determine the velocity component corresponding to the first pixel point as the desired velocity component.
  • the first speed component corresponding to the target position wherein the first pixel point is any one of all the pixel points corresponding to the first set of speed components; and a second pixel is selected from the second set of speed components.
  • 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 position according to the display form to display the velocity vector at the target position.
  • the velocity vector includes a velocity magnitude and a velocity direction
  • the processor is further configured to determine the speed direction as the direction of the arrow; and determine at least one of a size of the arrow and a color of the arrow according to the magnitude of the speed.
  • the transmitting circuit is specifically configured to transmit the ultrasonic waves to the target scanning object at least two times at least two transmitting angles respectively;
  • the receiving circuit is specifically configured to receive echo signals in response to at least two receiving angles of the ultrasonic wave
  • the processor is further configured to generate the ultrasound blood flow image according to the echo signal.
  • the transmitting circuit is further configured to transmit at least two ultrasonic waves to the target scanning object at an emission angle;
  • the receiving circuit is further configured to receive an echo signal in response to at least two receiving angles of the ultrasonic wave;
  • the processor is further configured to generate the ultrasound blood flow image according to the echo signal.
  • the transmitting circuit is further configured to alternately transmit at least two ultrasound waves to the target scanning object at the at least two transmission angles according to a preset time.
  • the processor is further configured to perform Doppler ultrasound blood flow calculation on the echo signal corresponding to the target area to obtain the at least two sets of velocity components.
  • the processor is further configured to determine the target area according to an overlapping area of the echo signals.
  • an embodiment of the present invention provides a storage medium on which a computer program is stored, which is applied to an ultrasound vector blood flow imaging device, and when the computer program is executed by a processor, the method according to the first aspect is implemented.
  • Embodiments of the present invention provide an ultrasound vector blood flow imaging method and device, and a storage medium.
  • the method includes: determining a target area of a target scan object in an ultrasound blood flow image; and obtaining at least two sets of velocity components corresponding to the target area, where: Each set of speed components includes at least one speed component; processing at least two sets of speed components to determine at least two speed components at a target position, where the target position is the position of a pixel to be displayed in the target area; and at least two speeds
  • the components are synthesized to determine the velocity vector at the target position; the velocity vector is displayed at the target position in the ultrasound blood flow image.
  • the ultrasound vector blood flow imaging device determines the target area of the target scanning object in the ultrasound blood flow image, and obtains at least two sets of velocity components corresponding to the target area, and then processes at least two sets of velocity components to obtain the target position The velocity vector is finally displayed at the target position in the ultrasound blood flow image. Since at least two sets of velocity components are processed to realize the ultrasound vector blood flow imaging process, there is no need to rely on a high-end ultrasound platform to complicate the receiving beam. Processing, thereby reducing the complexity of the ultrasound vector blood flow imaging process.
  • FIG. 1 is a schematic diagram of an ultrasound vector blood flow imaging device 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 an exemplary schematic diagram of transmitting focused waves with different transmitting apertures according to an embodiment of the present invention
  • FIG. 4 is an exemplary transmission schematic diagram of alternately transmitting two different transmission angles for the same area according to an embodiment of the present invention
  • FIG. 5 is a schematic emission diagram of an exemplary probe edge position using different emission angles according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an exemplary speed-angle synthesis according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of calculating a velocity vector by interpolation according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an exemplary speed vector represented by an arrow color according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an exemplary velocity vector represented by an arrow thickness according to an embodiment of the present invention.
  • FIG. 10 is a second flowchart of an ultrasound vector blood flow imaging method according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an exemplary ultrasound vector blood flow imaging device according to an embodiment 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 fifth flowchart of an ultrasound vector blood flow imaging method according to an embodiment of the present invention.
  • an embodiment of the present invention provides an ultrasound vector blood flow imaging method.
  • the method is applied to an ultrasound vector blood flow imaging device 10.
  • the ultrasound vector blood flow imaging device 10 may include an ultrasound probe 100, a transmitting circuit 101, The transmission / reception selection switch 102, the reception circuit 103, the beam combining circuit 104, the processor 105, and the display 106.
  • the transmitting circuit 101 may excite the ultrasonic probe 100 to transmit an ultrasonic wave to a target scanning object.
  • the receiving circuit 103 may receive an ultrasonic echo returned from the target scanning object through the ultrasonic probe 100 to obtain an echo signal / data.
  • the echo signal / data is sent to the processor 105 after being subjected to beam combining processing by the beam combining circuit 104.
  • the processor 105 processes the echo signal / data to acquire the tissue-related parameters and the ultrasound blood flow image of the target scanning object.
  • the ultrasound blood flow image obtained by the processor 105 may be stored in the memory 107. These ultrasound blood flow images can be displayed on the display 106.
  • the display 106 of the aforementioned ultrasound vector blood flow imaging device 10 may be a touch display screen, a liquid crystal display, or the like, or may be a liquid crystal display, a television, etc., which are independent of the ultrasound vector blood flow imaging device 10
  • Stand-alone display devices can also be displays on electronic devices such as mobile phones and tablets.
  • the memory 107 of the aforementioned ultrasound vector blood flow imaging device 10 may be a flash memory card, a solid state memory, a hard disk, or the like.
  • An embodiment of the present application further provides a computer-readable storage medium.
  • the computer-readable storage medium stores a plurality of program instructions. After the plurality of program instructions are invoked and executed by the processor 105, the ultrasound in the embodiments of the present application can be executed. Some or all steps in vector blood flow imaging or any combination of these steps.
  • the computer-readable storage medium may be the memory 107, which may be a non-volatile storage medium such as a flash memory card, a solid state memory, a hard disk, and the like.
  • the processor 105 of the aforementioned ultrasound vector blood flow imaging apparatus 10 may be implemented by software, hardware, firmware, or a combination thereof, and a circuit, a single or multiple application-specific integrated circuits (ASIC) , 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 can execute Corresponding steps of the ultrasound vector blood flow imaging method in the foregoing embodiments.
  • ASIC application-specific integrated circuits
  • the ultrasound vector blood flow imaging method in the present application is described in detail below, please refer to FIG. 2.
  • S101 Determine a target area of a target scanning object in an ultrasound blood flow image.
  • An ultrasound vector blood flow imaging method provided by an embodiment of the present invention is applicable to a scenario in which ultrasound vector blood flow imaging is performed based on an ultrasound emission mode.
  • the ultrasonic wave includes a focused wave, a plane wave, or a divergent wave, and is specifically selected according to an actual situation, and the embodiment of the present invention is not specifically limited.
  • the ultrasound vector blood flow imaging device 10 is provided with an ultrasound probe 100, and the ultrasound vector blood flow imaging device 10 determines one transmission angle or at least two transmission angles by adjusting the size and position of the transmission aperture of the ultrasonic probe 100
  • the transmitting circuit 101 in the ultrasound vector blood flow imaging device 10 transmits at least two ultrasound waves to the target scanning object at one transmission angle, and then the receiving circuit 103 receives echo signals in response to at least two receiving angles of the ultrasound waves, and the ultrasound vector blood flow
  • the processor 105 in the imaging device 10 determines an ultrasound blood flow image based on the echo signal.
  • the ultrasound vector blood flow imaging device 10 is provided with an ultrasound probe 100.
  • the ultrasound vector blood flow imaging device 10 determines at least two transmission angles by adjusting the size and position of the transmission aperture of the ultrasound probe 100;
  • the transmitting circuit 101 in the stream imaging device 10 may alternately transmit at least two ultrasonic waves to the target scanning object at least two transmitting angles at a preset time, and then the receiving circuit 103 receives a response in response to at least two receiving angles of the ultrasonic waves.
  • Processor 105 in the ultrasound vector blood flow imaging device 10 determines an ultrasound blood flow image based on the echo signal.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 may perform beam synthesis and wall filtering on the received ultrasound echo signal to obtain an echo signal corresponding to the target area.
  • the processor 105 determines the scanning position of the target scanning object according to the intensity of the transmitted sound field, so that when the ultrasound vector blood flow imaging device 10 performs scanning at the determined scanning position, the target area where the target scanning object is located is responsive. Overlapping areas of echo signals for at least two receiving angles of the ultrasound.
  • the target area of the subject in the ultrasound blood flow image is the overlapping scanning area of the focused waves at two angles represented by the dashed diagonal line.
  • the target scanning object is a vascular tissue, which is specifically selected according to actual conditions, and the embodiment of the present invention does not specifically limit it.
  • one of the at least two emission angles is different.
  • the emission angles corresponding to the emission apertures 2 at the left edge position and the right edge position of the probe are different.
  • the emission angles are vertical and leftward; Vertical and right.
  • a wider blood flow imaging area can be obtained by transmitting two different emission angles to two edge positions of the ultrasound probe 100.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 determines the target area of the target scanned object in the ultrasound blood flow image, the processor 105 of the ultrasound vector blood flow imaging device 10 acquires at least two sets of speeds corresponding to the target area. Weight.
  • the processor 105 in the ultrasound vector blood flow imaging device 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.
  • the calculation formula for Doppler ultrasound blood flow is:
  • c is the ultrasonic propagation speed
  • f 0 is the center frequency of the transmitted signal of the probe
  • f PRF is the repetition frequency of the transmitted pulse. Is the real part operator, Is the operator of the imaginary part.
  • N is the number of shots at the same position of the target scanning object
  • j is an imaginary unit.
  • the calculated v is the velocity component of the actual velocity of the target scanning object along multiple emission angles.
  • Doppler ultrasound blood flow calculation is used to calculate the velocity component corresponding to each calculation point at each launch angle, and then each velocity component at each launch angle is obtained, and finally each velocity component is Make up at least two sets of velocity components.
  • S103 Process at least two sets of velocity components to determine at least two velocity components at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 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 area, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 needs to process at least two sets of velocity components to determine the target. There are at least two velocity components at the position of the pixel to be displayed in the area.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the at least two sets of velocity components to determine the target position.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the at least two sets of velocity components to determine the target position.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the at least two sets of velocity components to determine the target position.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the at least two sets of velocity components to determine the target position.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the at least two sets of velocity components to determine the target position.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines at least two velocity components at a target position from at least two velocity components according to a beam combining manner of a pixel.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 uses an interpolation calculation method, and one of the processes of determining at least two velocity components at the target position is: The processor 105 determines a first speed component corresponding to the target position from the first set of speed components, where the first set of speed components is any one of at least two sets of speed components, and the first speed component is the first set One of the velocity components; performing interpolation calculation on the second set of velocity components to determine a corresponding second velocity component at the target position, wherein the second set of velocity components is different from the first set of velocity components in at least two sets of velocity components The other at least one set of speed components; determining the first speed component and the second speed component as at least two speed components.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 determines a first pixel point from all the pixel points corresponding to the first group of velocity components, and determines the velocity component corresponding to the first pixel point as the corresponding first pixel at the target position.
  • a velocity component where the first pixel is any one of all pixels corresponding to the first set of velocity components; after that, the processor 105 of the ultrasound vector blood flow imaging device 10 acquires at least two adjacent to the target position Second pixel points, wherein at least two second pixel points are at least two pixel points of all the pixel points corresponding to the second set of velocity components; and performing at least two velocity components corresponding to the at least two second pixel points Interpolation calculation to obtain the second velocity component.
  • 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 multiple second angle calculation points, which is not specifically limited in the embodiment of the present invention.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 uses an interpolation calculation method, and another process of determining at least two velocity components at the target position is: The processor 105 performs interpolation calculation on the first group of velocity components to determine a corresponding first velocity component at the target position, where the first group of velocity components is any one of at least two groups of velocity components; an ultrasound vector blood flow imaging device The processor 105 of 10 performs interpolation calculation on the second set of speed components to determine a corresponding second speed component at the target position, where the second set of speed components is at least two other speed components that are different from the other of the first set of speed components. A set of velocity components; the processor 105 of the ultrasound vector blood flow imaging device 10 determines the first velocity component and the second velocity component as at least two velocity components.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 obtains at least two first pixel points adjacent to each other at a target position from all corresponding pixel points in the first set of velocity components, where at least two first pixels Point is at least two pixels out of all pixels corresponding to the first set of velocity components; interpolation calculation is performed on at least two velocity components corresponding to at least two first pixel points to obtain a first velocity component; ultrasound vector blood flow imaging The processor 105 of the device 10 obtains at least two second pixel points adjacent to each other at the target position from all corresponding pixel points in the second group of speed components, where at least two second pixel points correspond to the first group of speed components. At least two pixel points among all the pixel points of the pixel; perform interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain a second velocity component.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 can determine at least two velocity components at the target position without performing interpolation calculation. That is, the positions of corresponding pixel points in the at least two sets of velocity components are completely coincident. In this way, at least two velocity components can be obtained on the same pixel, and the at least two velocity components are synthesized to determine the final velocity vector of the pixel.
  • the process of determining at least two velocity components at the target position is: the processor 105 of the ultrasound vector blood flow imaging device 10 determines the first velocity component and the second velocity component at the target position from at least two sets of velocity components; and The first speed component and the second speed component are determined as at least two speed components.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 selects the speed component corresponding to the first pixel point from the first set of speed components, and determines the speed component corresponding to the first pixel point as the first corresponding point at the target position.
  • a velocity component where the first pixel is any one of all pixels corresponding to the first group of velocity components; the processor 105 of the ultrasound vector blood flow imaging device 10 selects the second pixel from the second group of velocity components.
  • the corresponding speed component, and the speed component corresponding to the second pixel point is determined as the corresponding second speed component at the target position, where the second pixel point is any one of all the pixel points corresponding to the second set of speed components ,
  • the positions of the first pixel point and the second pixel point are coincident.
  • S104 Synthesize at least two sets of velocity components to determine a velocity component at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 After the processor 105 of the ultrasound vector blood flow imaging device 10 obtains at least two sets of velocity components corresponding to the target area, the processor 105 of the ultrasound vector blood flow imaging device 10 must synthesize at least two velocity components to determine the target. Velocity component at position.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 combines the first velocity component and the second velocity component to obtain a velocity vector at a target position.
  • FIG. 6 shows two velocity components corresponding to two different launch angles at the target position, and the two velocity components are angularly synthesized, and the synthesized velocity vector is the velocity vector of the target position.
  • the ultrasound vector blood flow imaging device transmits two focused waves under the transmission angle 1 and the transmission angle 2, and at this time, the echo signal corresponding to the transmission angle 1 and the echo signal corresponding to the transmission angle 2
  • the overlapping area between them is the target area, and the calculation point corresponding to the transmission angle 1 is used as the target position.
  • the calculation point A1 of the transmission angle 1 in the overlap area is determined, and the four calculation points corresponding to the transmission angle 2 adjacent to A1 are found. Perform a 4-point interpolation calculation on these 4 calculation points to obtain the velocity component corresponding to the transmission angle 2 at A1, and synthesize the velocity component corresponding to the transmission angle 2 and the velocity component corresponding to the transmission angle 1 to obtain a velocity vector at the A1 position.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 After the processor 105 of the ultrasound vector blood flow imaging device 10 determines the velocity vector at the target position, the processor 105 of the ultrasound vector blood flow imaging device 10 will display the velocity vector at the target position in the ultrasound blood flow image. .
  • the processor 105 of the ultrasound vector blood flow imaging device 10 represents the velocity vector in the ultrasound blood flow image in the form of an arrow.
  • the ultrasound vector blood flow imaging device 10 uses the preset display strategy in the ultrasound blood flow image. An arrow appears at the target position of.
  • the ultrasound blood flow image includes a two-dimensional grayscale image, a Doppler color blood flow image, or a two-dimensional grayscale image and a Doppler color blood flow image to be displayed together, and is specifically selected according to actual conditions.
  • the embodiments of the invention are not specifically limited.
  • the velocity vector includes a velocity magnitude and a velocity direction, wherein the arrow direction is the blood flow velocity direction of the target position, and at least one of the length of the arrow, the size of the arrow, and the thickness of the arrow is determined according to the velocity.
  • the length of the arrow is proportional to the speed magnitude, the square of the speed magnitude, or the square root of the speed magnitude, and is specifically selected according to the actual situation, which is not specifically limited in the embodiment of the present invention.
  • different degrees of colors of the arrows are used to represent the speed vector, that is, 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.
  • the ultrasound vector blood flow imaging device determines the target area of the target scanning object in the ultrasound 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 target position. Velocity vector at the end, and the velocity vector is finally displayed at the target position in the ultrasound blood flow image. Since the ultrasound vector blood flow imaging process is realized by processing at least two sets of velocity components, there is no need to rely on a high-end ultrasound platform to perform the receiving beam. Complex processing, thereby reducing the complexity of the ultrasound vector blood flow imaging process.
  • 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.
  • the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100. As shown in FIG. 10, the method may include:
  • the ultrasound vector blood flow imaging device alternately transmits at least two ultrasound waves to a target scanning object at least two emission angles according to a preset time.
  • An ultrasound vector blood flow imaging method provided by an embodiment of the present invention is applicable to a scenario in which ultrasound vector blood flow imaging is performed based on at least two emission angles and interpolation calculations.
  • 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 by adjusting the size and position of the transmission aperture of the ultrasound probe 100 Multiple firing angles.
  • one of the at least two transmission angles is determined as a different transmission angle.
  • the left edge position and the right edge position of the probe correspond to two emission angles respectively.
  • the emission angles are vertical and leftward; for the right edge position, the emission angles are vertical and offset. right.
  • a wider blood flow imaging area can be obtained by transmitting two different emission angles to two edge positions of the ultrasound probe 100.
  • the target scanning object is a vascular tissue, which is specifically selected according to actual conditions, and the embodiment of the present invention is not specifically limited.
  • the transmitting circuit 101 of the ultrasound vector blood flow imaging device 10 adopts an ultrasonic transmission mode, and alternately transmits at least two ultrasonic waves to the target scanning object at least two transmission angles according to a preset time.
  • the ultrasonic wave includes a conventional focused wave, a plane wave, or a divergent wave, and is specifically selected according to an actual situation, and the embodiment of the present invention does not specifically limit it.
  • the position of the target scanning object is determined according to the intensity of the transmitted sound field, so that when the transmitting circuit 101 of the ultrasound vector blood flow imaging device 10 scans in the scanning area, the position of the target scanning position in the scanning area is Multi-angle focused wave superimposed area.
  • FIG. 2 there are two emission angles, which are a vertical angle emitted from the emission aperture 1 and a leftward angle emitted from the emission aperture 2 respectively.
  • Two focused waves of different angles are formed respectively, and the target is scanned.
  • the position of the object is the overlapping scanning area of the focused waves at two angles represented by the dashed diagonal line.
  • the ultrasound vector blood flow imaging device receives echo signals in response to at least two receiving angles of the ultrasound.
  • the transmitting circuit 101 of the ultrasound vector blood flow imaging device 10 alternately transmits at least two ultrasound waves to the target scanning object at least two emission angles at a preset time
  • the receiving circuit 103 of the ultrasound vector blood flow imaging device 10 will receive Echo signals in response to at least two reception angles of the ultrasound.
  • the receiving circuit 103 of the ultrasound vector blood flow imaging device 10 uses the receiving circuit to receive the ultrasound echo signal in response to the ultrasound, and the processor 105 of the ultrasound vector blood flow imaging device 10 performs beam synthesis on the ultrasound echo signal. Multi-angle beam synthesis data is obtained, and then multi-angle beam synthesis data wall filtering is performed to obtain an echo signal.
  • the ultrasound vector blood flow imaging device generates an ultrasound blood flow image according to the echo signal.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 After the receiving circuit 103 of the ultrasound vector blood flow imaging device 10 receives echo signals corresponding to at least two receiving angles of the ultrasound, the processor 105 of the ultrasound vector blood flow imaging device 10 generates an ultrasound blood flow image according to the echo signals. Already.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 processes the echo signal to obtain a Doppler color blood flow map.
  • the transmitting circuit 101 of the ultrasound vector blood flow imaging device 10 uses another set of transmission conditions for transmission, and sequentially performs beam synthesis and grayscale image processing on the echo data received by the receiving circuit 103 to obtain a two-dimensional grayscale image. .
  • the transmission condition refers to a transmission waveform, a center frequency of a transmission signal, a length (number of cycles) of the transmission signal, and the like.
  • the ultrasound blood flow image includes a two-dimensional grayscale image, a Doppler color blood flow image, or an image displayed together with the two-dimensional grayscale image and the Doppler color blood flow image, and is specifically selected according to actual conditions
  • the embodiments of the present invention are not specifically limited.
  • the ultrasound vector blood flow imaging device determines a target area of the target scanning object in the ultrasound blood flow image according to the overlapping area of the echo signals.
  • the ultrasound vector blood flow imaging device 10 determines that the target scan object is in the ultrasound blood flow image according to the overlapping area of the echo signal. The target area.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 determines the position of the target scanning object according to the intensity of the emitted sound field, so that when the ultrasound vector blood flow imaging device 10 scans in the scanning area, the target in the scanning area
  • the target area where the scanning object is located is the superimposed area of multi-angle focused waves.
  • the ultrasound vector blood flow imaging device obtains at least two sets of velocity components corresponding to the target area, where each set of velocity components includes at least one velocity component.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the target area of the target scanned object in the ultrasound blood flow image according to the overlapping area of the echo signal, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 acquires the target The zone corresponds to at least two sets of velocity components.
  • the processor 105 of the ultrasound vector blood flow imaging device 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, where each set of velocity components includes at least two A velocity component.
  • the calculation formula for Doppler ultrasound blood flow is:
  • c is the ultrasonic propagation speed
  • f 0 is the center frequency of the transmitted signal of the probe
  • f PRF is the repetition frequency of the transmitted pulse. Is the real part operator, Is the operator of the imaginary part.
  • N is the number of shots at the same position of the target scanning object
  • j is an imaginary unit.
  • the calculated v is the velocity component of the actual velocity of the target scanning object along multiple emission angles.
  • Doppler ultrasound blood flow calculation is used to calculate the velocity component corresponding to each calculation point at each emission angle, and then each velocity component at each emission angle is obtained, and at least two velocity groups are finally obtained. Weight.
  • the ultrasound vector blood flow imaging device performs interpolation calculation on 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 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 area, the processor 105 of the ultrasound vector blood flow imaging apparatus 10 needs to perform interpolation calculation on at least two sets of velocity components to determine the target position. There are at least two velocity components.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines a first speed component corresponding to a target position from a first group of speed components, where the first group of speed components is at least two groups of speeds Any one of the velocity components in the component, the first velocity component is one of the velocity components in the first group; interpolation calculation is performed on the second group of velocity components to determine the corresponding second velocity component at the target position, where the second The set of speed components is at least two other speed components different from the first set of speed components in at least two sets of speed components; the first speed component and the second speed component are determined as at least two speed components.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 determines a first pixel point from all the pixel points corresponding to the first group of velocity components, and determines the velocity component corresponding to the first pixel point as the corresponding first pixel at the target position.
  • a velocity component where the first pixel is any one of all pixels corresponding to the first set of velocity components; after that, the processor 105 of the ultrasound vector blood flow imaging device 10 acquires at least two adjacent to the target position Second pixel points, wherein at least two second pixel points are at least two pixel points of all the pixel points corresponding to the second set of velocity components; and performing at least two velocity components corresponding to the at least two second pixel points Interpolation calculation to obtain the second velocity component.
  • the interpolation calculation method includes a 4-point interpolation calculation method or an 8-point interpolation calculation method.
  • the specific interpolation number is selected according to actual conditions, and the embodiment of the present invention does not specifically limit it.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 performs interpolation calculation on the first group of velocity components to determine a corresponding first velocity component at the target position, where the first group of velocity components is at least two Any one of the group of velocity components; the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on the second group of velocity components to determine a corresponding second velocity component at the target position, where the second group of velocity components is The at least two sets of velocity components are different from the other at least one set of velocity components in the first set of velocity components; the processor 105 of the ultrasound vector blood flow imaging apparatus 10 determines the first velocity component and the second velocity component as at least two velocity components .
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 obtains at least two first pixel points adjacent to each other at a target position from all corresponding pixel points in the first set of velocity components, where at least two first pixels Point is at least two pixels out of all pixels corresponding to the first set of velocity components; interpolation calculation is performed on at least two velocity components corresponding to at least two first pixel points to obtain a first velocity component; ultrasound vector blood flow imaging The processor 105 of the device 10 obtains at least two second pixel points adjacent to each other at the target position from all corresponding pixel points in the second group of speed components, where at least two second pixel points correspond to the first group of speed components. At least two pixel points among all the pixel points of the pixel; perform interpolation calculation on at least two velocity components corresponding to the at least two second pixel points to obtain a second velocity component.
  • the ultrasound vector blood flow imaging device synthesizes at least two velocity components to determine a velocity vector at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 After the processor 105 of the ultrasound vector blood flow imaging device 10 performs interpolation calculation on 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 device 10 needs to perform at least two The velocity components are combined to determine the velocity vector at the target position.
  • the processor 105 of the ultrasound vector blood flow imaging apparatus 10 combines the first velocity component and the second velocity component to obtain a velocity vector at a target position.
  • FIG. 6 shows two velocity components corresponding to two different launch angles at the target position, and the two velocity components are angularly synthesized, and the synthesized velocity vector is the velocity vector of the target position.
  • the ultrasound vector blood flow imaging device transmits two focused waves under the transmission angle 1 and the transmission angle 2, and at this time, the echo signal corresponding to the transmission angle 1 and the echo signal corresponding to the transmission angle 2
  • the overlapping area between them is the target area, and the calculation point corresponding to the transmission angle 1 is used as the target position.
  • the calculation point A1 of the transmission angle 1 in the overlap area is determined, and the four calculation points corresponding to the transmission angle 2 adjacent to A1 are found. Perform a 4-point interpolation calculation on these 4 calculation points to obtain the velocity component corresponding to the transmission angle 2 at A1, and synthesize the velocity component corresponding to the transmission angle 2 and the velocity component corresponding to the transmission angle 1 to obtain a velocity vector at the A1 position.
  • the ultrasound vector blood flow imaging device determines the display form of the arrow according to the velocity vector.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 After the processor 105 of the ultrasound vector blood flow imaging device 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 device 10 determines the display of the arrow according to the velocity vector. Form it.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 uses the form of an arrow to represent the velocity vector in the ultrasound blood flow image.
  • the display form of the arrow includes at least one of the size, length, thickness, direction, and color of the arrow, which is selected according to actual conditions, and is not specifically limited in the embodiment of the present invention.
  • the velocity vector includes a velocity magnitude and a velocity direction, where the arrow direction is the blood flow velocity direction of the target position, and the processor 105 of the ultrasound vector blood flow imaging device 10 determines the size of the arrow or the arrow ’s At least one of the colors.
  • the size of the arrow includes at least one of the length, size, and thickness of the arrow, and is specifically selected according to the actual situation, which is not specifically limited in the embodiment of the present invention.
  • the length of the arrow is proportional to the speed magnitude, the square of the speed magnitude, or the square root of the speed magnitude, and is specifically selected according to the actual situation, which is not specifically limited in the embodiment of the present invention.
  • the speed direction of arrow 1 and arrow 2 are the same.
  • the speed of arrow 1 is 50 cm / s and the speed of arrow 2 is 20 cm / s. Therefore, the size of arrow 1 is larger than that of arrow 2 size.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 uses different degrees of color of the arrows to represent the speed vector, that is, 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.
  • the head colors of the arrows 1 and 2 are dark, and the directions of the arrows 1 and 2 are the same.
  • the colors of the tails of the arrows 2 and 3 are dark, indicating the arrows 2 Same speed as Arrow 3.
  • the ultrasound vector blood flow imaging device displays an arrow at a target position according to a display form to display a velocity vector at a target position in the ultrasound blood flow image.
  • 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, so that the ultrasound blood flow The velocity vector is displayed at the target position in the image.
  • the transmission circuit 101 of the ultrasound vector blood flow imaging device 10 uses two sets of transmission conditions to transmit in turn, and obtains a two-dimensional grayscale image and a Doppler color blood flow chart, respectively.
  • the transmission condition refers to the transmission waveform. The center frequency of the transmitted signal, the length (number of cycles) of the transmitted signal, and so on.
  • the ultrasound imaging blood flow imaging device obtains a Doppler color blood flow map after performing Doppler ultrasound blood flow calculation on the echo signal.
  • the ultrasound blood flow image includes a two-dimensional grayscale image, a Doppler color blood flow image, or a two-dimensional grayscale image and a Doppler color blood flow image to be displayed together, and is specifically selected according to actual conditions.
  • the embodiments of the invention are not specifically limited.
  • the two-dimensional grayscale image and the Doppler color blood flow diagram constitute a traditional color ultrasound display mode, that is, the B picture and the color blood flow are displayed together.
  • a two-dimensional grayscale image, a Doppler color blood flow map, and a speed vector constitute a new blood flow display mode, that is, while displaying a traditional color ultrasound, a speed vector is displayed on the color ultrasound.
  • the two-dimensional grayscale image and the velocity vector constitute another different display method, so that the two-dimensional structure of the B-picture can be seen more clearly, and the blood flow velocity vector can also be seen.
  • the user can freely mark the position of the velocity vector to be displayed in the ultrasound vector blood flow chart.
  • FIG. 11 is an ultrasound vector blood flow imaging device.
  • the transmitting / receiving selection switch is used to control the process of ultrasound transmission or ultrasound reception of the probe.
  • the ultrasound vector blood flow imaging device uses a transmitting circuit to stimulate the probe to emit multi-angle focus to the scanning object. After that, the ultrasound vector blood flow imaging device uses a receiving circuit to excite the probe to receive a multi-angle received signal that responds to a multi-angle focused wave, and uses a beam synthesis module to beam-synthesize the multi-angle received signal to obtain multi-angle beam synthesis data, using wall filtering.
  • the module processes the multi-angle beam synthesis data into multi-angle echo signals.
  • the gray-scale image processing module can also use the gray-scale image processing module to process the multi-angle beam synthesis data into two-dimensional gray-scale images, and then use the Doppler blood flow measurement module to Doppler blood flow calculation is performed on multi-angle echo signals, and multiple sets of velocity components corresponding to the Doppler color blood flow map and multi-angle echo signals are obtained. Finally, multiple sets of velocity components are subjected to velocity by the blood flow velocity vector synthesis module. Vector synthesis to get the actual speed direction of the target scan object the amount.
  • the ultrasound vector blood flow imaging device 10 determines a target area of the target scanning object in the ultrasound blood flow image, 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 target.
  • the velocity vector at the position, and finally the velocity vector is displayed at the target position in the ultrasound blood flow image. Since the ultrasound vector blood flow imaging process is realized by processing at least two sets of velocity components, there is no need to rely on a high-end ultrasound platform for receiving.
  • the beam undergoes complex processing, which reduces the complexity of the ultrasound vector blood flow imaging process.
  • 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.
  • the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100. As shown in FIG. 12, the method may include:
  • the ultrasound vector blood flow imaging device alternately transmits at least two ultrasound waves to a target scanning object at least two emission angles according to a preset time.
  • An ultrasound vector blood flow imaging method provided by an embodiment of the present invention is applicable to a scenario where ultrasound vector blood flow imaging is performed based on at least two emission angles and beam synthesis calculations.
  • the ultrasound vector blood flow imaging device receives echo signals in response to at least two receiving angles of the ultrasound.
  • the ultrasound vector blood flow imaging device generates an ultrasound blood flow image according to the echo signal.
  • the ultrasound vector blood flow imaging device determines a target area of the target scanning object in the ultrasound blood flow image according to the overlapping area of the echo signals.
  • the ultrasound vector blood flow imaging device obtains at least two sets of velocity components corresponding to the target area, where each set of velocity components includes at least one velocity component.
  • the ultrasound vector blood flow imaging device selects at least two velocity components at a target position from at least two velocity components.
  • the beam synthesis method is directed to the velocity components at different angles at the same position obtained by the same pixel point, and the processor 105 of the ultrasound vector blood flow imaging device 10 determines the first A speed component and a second speed component; determining the first speed component and the second speed component as at least two speed components.
  • the processor 105 of the ultrasound vector blood flow imaging device 10 selects the speed component corresponding to the first pixel point from the first set of speed components, and determines the speed component corresponding to the first pixel point as the first corresponding point at the target position.
  • a velocity component where the first pixel is any one of all pixels corresponding to the first group of velocity components; the processor 105 of the ultrasound vector blood flow imaging device 10 selects the second pixel from the second group of velocity components.
  • the corresponding speed component, and the speed component corresponding to the second pixel point is determined as the corresponding second speed component at the target position, where the second pixel point is any one of all the pixel points corresponding to the second set of speed components ,
  • the positions of the first pixel point and the second pixel point are coincident.
  • the ultrasound vector blood flow imaging device synthesizes at least two velocity components to determine a velocity vector at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the ultrasound vector blood flow imaging device determines the display form of the arrow according to the velocity vector.
  • the ultrasound 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 ultrasound 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.
  • the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100. As shown in FIG. 13, the method may include:
  • An ultrasound vector blood flow imaging device transmits an ultrasonic wave to a target scanning object at least twice at an emission angle.
  • the ultrasound vector blood flow imaging method provided by the embodiment of the present invention is applicable to a scene in which the ultrasound vector blood flow imaging device 10 performs ultrasound vector blood flow imaging based on an emission angle and an interpolation algorithm.
  • the processor 105 of the ultrasonic vector blood flow imaging device 10 adjusts the transmission angle by adjusting the size and position of the transmission aperture of the ultrasonic probe 100, and then the transmission circuit 101 of the ultrasonic vector blood flow imaging device 10 is at a transmission angle. Perform at least two ultrasound scans on the target scan object.
  • the target scanning object is a vascular tissue, which is specifically selected according to actual conditions, and the embodiment of the present invention does not specifically limit it.
  • the ultrasound vector blood flow imaging device receives echo signals in response to at least two receiving angles of the ultrasound.
  • the ultrasound vector blood flow imaging device generates an ultrasound blood flow image according to an echo signal.
  • the ultrasound vector blood flow imaging device determines a target area of the target scanning object in the ultrasound blood flow image according to the overlapping area of the echo signals.
  • the ultrasound vector blood flow imaging device acquires at least two sets of velocity components corresponding to the target area, where each set of velocity components includes at least one velocity component.
  • the ultrasound vector blood flow imaging device performs interpolation calculation on at least two sets of velocity components to determine at least two velocity components at the target position.
  • the ultrasound vector blood flow imaging device synthesizes at least two velocity components to determine a velocity vector at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the ultrasound vector blood flow imaging device determines a display form of the arrow according to the velocity vector.
  • the ultrasound 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 ultrasound 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.
  • the ultrasound vector blood flow imaging device 10 includes an ultrasound probe 100. As shown in FIG. 14, the method may include:
  • the ultrasound vector blood flow imaging device transmits at least two ultrasound waves to a target scanning object at an emission angle.
  • the ultrasound vector blood flow imaging method provided by the embodiment of the present invention is applicable to a scene in which the ultrasound vector blood flow imaging device 10 performs ultrasound vector blood flow imaging based on an emission angle and a beam synthesis algorithm.
  • the ultrasound vector blood flow imaging device receives echo signals in response to at least two receiving angles of the ultrasound.
  • the ultrasound vector blood flow imaging device generates an ultrasound blood flow image according to the echo signal.
  • the ultrasound vector blood flow imaging device determines a target area of the target scanning object in the ultrasound blood flow image according to the overlapping area of the echo signals.
  • the ultrasound vector blood flow imaging device acquires at least two sets of velocity components corresponding to the target area, where each set of velocity components includes at least one velocity component.
  • the ultrasound vector blood flow imaging device selects at least two velocity components at the target position from at least two velocity components.
  • the ultrasound vector blood flow imaging device synthesizes at least two velocity components to determine a velocity vector at a target position, where the target position is a position of a pixel to be displayed in the target area.
  • the ultrasound vector blood flow imaging device determines the display form of the arrow according to the velocity vector.
  • the ultrasound 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 ultrasound blood flow image.
  • the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better.
  • Implementation Based on such an understanding, the technical solution of the present invention, in essence, or a part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, The optical disc) includes several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present invention.
  • a terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.
  • the ultrasound vector blood flow imaging device determines a target area of the target scanning object in the ultrasound blood flow image, 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 the velocity vector is displayed at the target position in the ultrasound blood flow image. Because at least two sets of velocity components are processed to realize the ultrasound vector blood flow imaging process, there is no need to rely on high-end ultrasound platforms. The receiving beam undergoes complex processing, thereby reducing the complexity of the ultrasound vector blood flow imaging process.

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Abstract

一种超声向量血流成像方法及装置、存储介质,该方法包括:确定目标扫描对象在超声血流图像中的目标区域(S101);获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量(S102);对至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,目标位置为目标区域内的待显示像素点位置(S103);对至少两个速度分量进行合成,确定目标位置处的速度向量(S104);将速度向量显示在超声血流图像中的目标位置处(S105)。

Description

一种超声向量血流成像方法及装置、存储介质 技术领域
本发明涉及超声成像领域,尤其涉及一种超声向量血流成像方法及装置、存储介质。
背景技术
超声向量血流成像技术相较于传统的彩超而言,可以在不需要角度矫正的情况下,计算出血流速度的大小和方向,并且不受角度依赖,因此能够作为诊断血管疾病的重要依据。然而,超声向量血流成像技术通常需要依赖高端的超声平台才能实现高质量的向量血流成像,成像过程复杂。
发明内容
为解决上述技术问题,本发明实施例期望提供一种超声向量血流成像方法及装置、存储介质,能够降低超声向量血流成像过程的复杂程度。
本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置,所述方法包括:
第一方面,本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置,所述方法包括:
确定目标扫描对象在超声血流图像中的目标区域;
获取所述目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量;
对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,所述目标位置为所述目标区域内的待显示像素点位置;
对所述至少两个速度分量进行合成,确定所述目标位置处的速度向量;
将所述速度向量显示在所述超声血流图像中的所述目标位置处。
在上述方法中,所述对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,包括:
对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量。
在上述方法中,所述对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,包括:
从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量。
在上述方法中,所述对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量,包括:
从第一组速度分量中确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量,所述第一速度分量是第一组速度分量中的其中一个速度分量;
对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;
将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
在上述方法中,所述从第一组速度分量中确定所述目标位置处对应的第一速度分量,包括:
从所述第一组速度分量对应的全部像素点中确定第一像素点,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;
相应的,所述对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,包括:
获取与所述目标位置处相邻的至少两个第二像素点,其中,所述至少 两个第二像素点是所述第二组速度分量对应的全部像素点中的至少两个像素点;
对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
在上述方法中,所述对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量,包括:
对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量;
对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;
将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
在上述方法中,所述对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,包括:
从所述第一组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第一像素点,其中,所述至少两个第一像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;
对所述至少两个第一像素点对应的至少两个速度分量进行插值计算,得到所述第一速度分量;
相应的,所述对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,包括:
从所述第二组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;
对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
在上述方法中,所述从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量,包括:
从第一组速度分量中选取第一像素点对应的速度分量,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;
从第二组速度分量中选取第二像素点对应的速度分量,并将所述第二像素点对应的速度分量确定为所述目标位置处对应的第二速度分量,其中,所述第二像素点是所述第二组速度分量对应的全部像素点中的任意一个像素点,所述第一像素点和所述第二像素点的位置重合。
在上述方法中,所述将所述速度向量显示在所述超声血流图像中的所述目标位置处,包括:
根据所述速度向量确定箭头的显示形式;
根据所述显示形式在所述目标位置处显示所述箭头,以在所述目标位置处显示所述速度向量。
在上述方法中,所述速度向量包括速度大小和速度方向,所述根据所述速度向量确定箭头的显示形式,包括:
将所述速度方向确定为所述箭头的方向;
根据所述速度大小确定所述箭头的尺寸和所述箭头的颜色中的至少一个。
在上述方法中,所述确定目标扫描对象在超声血流图像中的目标区域之前,所述方法还包括:
在至少两个发射角度分别对所述目标扫描对象发射至少两次超声波;
接收响应于所述超声波的至少两个接收角度的回波信号;
根据所述回波信号生成所述超声血流图像。
在上述方法中,所述确定目标扫描对象在超声血流图像中的目标区域之前,所述方法还包括:
在一个发射角度对所述目标扫描对象发射至少两次超声波;
接收响应于所述超声波的至少两个接收角度的回波信号;
根据所述回波信号生成所述超声血流图像。
在上述方法中,所述在至少两个发射角度对所述目标扫描对象分别发射至少两次超声波,包括:
在所述至少两个发射角度按照预设时间交替地对所述目标扫描对象分别发射至少两次超声波。
在上述方法中,所述获取所述目标区域对应的至少两组速度分量,包括:
对所述目标区域对应的所述回波信号进行多普勒超声血流计算,得到所述至少两组速度分量。
在上述方法中,所述确定目标扫描对象在超声血流图像中的目标区域,包括:
根据所述回波信号的重叠区域确定为所述目标区域。
第二方面,本发明实施例提供一种超声向量血流成像装置,所述超声向量血流成像装置包括:
探头;
发射电路,所述发射电路激励所述探头向目标扫描对象发射超声波;
接收电路,所述接收电路通过所述探头接收从所述目标扫描对象返回的超声回波以获得回波信号;
处理器,所述处理器处理所述回波信号以获得所述目标扫描对象的超声血流图像;
显示器,所述显示器显示所述超声血流图像;
其中,所述处理器具体执行如下步骤:确定目标扫描对象在超声血流图像中的目标区域;获取所述目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量;对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,所述目标位置为所述目标区域内的待显示像素点位置;对所述至少两个速度分量进行合成,确定所述目标位置处的速度向量;将所述速度向量显示在所述超声血流图像中的所述目标位置处。
在上述超声向量血流成像装置中,所述处理器,还用于对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于从第一组速度分量中确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量,所述第一速度分量是第一组速度分量中的其中一个速度分量;对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于从所述第一组速度分量对应的全部像素点中确定第一像素点,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;获取与所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第二组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到 所述第二速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量;对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于从所述第一组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第一像素点,其中,所述至少两个第一像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第一像素点对应的至少两个速度分量进行插值计算,得到所述第一速度分量;从所述第二组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于从第一组速度分量中选取第一像素点对应的速度分量,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;从第二组速度分量中选取第二像素点对应的速度分量,并将所述第二像素点对应的速度分量确定为所述目标位置处对应的第二速度分量,其中,所述第二像素点是所述第二组速度分量对应的全部像素点中的任意一个像素点,所述第一像素点和所述第二像素点的位置重合。
在上述超声向量血流成像装置中,所述处理器,还用于根据所述速度 向量确定箭头的显示形式;
所述显示器,还用于根据所述显示形式在所述目标位置处显示所述箭头,以在所述目标位置处显示所述速度向量。
在上述超声向量血流成像装置中,所述速度向量包括速度大小和速度方向,
所述处理器,还用于将所述速度方向确定为所述箭头的方向;根据所述速度大小确定所述箭头的尺寸和所述箭头的颜色中的至少一个。
在上述超声向量血流成像装置中,所述发射电路,具体用于在至少两个发射角度分别对所述目标扫描对象发射至少两次超声波;
所述接收电路,具体用于接收响应于所述超声波的至少两个接收角度的回波信号;
所述处理器,还用于根据所述回波信号生成所述超声血流图像。
在上述超声向量血流成像装置中,所述发射电路,还用于在一个发射角度对所述目标扫描对象发射至少两次超声波;
所述接收电路,还用于接收响应于所述超声波的至少两个接收角度的回波信号;
所述处理器,还用于根据所述回波信号生成所述超声血流图像。
在上述超声向量血流成像装置中,所述发射电路,还用于在所述至少两个发射角度按照预设时间交替地对所述目标扫描对象分别发射至少两次超声波。
在上述超声向量血流成像装置中,所述处理器,还用于对所述目标区域对应的所述回波信号进行多普勒超声血流计算,得到所述至少两组速度分量。
在上述超声向量血流成像装置中,所述处理器,还用于根据所述回波信号的重叠区域确定为所述目标区域。
第三方面,本发明实施例提供一种存储介质,其上存储有计算机程 序,应用于超声向量血流成像装置,该计算机程序被处理器执行时实现如上述第一方面所述的方法。
本发明实施例提供一种超声向量血流成像方法及装置、存储介质,该方法包括:确定目标扫描对象在超声血流图像中的目标区域;获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量;对至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,目标位置为目标区域内的待显示像素点位置;对至少两个速度分量进行合成,确定目标位置处的速度向量;将速度向量显示在超声血流图像中的目标位置处。采用上述方案,超声向量血流成像装置确定目标扫描对象在超声血流图像中的目标区域,并获取目标区域对应的至少两组速度分量,之后对至少两组速度分量进行处理,得到目标位置处的速度向量,最后将速度向量显示在超声血流图像中的目标位置处,由于是通过对至少两组速度分量进行处理实现超声向量血流成像过程,无需依赖高端的超声平台对接收波束进行复杂的处理,从而降低了超声向量血流成像过程的复杂程度。
附图说明
图1为本发明实施例提供的一种超声向量血流成像装置的示意图;
图2为本发明实施例提供的一种超声向量血流成像方法的流程图一;
图3为本发明实施例提供的一种示例性的不同发射孔径发射聚焦波的发射示意图;
图4为本发明实施例提供的一种示例性的对于同一区域交替发射两个不同发射角度的发射示意图;
图5为本发明实施例提供的一种示例性的探头边缘位置采用不同发射角度的发射示意图;
图6为本发明实施例提供的一种示例性的速度角度合成的示意图;
图7为本发明实施例提供的一种示例性的通过插值计算速度向量的示意图;
图8为本发明实施例提供的一种示例性的通过箭头颜色表征速度向量的示意图;
图9为本发明实施例提供的一种示例性的通过箭头粗细表征速度向量的示意图;
图10为本发明实施例提供的一种超声向量血流成像方法的流程图二;
图11为本发明实施例提供的一种示例性的超声向量血流成像装置的示意图;
图12为本发明实施例提供的一种超声向量血流成像方法的流程图三;
图13为本发明实施例提供的一种超声向量血流成像方法的流程图四;
图14为本发明实施例提供的一种超声向量血流成像方法的流程图五。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
本发明实施例提供一种超声向量血流成像方法,该方法应用于超声向量血流成像装置10,如图1所示,该超声向量血流成像装置10可以包括超声探头100、发射电路101、发射/接收选择开关102、接收电路103、波束合成电路104、处理器105和显示器106。发射电路101可以激励超声探头100向目标扫描对象发射超声波。接收电路103可以通过超声探头100接收从目标扫描对象返回的超声回波,从而获得回波信号/数据。该回波信号/数据经过波束合成电路104进行波束合成处理后,送入处理器105。处理器105对该回波信号/数据进行处理,以获取目标扫描对象的组织相关参数和超声血流图像。处理器105获得的超声血流图像可以存储于存储器107中。 这些超声血流图像可以在显示器106上显示。
本申请实施例中,前述的超声向量血流成像装置10的显示器106可为触摸显示屏、液晶显示屏等,也可以是独立于超声向量血流成像装置10之外的液晶显示器、电视机等独立显示设备,也可为手机、平板电脑等电子设备上的显示屏。
本申请实施例中,前述的超声向量血流成像装置10的存储器107可为闪存卡、固态存储器、硬盘等。
本申请实施例还提供一种计算机可读存储介质,该计算机可读存储介质存储有多条程序指令,该多条程序指令被处理器105调用执行后,可执行本申请各个实施例中的超声向量血流成像中的部分步骤或全部步骤或其中步骤的任意组合。
一个实施例中,该计算机可读存储介质可为存储器107,其可以是闪存卡、固态存储器、硬盘等非易失性存储介质。
本申请实施例中,前述的超声向量血流成像装置10的处理器105可以通过软件、硬件、固件或者其组合实现,可以使用电路、单个或多个专用集成电路(application specific integrated circuits,ASIC)、单个或多个通用集成电路、单个或多个微处理器、单个或多个可编程逻辑器件、或者前述电路或器件的组合、或者其他适合的电路或器件,从而使得该处理器105可以执行前述各个实施例中的超声向量血流成像方法的相应步骤。
下面对本申请中的超声向量血流成像方法进行详细描述,请参阅图2。
S101、确定目标扫描对象在超声血流图像中的目标区域。
本发明实施例提供的一种超声向量血流成像方法适用于基于超声波发射方式进行超声向量血流成像的场景下。
本发明实施例中,超声波包括聚焦波、平面波或者发散波等,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
本发明实施例中,超声向量血流成像装置10上设置有超声探头100, 超声向量血流成像装置10通过调整超声探头100的发射孔径的大小和位置,确定一个发射角度或者至少两个发射角度;超声向量血流成像装置10中的发射电路101在一个发射角度对目标扫描对象发射至少两次超声波,之后接收电路103接收响应于超声波的至少两个接收角度的回波信号,超声向量血流成像装置10中的处理器105根据回波信号确定超声血流图像。
本发明实施例中,超声向量血流成像装置10上设置有超声探头100,超声向量血流成像装置10通过调整超声探头100的发射孔径的大小和位置,确定至少两个发射角度;超声向量血流成像装置10中的发射电路101在至少两个发射角度,可以按照预设时间交替地对目标扫描对象分别发射至少两次超声波,之后接收电路103接收响应于超声波的至少两个接收角度的回波信号,超声向量血流成像装置10中的处理器105根据回波信号确定超声血流图像。
本发明实施例中,超声向量血流成像装置10的处理器105可以对接收到的超声回波信号进行波束合成和壁滤波,得到目标区域对应的回波信号。
本发明实施例中,处理器105根据发射声场的强度确定目标扫描对象的扫描位置,以使超声向量血流成像装置10在确定的扫描位置进行扫描时,目标扫描对象所处的目标区域为响应于超声波的至少两个接收角度的回波信号的重叠区域。
示例性的,如图3所示,有两个发射角度,分别为从发射孔径1发出的垂直角度和从发射孔径2发出的偏左角度,分别形成两个不同角度的聚焦波,则目标扫描对象在超声血流图像中的目标区域为虚斜线代表的两个角度的聚焦波重叠扫描区域。
本发明实施例中,目标扫描对象为血管组织,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
示例性的,如图4所示,有1和2两个发射角度,发射次数为5次,则超声向量血流成像装置按照1212121212的形式进行发射。
本发明实施例中,对于超声探头100的两个边缘位置,至少两个发射角度中的一个发射角度是不相同的。
示例性的,如图5所示,探头的左边缘位置和右边缘位置的发射孔径2对应的发射角度不同,对于左边缘位置,发射角度为垂直和偏左;对于右边缘位置,发射角度为垂直和偏右。
可以理解的是,对超声探头100的两个边缘位置发射两组不同的发射角度能够得到更宽的血流成像区域。
S102、获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
当超声向量血流成像装置10的处理器105确定出目标扫描对象在超声血流图像中的目标区域之后,超声向量血流成像装置10的处理器105就要获取目标区域对应的至少两组速度分量了。
本发明实施例中,超声向量血流成像装置10中的处理器105对回波信号进行多普勒超声血流计算,得到回波信号对应的至少两组速度分量。
本发明实施例中,多普勒超声血流计算公式为:
Figure PCTCN2018102789-appb-000001
其中,c为超声传播速度,f 0为探头发射信号的中心频率,f PRF为发射脉冲重复频率,
Figure PCTCN2018102789-appb-000002
是取实部算子,
Figure PCTCN2018102789-appb-000003
是取虚部算子。
Figure PCTCN2018102789-appb-000004
其中,N为在目标扫描对象的同一个位置的发射次数,j为虚数单位。计算得到的v是目标扫描对象的实际速度沿多个发射角度的速度分量。
本发明实施例中,采用多普勒超声血流计算,计算出每个发射角度下每个计算点对应的速度分量,进而得到每个发射角度下的每组速度分量,最后将每组速度分量组成至少两组组速度分量。
S103、对至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,目标位置为目标区域内的待显示像素点位置。
当超声向量血流成像装置10的处理器105获取到目标区域对应的至少两组速度分量之后,超声向量血流成像装置10的处理器105就要对至少两组速度分量进行处理,来确定目标区域内的待显示像素点位置处的至少两个速度分量了。
本发明实施例中,假设该至少两组速度分量中对应的像素点的位置没有完全重合,则超声向量血流成像装置10的处理器105对至少两组速度分量进行插值计算,确定目标位置处的至少两个速度分量,假设该至少两组速度分量中对应的每个像素点的位置完全重合,则无需进行插值计算,直接获取每个像素点对应的至少两个速度分量,并对每个像素点的至少两个速度分量进行合成,确定每个像素点最终的速度向量。
本发明实施例中,超声向量血流成像装置10的处理器105根据像素点的波束合成方式从至少两组速度分量中确定目标位置处的至少两个速度分量。
需要说明的是,具体的确定至少两个速度分量的计算方法根据实际情况进行选择,本发明实施例不做具体的限定。
在一种可能的实现方式中,超声向量血流成像装置10的处理器105采用插值计算方法,确定目标位置处的至少两个速度分量的其中一种过程为:超声向量血流成像装置10的处理器105从第一组速度分量中确定目标位置处对应的第一速度分量,其中,第一组速度分量是至少两组速度分量中的任意一组速度分量,第一速度分量是第一组速度分量中的其中一个速度分量;对第二组速度分量进行插值计算确定目标位置处对应的第二速度分量,其中,第二组速度分量是至少两组速度分量中不同于第一组速度分量中的其他至少一组速度分量;将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量对应的全部像素点中确定第一像素点,并将第一像素点对应的速度分量确定为目标位置处对应的第一速度分量,其中,第一像素点是第一组速度分量对应的全部像素点中的任意一个像素点;之后,超声向量血流成像装置10的处理器105获取与目标位置相邻的至少两个第二像素点,其中,至少两个第二像素点是第二组速度分量对应的全部像素点中的至少两个像素点;对至少两个第二像素点对应的至少两个速度分量进行插值计算,得到第二速度分量。
其中,插值计算方法包括4点插值计算方法或者8点插值计算方法,具体的插值个数由多个第二角度计算点的个数确定,本发明实施例不做具体的限定。
在一种可能的实现方式中,超声向量血流成像装置10的处理器105采用插值计算方法,确定目标位置处的至少两个速度分量的另一种过程为:超声向量血流成像装置10的处理器105对第一组速度分量进行插值计算确定目标位置处对应的第一速度分量,其中,第一组速度分量是至少两组速度分量中的任意一组速度分量;超声向量血流成像装置10的处理器105对第二组速度分量进行插值计算确定目标位置处对应的第二速度分量,其中,第二组速度分量是至少两组速度分量中不同于第一组速度分量中的其他至少一组速度分量;超声向量血流成像装置10的处理器105将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量中对应的全部像素点中获取目标位置处相邻的至少两个第一像素点,其中,至少两个第一像素点是第一组速度分量对应的全部像素点中的至少两个像素点;对至少两个第一像素点对应的至少两个速度分量进行插值计算,得到第一速度分量;超声向量血流成像装置10的处理器105从第二组速度分量中对应的全部像素点中获取目标位置处相邻的至少两个第 二像素点,其中,至少两个第二像素点是第一组速度分量对应的全部像素点中的至少两个像素点;对至少两个第二像素点对应的至少两个速度分量进行插值计算,得到第二速度分量。
在一种可能的实现方式中,超声向量血流成像装置10的处理器105无需通过插值计算,就可以确定目标位置处的至少两个速度分量。即该至少两组速度分量中对应的像素点的位置是完全重合的。这样,在同一个像素点上可以得到至少两个速度分量,并对该至少两个速度分量做合成,以确定该像素点最终的速度向量。其中,确定目标位置处的至少两个速度分量的过程为:超声向量血流成像装置10的处理器105从至少两组速度分量中确定目标位置处的第一速度分量和第二速度分量;并将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量中选取第一像素点对应的速度分量,并将第一像素点对应的速度分量确定为目标位置处对应的第一速度分量,其中,第一像素点是第一组速度分量对应的全部像素点中的任意一个像素点;超声向量血流成像装置10的处理器105从第二组速度分量中选取第二像素点对应的速度分量,并将第二像素点对应的速度分量确定为目标位置处对应的第二速度分量,其中,第二像素点是第二组速度分量对应的全部像素点中的任意一个像素点,第一像素点和第二像素点的位置重合。
S104、对至少两组速度分量进行合成,确定目标位置处的速度分量,其中,目标位置为目标区域内的待显示像素点位置。
当超声向量血流成像装置10的处理器105得获取到目标区域对应的至少两组速度分量之后,超声向量血流成像装置10的处理器105就要对至少两个速度分量进行合成,确定目标位置处的速度分量了。
本发明实施例中,超声向量血流成像装置10的处理器105将第一速度分量和第二速度分量进行合成,得到目标位置处的速度向量。
示例性的,图6为目标位置处的两个不同发射角度对应的两个速度分量,将这两个速度分量进行角度合成,合成的速度向量即为目标位置的速度向量。
示例性的,如图7所示,超声向量血流成像装置在发射角度1和发射角度2下发射两次聚焦波,此时发射角度1对应的回波信号和发射角度2对应的回波信号之间的重叠区域即为目标区域,以发射角度1对应的计算点作为目标位置,确定重叠区域中发射角度1的计算点A1,查找与A1相邻的发射角度2对应的4个计算点,对这4个计算点进行4点插值计算,得到A1处发射角度2对应的速度分量,将发射角度2对应的速度分量和发射角度1对应的速度分量进行速度合成,得到A1位置的速度向量。
S105、将速度向量显示在超声血流图像中的目标位置处。
当超声向量血流成像装置10的处理器105确定出目标位置处的速度向量之后,超声向量血流成像装置10的处理器105就要将速度向量显示在超声血流图像中的目标位置处了。
本发明实施例中,超声向量血流成像装置10的处理器105通过箭头的形式在超声血流图像中表征速度向量,超声向量血流成像装置10按照预设显示策略,在超声血流图像中的目标位置处显示箭头。
本发明实施例中,超声血流图像包括二维灰阶图像、多普勒彩色血流图或者二维灰阶图像和多普勒彩色血流图像一起显示,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
本发明实施例中,速度向量包括速度大小和速度方向,其中,箭头方向即为目标位置的血流速度方向,根据速度大小确定箭头的长度、箭头的大小和箭头的粗细中的至少一个。
可选的,箭头的长度与速度大小、速度大小的平方或者速度大小的平方根成正比,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
本发明实施例中,利用箭头的不同程度颜色来表征速度向量,即根据速度方向确定箭头的头部颜色,根据速度大小确定箭头的尾部颜色。
可以理解的是,超声向量血流成像装置确定目标扫描对象在超声血流图像中的目标区域,并获取目标区域对应的至少两组速度分量,之后对至少两组速度分量进行处理,得到目标位置处的速度向量,最后将速度向量显示在超声血流图像中的目标位置处,由于是通过对至少两组速度分量进行处理实现超声向量血流成像过程,无需依赖高端的超声平台对接收波束进行复杂的处理,从而降低了超声向量血流成像过程的复杂程度。
本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置10,该超声向量血流成像装置10中包括超声探头100,如图10所示,该方法可以包括:
S201、超声向量血流成像装置在至少两个发射角度按照预设时间交替地对目标扫描对象分别发射至少两次超声波。
本发明实施例提供的一种超声向量血流成像方法适用于基于至少两个发射角度和插值计算进行超声向量血流成像的场景下。
本发明实施例中,超声向量血流成像装置10的处理器105预先设置至少两个发射角度,超声向量血流成像装置10的处理器105通过调整超声探头100的发射孔径的大小和位置来调整多个发射角度。
本发明实施例中,对于超声探头100的探头边缘位置,将至少两个发射角度中的一个发射角度确定为不同的发射角度。
示例性的,如图4所示,探头的左边缘位置和右边缘位置分别对应两个发射角度,对于左边缘位置,发射角度为垂直和偏左;对于右边缘位置,发射角度为垂直和偏右。
可以理解的是,对超声探头100的两个边缘位置发射两组不同的发射角度能够得到更宽的血流成像区域。
本发明实施例中,目标扫描对象为血管组织,具体的根据实际情况进 行选择,本发明实施例不做具体的限定。
本发明实施例中,超声向量血流成像装置10的发射电路101采用超声波发射方式,在至少两个发射角度按照预设时间交替地对目标扫描对象分别发射至少两次超声波。
本发明实施例中,超声波包括传统的聚焦波、平面波或者发散波,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
示例性的,如图3所示,有1和2两个发射角度,发射次数为5次,则超声向量血流成像装置按照1212121212的形式进行发射。
本发明实施例中,根据发射声场的强度确定目标扫描对象的位置,以使超声向量血流成像装置10的发射电路101在扫描区域进行扫描时,扫描区域内的目标扫描位置所处的位置为多角度聚焦波的叠加区域。
示例性的,如图2所示,有两个发射角度,分别为从发射孔径1发出的垂直角度和从发射孔径2发出的偏左角度,分别形成两个不同角度的聚焦波,则目标扫描对象的位置为虚斜线代表的两个角度的聚焦波重叠扫描区域。
S202、超声向量血流成像装置接收响应于超声波的至少两个接收角度的回波信号。
当超声向量血流成像装置10的发射电路101在至少两个发射角度按照预设时间交替地对目标扫描对象分别发射至少两次超声波之后,超声向量血流成像装置10的接收电路103就要接收响应于超声波的至少两个接收角度的回波信号了。
本发明实施例中,超声向量血流成像装置10的接收电路103利用接收电路接收响应于超声波的超声回波信号,超声向量血流成像装置10的处理器105对超声回波信号进行波束合成,得到多角度波束合成数据,之后对进行多角度波束合成数据壁滤波,得到回波信号。
S203、超声向量血流成像装置根据回波信号生成超声血流图像。
当超声向量血流成像装置10的接收电路103接收响应于超声波的至少两个接收角度的回波信号之后,超声向量血流成像装置10的处理器105就要根据回波信号生成超声血流图像了。
本发明实施例中,超声向量血流成像装置10的处理器105对回波信号进行处理,得到多普勒彩色血流图。
进一步地,超声向量血流成像装置10的发射电路101采用另一套发射条件进行发射,并对接收电路103接收到的回波数据依次进行波束合成和灰阶图像处理,得到二维灰阶图像。
本发明实施例中,发射条件指发射波形,发射信号的中心频率,发射信号的长度(周期数)等。
本发明实施例中,超声血流图像包括二维灰阶图像、多普勒彩色血流图或者二维灰阶图像和多普勒彩色血流图像一起显示的图像,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
S204、超声向量血流成像装置根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域。
当超声向量血流成像装置10的处理器105根据回波信号确定超声血流图像之后,超声向量血流成像装置10就要根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域了。
本发明实施例中,超声向量血流成像装置10的处理器105根据发射声场的强度确定目标扫描对象的位置,以使超声向量血流成像装置10在扫描区域进行扫描时,扫描区域内的目标扫描对象所处的目标区域为多角度聚焦波的叠加区域。
S205、超声向量血流成像装置获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
当超声向量血流成像装置10的处理器105根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域之后,超声向量血流 成像装置10的处理器105就要获取目标区域对应的至少两组速度分量了。
本发明实施例中,超声向量血流成像装置10的处理器105对回波信号进行多普勒超声血流计算,得到回波信号对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
本发明实施例中,多普勒超声血流计算公式为:
Figure PCTCN2018102789-appb-000005
其中,c为超声传播速度,f 0为探头发射信号的中心频率,f PRF为发射脉冲重复频率,
Figure PCTCN2018102789-appb-000006
是取实部算子,
Figure PCTCN2018102789-appb-000007
是取虚部算子。
Figure PCTCN2018102789-appb-000008
其中,N为在目标扫描对象的同一个位置的发射次数,j为虚数单位。计算得到的v是目标扫描对象的实际速度沿多个发射角度的速度分量。
本发明实施例中,采用多普勒超声血流计算,计算出每个发射角度下每个计算点对应的速度分量,进而得到每个发射角度下的每组速度分量,最后得到至少两组速度分量。
S206、超声向量血流成像装置对至少两组速度分量进行插值计算,确定目标位置处的至少两个速度分量。
当超声向量血流成像装置10的处理器105获取目标区域对应的至少两组速度分量之后,超声向量血流成像装置10的处理器105就要对至少两组速度分量进行插值计算,确定目标位置处的至少两个速度分量了。
在一种可能的实现方式中,超声向量血流成像装置10的处理器105从第一组速度分量中确定目标位置处对应的第一速度分量,其中,第一组速度分量是至少两组速度分量中的任意一组速度分量,第一速度分量是第一组速度分量中的其中一个速度分量;对第二组速度分量进行插值计算确定目标位置处对应的第二速度分量,其中,第二组速度分量是至 少两组速度分量中不同于第一组速度分量中的其他至少一组速度分量;将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量对应的全部像素点中确定第一像素点,并将第一像素点对应的速度分量确定为目标位置处对应的第一速度分量,其中,第一像素点是第一组速度分量对应的全部像素点中的任意一个像素点;之后,超声向量血流成像装置10的处理器105获取与目标位置相邻的至少两个第二像素点,其中,至少两个第二像素点是第二组速度分量对应的全部像素点中的至少两个像素点;对至少两个第二像素点对应的至少两个速度分量进行插值计算,得到第二速度分量。
本发明实施例中,插值计算方法包括4点插值计算方法或者8点插值计算方法,具体的插值个数根据实际情况进行选择,本发明实施例不做具体的限定。
在一种可能的实现方式中,超声向量血流成像装置10的处理器105对第一组速度分量进行插值计算确定目标位置处对应的第一速度分量,其中,第一组速度分量是至少两组速度分量中的任意一组速度分量;超声向量血流成像装置10的处理器105对第二组速度分量进行插值计算确定目标位置处对应的第二速度分量,其中,第二组速度分量是至少两组速度分量中不同于第一组速度分量中的其他至少一组速度分量;超声向量血流成像装置10的处理器105将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量中对应的全部像素点中获取目标位置处相邻的至少两个第一像素点,其中,至少两个第一像素点是第一组速度分量对应的全部像素点中的至少两个像素点;对至少两个第一像素点对应的至少两个速度分量进行插值计算,得到第一速度分量;超声向量血流成像装置10的处理器105从第 二组速度分量中对应的全部像素点中获取目标位置处相邻的至少两个第二像素点,其中,至少两个第二像素点是第一组速度分量对应的全部像素点中的至少两个像素点;对至少两个第二像素点对应的至少两个速度分量进行插值计算,得到第二速度分量。
S207、超声向量血流成像装置对至少两个速度分量进行合成,确定目标位置处的速度向量,其中,目标位置为目标区域内的待显示像素点位置。
当超声向量血流成像装置10的处理器105对至少两组速度分量进行插值计算,确定目标位置处的至少两个速度分量之后,超声向量血流成像装置10的处理器105就要对至少两个速度分量进行合成,确定目标位置处的速度向量了。
本发明实施例中,超声向量血流成像装置10的处理器105将第一速度分量和第二速度分量进行合成,得到目标位置处的速度向量。
示例性的,图6为目标位置处的两个不同发射角度对应的两个速度分量,将这两个速度分量进行角度合成,合成的速度向量即为目标位置的速度向量。
示例性的,如图7所示,超声向量血流成像装置在发射角度1和发射角度2下发射两次聚焦波,此时发射角度1对应的回波信号和发射角度2对应的回波信号之间的重叠区域即为目标区域,以发射角度1对应的计算点作为目标位置,确定重叠区域中发射角度1的计算点A1,查找与A1相邻的发射角度2对应的4个计算点,对这4个计算点进行4点插值计算,得到A1处发射角度2对应的速度分量,将发射角度2对应的速度分量和发射角度1对应的速度分量进行速度合成,得到A1位置的速度向量。
S208、超声向量血流成像装置根据速度向量确定箭头的显示形式。
当超声向量血流成像装置10的处理器105对至少两个速度分量进行合 成,确定目标位置处的速度向量之后,超声向量血流成像装置10的处理器105就要根据速度向量确定箭头的显示形式了。
本发明实施例中,超声向量血流成像装置10的处理器105通过箭头的形式在超声血流图像中表征速度向量。
本发明实施例中,箭头的显示形式包括箭头的大小、长度、粗细、方向和颜色中的至少一种,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
本发明实施例中,速度向量包括速度大小和速度方向,其中,箭头方向即为目标位置的血流速度方向,超声向量血流成像装置10的处理器105根据速度大小确定箭头的尺寸或者箭头的颜色中的至少一个。
本发明实施例中,箭头的尺寸包括箭头的长度、大小和粗细中的至少一种,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
可选的,箭头的长度与速度大小、速度大小的平方或者速度大小的平方根成正比,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
示例性的,如图8所示,箭头1和箭头2的速度方向相同,箭头1的速度大小为50cm/s,箭头2的速度大小为20cm/s,故,箭头1的大小大于箭头2的大小。
本发明实施例中,超声向量血流成像装置10的处理器105利用箭头的不同程度颜色来表征速度向量,即根据速度方向确定箭头的头部颜色,根据速度大小确定箭头的尾部颜色。
示例性的,如图9所示,箭头1和箭头2的头部颜色均为深色,表征箭头1和箭头2的方向相同,箭头2和箭头3的尾部颜色均为深色,表征箭头2和箭头3速度大小相同。
S209、超声向量血流成像装置根据显示形式在目标位置处显示箭头,以在超声血流图像中的目标位置处显示速度向量。
当超声向量血流成像装置10的处理器105根据速度向量确定箭头的显示形式之后,超声向量血流成像装置10的处理器105就要根据显示形式在目标位置处显示箭头,以在超声血流图像中的目标位置处显示速度向量了。
本发明实施例中,超声向量血流成像装置10的发射电路101采用两套发射条件轮流发射,分别得到二维灰阶图像和多普勒彩色血流图,其中,发射条件指,发射波形,发射信号的中心频率,发射信号的长度(周期数)等。
本发明实施例中,超声成像血流成像装置在对回波信号进行多普勒超声血流计算之后,得到多普勒彩色血流图。
本发明实施例中,超声血流图像包括二维灰阶图像、多普勒彩色血流图或者二维灰阶图像和多普勒彩色血流图一起显示,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
本发明实施例中,二维灰阶图像和多普勒彩色血流图组成传统的彩超显示模式,即B图和彩色血流一起显示。
本发明实施例中,二维灰阶图像、多普勒彩色血流图和速度向量组成一种新的血流显示模式,即显示传统彩超的同时,再在彩超上显示速度向量。
本发明实施例中,二维灰阶图像和速度向量组成另一种不同的显示方法,这样可以更清楚的看到B图二维结构,还可以看到血流速度向量。
本发明实施例中,用户可以在超声向量血流图中自由标注待显示的速度向量的位置。
示例性的,图11为超声向量血流成像装置,通过发射/接收选择开关来控制探头进行超声波发射或者超声波接收的过程,超声向量血流成像装置利用发射电路激励探头向扫描对象发射多角度聚焦波,之后,超声向量血流成像装置利用接收电路激励探头接收响应多角度聚焦波的多角度接收信号,利用波束合成模块将多角度接收信号进行波束合成,得到多角度波束 合成数据,利用壁滤波模块将多角度波束合成数据处理成多角度回波信号,与此同时还可以利用灰阶图像处理模块将多角度波束合成数据处理成二维灰阶图像,然后利用多普勒血流测量模块对多角度回波信号进行多普勒血流计算,分别得到多普勒彩色血流图和多角度回波信号对应的多组速度分量,最后通过血流速度向量合成模块将多组速度分量进行速度向量合成,得到目标扫描对象的实际速度向量。
可以理解的是,超声向量血流成像装置10确定目标扫描对象在超声血流图像中的目标区域,并获取目标区域对应的至少两组速度分量,之后对至少两组速度分量进行处理,得到目标位置处的速度向量,最后将速度向量显示在超声血流图像中的目标位置处,由于是通过对至少两组速度分量进行处理实现超声向量血流成像过程,无需依赖高端的超声平台,对接收波束进行复杂的处理,从而降低了超声向量血流成像过程的复杂程度。
本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置10,该超声向量血流成像装置10中包括超声探头100,如图12所示,该方法可以包括:
S301、超声向量血流成像装置在至少两个发射角度按照预设时间交替地对目标扫描对象分别发射至少两次超声波。
本发明实施例提供的一种超声向量血流成像方法适用于基于至少两个发射角度和波束合成计算进行超声向量血流成像的场景下。
这里,本发明实施例的S301的描述与S201的描述一致,此处不再赘述。
S302、超声向量血流成像装置接收响应于超声波的至少两个接收角度的回波信号。
这里,本发明实施例的S302的描述与S202的描述一致,此处不再赘述。
S303、超声向量血流成像装置根据回波信号生成超声血流图像。
这里,本发明实施例的S303的描述与S203的描述一致,此处不再赘述。
S304、超声向量血流成像装置根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域。
这里,本发明实施例的S304的描述与S204的描述一致,此处不再赘述。
S305、超声向量血流成像装置获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
这里,本发明实施例的S305的描述与S205的描述一致,此处不再赘述。
S306、超声向量血流成像装置从至少两组速度分量中选取目标位置处的至少两个速度分量。
本发明实施例中,波束合成方法是针对相同像素点得到的相同位置上不同角度下的速度分量,超声向量血流成像装置10的处理器105从至少两组速度分量中确定目标位置处的第一速度分量和第二速度分量;将第一速度分量和第二速度分量确定为至少两个速度分量。
具体的,超声向量血流成像装置10的处理器105从第一组速度分量中选取第一像素点对应的速度分量,并将第一像素点对应的速度分量确定为目标位置处对应的第一速度分量,其中,第一像素点是第一组速度分量对应的全部像素点中的任意一个像素点;超声向量血流成像装置10的处理器105从第二组速度分量中选取第二像素点对应的速度分量,并将第二像素点对应的速度分量确定为目标位置处对应的第二速度分量,其中,第二像素点是第二组速度分量对应的全部像素点中的任意一个像素点,第一像素点和第二像素点的位置重合。
S307、超声向量血流成像装置对至少两个速度分量进行合成,确定目标位置处的速度向量,其中,目标位置为目标区域内的待显示像素点位置。
这里,本发明实施例的S307的描述与S207的描述一致,此处不再赘述。
S308、超声向量血流成像装置根据速度向量确定箭头的显示形式。
这里,本发明实施例的S308的描述与S208的描述一致,此处不再赘述。
S309、超声向量血流成像装置根据显示形式在目标位置处显示箭头,以在超声血流图像中的目标位置处显示速度向量。
这里,本发明实施例的S309的描述与S209的描述一致,此处不再赘述。
本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置10,该超声向量血流成像装置10中包括超声探头100,如图13所示,该方法可以包括:
S401、超声向量血流成像装置在一个发射角度对目标扫描对象发射至少两次超声波。
本发明实施例提供的一种超声向量血流成像方法适用于超声向量血流成像装置10基于一个发射角度和插值算法进行超声向量血流成像的场景下。
本发明实施例中,超声向量血流成像装置10的处理器105通过调整超声探头100的发射孔径的大小和位置来调整发射角度,之后超声向量血流成像装置10的发射电路101在一个发射角度对目标扫描对象进行多至少两次超声波的扫描过程。
本发明实施例中,目标扫描对象为血管组织,具体的根据实际情况进行选择,本发明实施例不做具体的限定。
S402、超声向量血流成像装置接收响应于超声波的至少两个接收角度的回波信号。
这里,本发明实施例的S402的描述与S202的描述一致,此处不再 赘述。
S403、超声向量血流成像装置根据回波信号生成超声血流图像。
这里,本发明实施例的S403的描述与S203的描述一致,此处不再赘述。
S404、超声向量血流成像装置根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域。
这里,本发明实施例的S404的描述与S204的描述一致,此处不再赘述。
S405、超声向量血流成像装置获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
这里,本发明实施例的S405的描述与S205的描述一致,此处不再赘述。
S406、超声向量血流成像装置对至少两组速度分量进行插值计算,确定目标位置处的至少两个速度分量。
这里,本发明实施例的S406的描述与S206的描述一致,此处不再赘述。
S407、超声向量血流成像装置对至少两个速度分量进行合成,确定目标位置处的速度向量,其中,目标位置为目标区域内的待显示像素点位置。
这里,本发明实施例的S407的描述与S207的描述一致,此处不再赘述。
S408、超声向量血流成像装置根据速度向量确定箭头的显示形式。
这里,本发明实施例的S408的描述与S208的描述一致,此处不再赘述。
S409、超声向量血流成像装置根据显示形式在目标位置处显示箭头,以在超声血流图像中的目标位置处显示速度向量。
这里,本发明实施例的S409的描述与S209的描述一致,此处不再赘 述。
本发明实施例提供一种超声向量血流成像方法,应用于超声向量血流成像装置10,该超声向量血流成像装置10中包括超声探头100,如图14所示,该方法可以包括:
S501、超声向量血流成像装置在一个发射角度对目标扫描对象发射至少两次超声波。
本发明实施例提供的一种超声向量血流成像方法适用于超声向量血流成像装置10基于一个发射角度和波束合成算法进行超声向量血流成像的场景下。
这里,本发明实施例的S501的描述与S401的描述一致,此处不再赘述。
S502、超声向量血流成像装置接收响应于超声波的至少两个接收角度的回波信号。
这里,本发明实施例的S502的描述与S402的描述一致,此处不再赘述。
S503、超声向量血流成像装置根据回波信号生成超声血流图像。
这里,本发明实施例的S503的描述与S403的描述一致,此处不再赘述。
S504、超声向量血流成像装置根据回波信号的重叠区域确定为目标扫描对象在超声血流图像中的目标区域。
这里,本发明实施例的S504的描述与S404的描述一致,此处不再赘述。
S505、超声向量血流成像装置获取目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量。
这里,本发明实施例的S505的描述与S405的描述一致,此处不再赘述。
S506、超声向量血流成像装置从至少两组速度分量中选取目标位置处的至少两个速度分量。
这里,本发明实施例的S506的描述与S306的描述一致,此处不再赘述。
S507、超声向量血流成像装置对至少两个速度分量进行合成,确定目标位置处的速度向量,其中,目标位置为目标区域内的待显示像素点位置。
这里,本发明实施例的S507的描述与S407的描述一致,此处不再赘述。
S508、超声向量血流成像装置根据速度向量确定箭头的显示形式。
这里,本发明实施例的S508的描述与S408的描述一致,此处不再赘述。
S509、超声向量血流成像装置根据显示形式在目标位置处显示箭头,以在超声血流图像中的目标位置处显示速度向量。
这里,本发明实施例的S509的描述与S409的描述一致,此处不再赘述。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者系统不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者系统所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者系统中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述,不代表实施例的优劣。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品 的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本发明各个实施例所述的方法。
上面结合附图对本发明的实施例进行了描述,但是本发明并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本发明的启示下,在不脱离本发明宗旨和权利要求所保护的范围情况下,还可做出很多形式,这些均属于本发明的保护之内。
工业实用性
在本发明实施例中,超声向量血流成像装置确定目标扫描对象在超声血流图像中的目标区域,并获取目标区域对应的至少两组速度分量,之后对至少两组速度分量进行处理,得到目标位置处的速度向量,最后将速度向量显示在超声血流图像中的目标位置处,由于是通过对至少两组速度分量进行处理实现超声向量血流成像过程,无需依赖高端的超声平台,对接收波束进行复杂的处理,从而降低了超声向量血流成像过程的复杂程度。

Claims (31)

  1. 一种超声向量血流成像方法,应用于超声向量血流成像装置,所述方法包括:
    确定目标扫描对象在超声血流图像中的目标区域;
    获取所述目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量;
    对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,所述目标位置为所述目标区域内的待显示像素点位置;
    对所述至少两个速度分量进行合成,确定所述目标位置处的速度向量;
    将所述速度向量显示在所述超声血流图像中的所述目标位置处。
  2. 根据权利要求1所述的方法,其中,所述对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,包括:
    对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量。
  3. 根据权利要求1所述的方法,其中,所述对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,包括:
    从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量。
  4. 根据权利要求2所述的方法,其中,所述对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量,包括:
    从第一组速度分量中确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量,所述第一速度分量是第一组速度分量中的其中一个速度分量;
    对第二组速度分量进行插值计算确定所述目标位置处对应的第二速 度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;
    将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
  5. 根据权利要求4所述的方法,其中,所述从第一组速度分量中确定所述目标位置处对应的第一速度分量,包括:
    从所述第一组速度分量对应的全部像素点中确定第一像素点,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;
    相应的,所述对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,包括:
    获取与所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第二组速度分量对应的全部像素点中的至少两个像素点;
    对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
  6. 根据权利要求2所述的方法,其中,所述对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量,包括:
    对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量;
    对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;
    将所述第一速度分量和所述第二速度分量确定为所述至少两个速度 分量。
  7. 根据权利要求6所述的方法,其中,所述对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,包括:
    从所述第一组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第一像素点,其中,所述至少两个第一像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;
    对所述至少两个第一像素点对应的至少两个速度分量进行插值计算,得到所述第一速度分量;
    相应的,所述对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,包括:
    从所述第二组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;
    对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
  8. 根据权利要求3所述的方法,其中,所述从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量,包括:
    从第一组速度分量中选取第一像素点对应的速度分量,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;
    从第二组速度分量中选取第二像素点对应的速度分量,并将所述第二像素点对应的速度分量确定为所述目标位置处对应的第二速度分量,其中,所述第二像素点是所述第二组速度分量对应的全部像素点中的任意一个像素点,所述第一像素点和所述第二像素点的位置重合。
  9. 根据权利要求1所述的方法,其中,所述将所述速度向量显示在 所述超声血流图像中的所述目标位置处,包括:
    根据所述速度向量确定箭头的显示形式;
    根据所述显示形式在所述目标位置处显示所述箭头,以在所述目标位置处显示所述速度向量。
  10. 根据权利要求9所述的方法,其中,所述速度向量包括速度大小和速度方向,所述根据所述速度向量确定箭头的显示形式,包括:
    将所述速度方向确定为所述箭头的方向;
    根据所述速度大小确定所述箭头的尺寸和所述箭头的颜色中的至少一个。
  11. 根据权利要求1至10任一项所述的方法,其中,所述确定目标扫描对象在超声血流图像中的目标区域之前,所述方法还包括:
    在至少两个发射角度分别对所述目标扫描对象发射至少两次超声波;
    接收响应于所述超声波的至少两个接收角度的回波信号;
    根据所述回波信号生成所述超声血流图像。
  12. 根据权利要求1至10任一项所述的方法,其中,所述确定目标扫描对象在超声血流图像中的目标区域之前,所述方法还包括:
    在一个发射角度对所述目标扫描对象发射至少两次超声波;
    接收响应于所述超声波的至少两个接收角度的回波信号;
    根据所述回波信号生成所述超声血流图像。
  13. 根据权利要求11所述的方法,其中,所述在至少两个发射角度对所述目标扫描对象分别发射至少两次超声波,包括:
    在所述至少两个发射角度按照预设时间交替地对所述目标扫描对象分别发射至少两次超声波。
  14. 根据权利要求11或12所述的方法,其中,所述获取所述目标区域对应的至少两组速度分量,包括:
    对所述目标区域对应的所述回波信号进行多普勒超声血流计算,得 到所述至少两组速度分量。
  15. 根据权利要求11或12所述的方法,其中,所述确定目标扫描对象在超声血流图像中的目标区域,包括:
    根据所述回波信号的重叠区域确定为所述目标区域。
  16. 一种超声向量血流成像装置,所述超声向量血流成像装置包括:
    探头;
    发射电路,所述发射电路激励所述探头向目标扫描对象发射超声波;
    接收电路,所述接收电路通过所述探头接收从所述目标扫描对象返回的超声回波以获得回波信号;
    处理器,所述处理器处理所述回波信号以获得所述目标扫描对象的超声血流图像;
    显示器,所述显示器显示所述超声血流图像;
    其中,所述处理器具体执行如下步骤:确定目标扫描对象在超声血流图像中的目标区域;获取所述目标区域对应的至少两组速度分量,其中,每组速度分量包括至少一个速度分量;对所述至少两组速度分量进行处理,确定目标位置处的至少两个速度分量,其中,所述目标位置为所述目标区域内的待显示像素点位置;对所述至少两个速度分量进行合成,确定所述目标位置处的速度向量;将所述速度向量显示在所述超声血流图像中的所述目标位置处。
  17. 根据权利要求16所述的超声向量血流成像装置,其中,
    所述处理器,还用于对所述至少两组速度分量进行插值计算,确定所述目标位置处的至少两个速度分量。
  18. 根据权利要求16所述的超声向量血流成像装置,其中,
    所述处理器,还用于从所述至少两组速度分量中选取所述目标位置处的至少两个速度分量。
  19. 根据权利要求17所述的超声向量血流成像装置,其中,
    所述处理器,还用于从第一组速度分量中确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量,所述第一速度分量是第一组速度分量中的其中一个速度分量;对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
  20. 根据权利要求19所述的超声向量血流成像装置,其中,
    所述处理器,还用于从所述第一组速度分量对应的全部像素点中确定第一像素点,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;获取与所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第二组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
  21. 根据权利要求20所述的超声向量血流成像装置,其中,
    所述处理器,还用于对第一组速度分量进行插值计算确定所述目标位置处对应的第一速度分量,其中,所述第一组速度分量是所述至少两组速度分量中的任意一组速度分量;对第二组速度分量进行插值计算确定所述目标位置处对应的第二速度分量,其中,所述第二组速度分量是所述至少两组速度分量中不同于所述第一组速度分量中的其他至少一组速度分量;将所述第一速度分量和所述第二速度分量确定为所述至少两个速度分量。
  22. 根据权利要求21所述的超声向量血流成像装置,其中,
    所述处理器,还用于从所述第一组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第一像素点,其中,所述至少两个 第一像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第一像素点对应的至少两个速度分量进行插值计算,得到所述第一速度分量;从所述第二组速度分量中对应的全部像素点中获取所述目标位置处相邻的至少两个第二像素点,其中,所述至少两个第二像素点是所述第一组速度分量对应的全部像素点中的至少两个像素点;对所述至少两个第二像素点对应的至少两个速度分量进行插值计算,得到所述第二速度分量。
  23. 根据权利要求18所述的超声向量血流成像装置,其中,
    所述处理器,还用于从第一组速度分量中选取第一像素点对应的速度分量,并将所述第一像素点对应的速度分量确定为所述目标位置处对应的第一速度分量,其中,所述第一像素点是所述第一组速度分量对应的全部像素点中的任意一个像素点;从第二组速度分量中选取第二像素点对应的速度分量,并将所述第二像素点对应的速度分量确定为所述目标位置处对应的第二速度分量,其中,所述第二像素点是所述第二组速度分量对应的全部像素点中的任意一个像素点,所述第一像素点和所述第二像素点的位置重合。
  24. 根据权利要求16所述的超声向量血流成像装置,其中,
    所述处理器,还用于根据所述速度向量确定箭头的显示形式;
    所述显示器,还用于根据所述显示形式在所述目标位置处显示所述箭头,以在所述目标位置处显示所述速度向量。
  25. 根据权利要求24所述的超声向量血流成像装置,其中,所述速度向量包括速度大小和速度方向,
    所述处理器,还用于将所述速度方向确定为所述箭头的方向;根据所述速度大小确定所述箭头的尺寸和所述箭头的颜色中的至少一个。
  26. 根据权利要求16至25任一项所述的超声向量血流成像装置,其中,
    所述发射电路,具体用于在至少两个发射角度分别对所述目标扫描对象发射至少两次超声波;
    所述接收电路,具体用于接收响应于所述超声波的至少两个接收角度的回波信号;
    所述处理器,还用于根据所述回波信号生成所述超声血流图像。
  27. 根据权利要求16至26任一项所述的超声向量血流成像装置,其中,
    所述发射电路,还用于在一个发射角度对所述目标扫描对象发射至少两次超声波;
    所述接收电路,还用于接收响应于所述超声波的至少两个接收角度的回波信号;
    所述处理器,还用于根据所述回波信号生成所述超声血流图像。
  28. 根据权利要求26所述的超声向量血流成像装置,其中,
    所述发射电路,还用于在所述至少两个发射角度按照预设时间交替地对所述目标扫描对象分别发射至少两次超声波。
  29. 根据权利要求27或28所述的超声向量血流成像装置,其中,
    所述处理器,还用于对所述目标区域对应的所述回波信号进行多普勒超声血流计算,得到所述至少两组速度分量。
  30. 根据权利要求27或28所述的超声向量血流成像装置,其中,
    所述处理器,还用于根据所述回波信号的重叠区域确定为所述目标区域。
  31. 一种存储介质,其上存储有计算机程序,应用于超声向量血流成像装置,该计算机程序被处理器执行时实现如权利要求1-15任一项所述的方法。
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