WO2018053739A1 - 穿刺增强方法、装置及系统 - Google Patents

穿刺增强方法、装置及系统 Download PDF

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Publication number
WO2018053739A1
WO2018053739A1 PCT/CN2016/099672 CN2016099672W WO2018053739A1 WO 2018053739 A1 WO2018053739 A1 WO 2018053739A1 CN 2016099672 W CN2016099672 W CN 2016099672W WO 2018053739 A1 WO2018053739 A1 WO 2018053739A1
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Prior art keywords
puncture
image frame
puncture needle
needle
scan
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PCT/CN2016/099672
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English (en)
French (fr)
Inventor
黄灿
姚斌
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深圳华声医疗技术有限公司
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Publication of WO2018053739A1 publication Critical patent/WO2018053739A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3403—Needle locating or guiding means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3403—Needle locating or guiding means
    • A61B2017/3413—Needle locating or guiding means guided by ultrasound

Definitions

  • the present invention relates to the field of ultrasonic imaging technology, and in particular, to a puncture enhancement method, device and system.
  • Puncture enhancement technology is now widely used in medical ultrasound practice to guide doctors to perform puncture surgery, but in the conventional B-mode, the smooth surface of the needle causes specular reflection of the needle, so that the ultrasound echo of the needle part Too weak, the visibility of the image display is too low, which is not conducive to the doctor's operation.
  • the second is to use an external device to guide the puncture operation, and to position it in the image during the ultrasound display, but in the actual operation, although the needle can be accurately positioned, the image of the needle itself is not clearly displayed in the image. Shown in the lack of enhanced display;
  • the third is to increase the image of the probe emitted by the probe at a large deflection angle to ensure that the direction of the ultrasonic wave is perpendicular to the needle body.
  • the main object of the present invention is to provide a puncture enhancement method, which aims to solve the technical problems of high cost, lack of enhanced display, and low practicability of the existing puncture enhancement technology to some extent.
  • the present invention provides a puncture enhancement method comprising the following steps:
  • the composite B-scan composite image frame is fused with the greatly deflected image frame at the puncture needle and its vicinity.
  • the method further includes:
  • the fused image frame is post-processed and imaged.
  • the step of fusing the conventional B-scan composite image frame with the greatly deflected image frame in the puncture needle and its vicinity includes:
  • the composite image frame and the corresponding pixels of the large deflection image frame are superimposed on the puncture needle and its vicinity.
  • the post processing includes image enhancement, scan coordinate transformation, and pseudo color.
  • Another object of the present invention is to provide a puncture enhancement device comprising:
  • the deflecting wave transmitting module transmits another frame of ultrasonic waves deflected at a large angle in addition to the conventional B-scan;
  • the puncture needle detecting module detects the position and direction of the puncture needle by using a magnetic navigation module in the ultrasonic probe;
  • a deflection angle specifying module that specifies a direction of emission of the next round of large-angle deflection ultrasonic waves according to the detected position and direction of the puncture needle;
  • the fusion module fuses the composite B-scan composite image frame with the greatly deflected image frame at the puncture needle and its vicinity.
  • the puncture enhancement device further includes:
  • the post-processing and display module performs post-processing on the fused image frame and displays the image.
  • the fusion module includes:
  • a detecting unit that acquires a needle body parameter of the puncture needle
  • a weighting unit assigning weights to the corresponding pixels of the composite image frame and the large deflection image frame in the needle body and the vicinity thereof;
  • the superimposing unit superimposes the composite image frame and the corresponding pixels of the large deflection image frame in the puncture needle and its vicinity.
  • the post processing includes image enhancement, scan coordinate transformation, and pseudo color.
  • the invention also provides a puncture augmentation system comprising:
  • Ultrasound probe for transmitting and receiving ultrasound
  • the display displays the output image of the ultrasonic scan.
  • the puncture enhancement method of the invention is applied to clinical puncture, and the ultrasonic probe emits a frame of high-angle deflection ultrasonic wave in addition to the conventional B-scan to enhance the display of the puncture needle in the ultrasonic image, and the magnetic navigation through the ultrasonic probe
  • the module detects the position and direction of the puncture needle, and then specifies the emission direction of the next round of large-angle deflection ultrasonic waves according to the position and direction of the detected puncture needle, so that the ultrasonic wave with large angle deflection can enhance the display of the puncture needle in the ultrasonic image in real time.
  • the composite B-scan composite image frame and the greatly deflected image frame are fused in the puncture needle and its vicinity to obtain an enhanced needle image.
  • the puncture enhancement method of the invention locates the puncture needle according to the magnetic navigation module in the ultrasonic probe, automatically adjusts the emission direction of the ultrasonic wave with large angle deflection, is convenient to operate, has accurate positioning, and can always maintain the best enhancement effect after fusion.
  • FIG. 1 is a flow chart of an embodiment of a puncture enhancement method according to the present invention.
  • step S40 in FIG. 1 is a specific flowchart of step S40 in FIG. 1;
  • FIG. 3 is a functional block diagram of an embodiment of a puncture-enhancing device of the present invention.
  • FIG. 4 is a specific block diagram of the fusion module of FIG. 3;
  • Figure 5 is a schematic illustration of an embodiment of a puncture augmentation system of the present invention.
  • the present invention provides a puncture enhancement method.
  • the piezoelectric transducer in the ultrasonic probe converts the voltage pulse excitation applied thereto into mechanical vibration to externally emit ultrasonic waves.
  • the ultrasonic probe also increases the ultrasonic wave that emits a large deflection angle;
  • the ultrasonic wave propagates in the medium, and generates reflected waves and scattered waves.
  • the probe After receiving the echo, the probe converts the vibration energy into an electrical signal, and after the modulus processing, generates corresponding image data and analyzes the same;
  • the parsed image data is cached after image pre-processing operations such as spatial recombination, wherein in the present invention, the parsed image data will further include image data with a large deflection angle;
  • the data buffer area buffers the processed intermediate data results to facilitate inspection and parameter adjustment
  • the image data after buffering is finally displayed on the display screen after image post-processing operations such as gain and dynamic range conversion.
  • FIG. 1 is a flowchart of an embodiment of a puncture enhancement method.
  • the puncture enhancement method includes the following steps:
  • S50 Perform post-processing on the fused image frame and display the image.
  • the puncture enhancement method of the embodiment is applied to clinical puncture, and in addition to controlling the ultrasonic probe to perform a conventional B-scan, another frame of ultrasonic waves deflected at a large angle is used to enhance the display of the puncture needle in the ultrasonic image through the ultrasonic probe.
  • the magnetic navigation module detects the position and direction of the puncture needle, and then specifies the emission direction of the next round of large-angle deflection ultrasonic waves according to the position and direction of the detected puncture needle, so that the ultrasonic wave with large angle deflection can enhance the puncture needle in the ultrasound in real time.
  • the composite image frame of the conventional B-scan is finally fused with the greatly deflected image frame in the puncture needle and its vicinity, and the enhanced needle image is obtained, after image enhancement, scanning coordinate transformation, pseudo-color, etc. After processing, it is displayed on the display screen.
  • the puncture needle is positioned according to the magnetic navigation module in the ultrasonic probe, and the ultrasonic direction of the large-angle deflection is automatically adjusted, the operation is convenient, the positioning is accurate, and the best enhancement effect can be maintained after the fusion. .
  • step S40 includes:
  • the step of fusing the composite B-scan composite image frame and the greatly deflected image frame in the puncture needle and its vicinity includes: obtaining the needle body parameters of the puncture needle, such as position and direction, Then, according to the above parameters, the composite image frame and the corresponding pixel of the large deflection image frame are given weights to the needle body of the puncture needle and its vicinity, and finally the composite image frame and the large deflection image are in the puncture needle and its vicinity.
  • the corresponding pixels of the frame are superimposed, so that the corresponding pixels of the needle body of the puncture needle are increased, and the imaging is more clear.
  • an embodiment of the present invention further provides a puncture enhancement apparatus 100, including:
  • the deflecting wave transmitting module 10 in addition to the conventional B-scan, additionally transmits a frame of ultrasonic waves deflected at a large angle;
  • the puncture needle detecting module 20 detects the position and direction of the puncture needle by using a magnetic navigation module in the ultrasonic probe;
  • the deflection angle specifying module 30 specifies the emission direction of the next round of large-angle deflection ultrasonic waves according to the detected position and direction of the puncture needle;
  • the fusion module 40 fuses the composite B-scan composite image frame with the greatly deflected image frame in the puncture needle and its vicinity
  • the post-processing and display module 50 performs post-processing on the fused image frame and displays the image.
  • the puncture enhancement device 100 of the present embodiment includes a deflection wave transmitting module 10, a puncture needle detecting module 20, a deflection angle specifying module 30, a fusion module 40, a post-processing and display module 50, wherein the deflection wave transmitting module 10 is used to control the ultrasound
  • the probe emits ultrasonic waves for regular B-scanning, and additionally transmits a frame of large-angle deflected ultrasonic waves to enhance the display of the puncture needle in the ultrasonic image.
  • the puncture needle detecting module 20 detects the position of the puncture needle by using the magnetic navigation module in the ultrasonic probe.
  • the deflection angle specifying module 30 specifies the emission direction of the ultrasonic wave deflected at a large angle according to the detected position and direction of the puncture needle, so that the ultrasonic wave is applied as perpendicularly as possible to the position where the puncture needle is located.
  • the fusion module 40 fuses the composite B-scan composite image frame with the greatly deflected image frame in the puncture needle and its vicinity, and finally performs post-processing and display module 50 image enhancement and scan coordinate transformation on the fused image frame and Post-processing operations such as pseudo-coloring, and displaying the processed fused image on the display screen.
  • the puncture-enhancing device 100 of the present embodiment positions the puncture needle according to the magnetic navigation module in the ultrasonic probe, automatically adjusts the emission direction of the ultrasonic wave with large angle deflection, is convenient to operate, has accurate positioning, and can always maintain the best enhancement after fusion. effect.
  • the fusion module 40 includes:
  • the detecting unit 41 acquires a needle body parameter of the puncture needle
  • the weighting unit 42 assigns weights to the corresponding pixels of the composite image frame and the large deflection image frame in the needle body and its vicinity according to the needle body parameter;
  • the superimposing unit 43 superimposes the composite image frame and the corresponding pixels of the large deflection image frame in the puncture needle and its vicinity.
  • the fusion module 40 includes a detecting unit 41, a weighting unit 42, and a superimposing unit 43, wherein the detecting unit 43 acquires the needle body parameters of the puncture needle, such as the position and direction of the puncture needle, etc., the weighting unit 42 according to the obtained needle body parameter of the puncture needle, in the needle body and its vicinity, weight is given to the corresponding pixel of the composite image frame and the large deflection image frame, and the superimposing unit 43 is conveniently placed in the puncture needle and its vicinity, and the composite image is The frame and the corresponding pixels of the large deflection image frame are superimposed, so that the corresponding pixels of the needle body of the puncture needle are increased, and the imaging is more clear.
  • the detecting unit 43 acquires the needle body parameters of the puncture needle, such as the position and direction of the puncture needle, etc.
  • the weighting unit 42 according to the obtained needle body parameter of the puncture needle, in the needle body and its vicinity, weight is given to the corresponding pixel of the composite image frame and
  • an embodiment of the present invention further provides a puncture augmentation system, including:
  • Ultrasound probe 500 transmitting and receiving ultrasonic waves
  • the display 700 displays an output image of the ultrasonic scan.
  • the puncture augmentation system of the embodiment includes a puncture augmentation device 100, a puncture needle 300, an ultrasonic probe 500, and a display 700.
  • the ultrasonic probe 500 transmits ultrasonic waves and large-angle deflected ultrasonic waves to the human body for puncture.
  • the ultrasonic wave encounters the human tissue and the puncture needle 300, generates reflected waves and scattered waves, and is recovered by the ultrasonic probe 500.
  • the puncture enhancement device 100 detects the position and direction information of the puncture needle, and specifies the emission direction of the next large deflection ultrasonic wave.
  • the conventional B-scan composite image frame is fused with the large deflection image frame in the puncture needle and its vicinity, and displayed on the display 700.
  • the puncture needle 300 is positioned according to the magnetic navigation module in the ultrasonic probe 500, and the emission direction of the ultrasonic wave of the large angle deflection is automatically adjusted to puncture the display 700.
  • the needle body of the needle 300 is clearly displayed, the operation is convenient, the positioning is accurate, and the best enhancement effect can be maintained after the fusion.

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Abstract

公开了一种穿刺增强方法、装置及系统。该穿刺增强方法包括步骤：在常规B扫描之外，另发射一帧大角度偏转的超声波，以增强穿刺针在超声图像中的显示（S10）；通过超声探头内的磁导航模块检测穿刺针的位置和方向（S20）；根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向，以便大角度偏转的超声波能够实时增强穿刺针在超声图像中的显示（S30）；最后将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合（S40）；对融合后的图像帧进行后处理，并成像显示（S50）。该穿刺增强方法根据超声探头内的磁导航模块对穿刺针进行定位，自动调整大角度偏转的超声波的发射方向，始终保持融合后具有最佳的增强效果。

Description

穿刺增强方法、装置及系统
技术领域
本发明涉及超声波成像技术领域，尤其涉及一种穿刺增强方法、装置及系统。
背景技术
穿刺增强技术如今广泛应用于医学超声实践中，以引导医生进行穿刺类手术，但在常规B超模式下，穿刺针的光滑表面，会引起针体的镜面反射，使得针体部分的超声回波过于微弱，图像显示的可见度太低，不利于医生进行操作。
目前穿刺增强技术主要有三种：
一是定制特殊的穿刺针，使其表面的镜面反射不再完美，从而增大接收到的回波，但是，由于医生在动手术时针对不同的病例，需要使用不同规格的穿刺针，无法专门定制，适用性较低，也增大了手术的成本；
二是采用外加设备来引导穿刺操作，在超声显示时在图像中对其进行定位，但是在实际操作中，虽然能够对针体进行精准定位，但并没有将针体本身的图像清晰地在图像中展现出来，缺乏增强显示；
三是增加一帧探头在大偏转角度下发射的图像，以保证超声波发射方向与穿刺针体垂直，但是由于人体内组织的复杂性，类似针体的结构很多，想要通过图像处理算法非常精确地判断其中针体的位置非常困难，而且此种手法需具备足够经验的人员才能实施，实用性较低。
发明内容
本发明的主要目的在于提供一种穿刺增强方法，旨在一定程度上解决现有的穿刺增强技术成本高、缺乏增强显示、及实用性较低的技术问题。
为实现上述目的，本发明提出一种穿刺增强方法，包括以下步骤：
控制超声探头在常规B扫描之外，另发射一帧大角度偏转的超声波；
利用超声探头内的磁导航模块检测穿刺针的位置和方向；
根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；
将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合。
进一步地，所述将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合的步骤之后，还包括：
对融合后的图像帧进行后处理，并成像显示。
进一步地，所述将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合的步骤包括：
获取穿刺针的针体参数；
依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
进一步地，所述后处理包括图像增强、扫描坐标变换、及伪彩。
本发明的另一目的在于提供一种穿刺增强装置，包括：
偏转波发射模块，在常规B扫描之外，另发射一帧大角度偏转的超声波；
穿刺针检测模块，利用超声探头内的磁导航模块检测穿刺针的位置和方向；
偏转角指定模块，根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；及
融合模块，将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合。
进一步地，该穿刺增强装置还包括：
后处理及显示模块，对融合后的图像帧进行后处理，并成像显示。
进一步地，所述融合模块包括：
检测单元，获取穿刺针的针体参数；
加权单元，依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
叠加单元，在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
进一步地，所述后处理包括图像增强、扫描坐标变换、及伪彩。
本发明还提供一种穿刺增强系统，包括：
如上所述的穿刺增强装置；
穿刺针；
超声探头，发射和接收超声波；及
显示器，显示超声波扫描的输出图像。
本发明的穿刺增强方法，应用于临床穿刺中，超声探头在常规B扫描之外，另发射一帧大角度偏转的超声波，以增强穿刺针在超声图像中的显示，通过超声探头内的磁导航模块检测穿刺针的位置和方向，然后根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向，以便大角度偏转的超声波能够实时增强穿刺针在超声图像中的显示，最后将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合，得到增强后的针体图像。本发明的穿刺增强方法，根据超声探头内的磁导航模块对穿刺针进行定位，自动调整大角度偏转的超声波的发射方向，操作方便，定位准确，能够始终保持融合后具有最佳的增强效果。
附图说明
图1为本发明穿刺增强方法一实施例的流程图；
图2为图1中步骤S40的具体流程图；
图3为本发明穿刺增强装置一实施例的功能模块图；
图4为图3中融合模块的具体模块图；
图5为本发明穿刺增强系统一实施例的示意图。
附图标号说明：
标号 名称 标号 名称
100 超声穿刺装置 50 后处理及显示模块
10 偏转波发射模块 41 检测单元
20 穿刺针检测模块 42 加权单元
30 偏转角指定模块 43 叠加单元
40 融合模块
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
众所周知，在常规B超模式下进行超声成像时，穿刺针的光滑表面会引起针体的镜面反射，从而导致针体部分的超声回波过于微弱，进而在超声成像中可见度过低，不利于医生参照超声图像进行穿刺操作，因而需要增强穿刺针在超声图像中的显示效果。
本发明提供一种穿刺增强方法。
超声成像的基本工作原理是：
1、超声探头内的压电换能器将施加在它上面的电压脉冲激励转换为机械振动，从而对外发射出超声波，在本发明中，超声探头还会增加发射大偏转角度的超声波；
2、超声波在媒介中传播，会产生反射波和散射波，探头接收到回波后，将振动能量变换成电信号，并经过模数处理后生成相应的图像数据并对其进行解析；
3、解析出的图像数据经过空间复合等图像前处理操作之后进行缓存，其中，在本发明中，解析出的图像数据还将包括大偏转角度的图像数据；
4、数据缓存区把处理的中间数据结果缓存下来，以方便检查和参数调节；
5、缓存后的图像数据经过增益、动态范围变换等图像后处理操作后最终显示于显示屏幕上。
参照图1，图1为穿刺增强方法一实施例的流程图，在该实施例中，穿刺增强方法包括以下步骤：
S10：控制超声探头在常规B扫描之外，另发射一帧大角度偏转的超声波；
S20：利用超声探头内的磁导航模块检测穿刺针的位置和方向；
S30：根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；
S40：将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合;
S50：对融合后的图像帧进行后处理，并成像显示。
本实施例的穿刺增强方法，应用于临床穿刺中，在控制超声探头进行常规的B扫描之外，另外发射一帧大角度偏转的超声波，以增强穿刺针在超声图像中的显示，通过超声探头内的磁导航模块检测穿刺针的位置和方向，然后根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向，以便大角度偏转的超声波能够实时增强穿刺针在超声图像中的显示，最后将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合，得到增强后的针体图像，经过图像增强、扫描坐标变换以及伪彩等后处理后，在显示屏幕上予以显示。
本实施例的穿刺增强方法，根据超声探头内的磁导航模块对穿刺针进行定位，自动调整大角度偏转的超声波的发射方向，操作方便，定位准确，能够始终保持融合后具有最佳的增强效果。
进一步地，步骤S40包括：
S41：获取穿刺针的针体参数；
S42：依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
S43：在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
本实施例的穿刺增强方法，将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合的步骤具体包括：获取穿刺针的针体参数，如位置和方向等，然后依据上述参数在穿刺针的针体及其附近区域，赋予权重给缓存区的复合图像帧和大偏转图像帧的对应像素，最后在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加，使得穿刺针的针体的对应像素增加，成像更加清晰。
参照图3，本发明一实施例还提出一种穿刺增强装置100，包括：
偏转波发射模块10，在常规B扫描之外，另发射一帧大角度偏转的超声波；
穿刺针检测模块20，利用超声探头内的磁导航模块检测穿刺针的位置和方向；
偏转角指定模块30，根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；
融合模块40，将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合
后处理及显示模块50，对融合后的图像帧进行后处理，并成像显示。
本实施例的穿刺增强装置100，包括偏转波发射模块10、穿刺针检测模块20、偏转角指定模块30、融合模块40、后处理及显示模块50，其中，偏转波发射模块10用于控制超声探头发射超声波进行常规的B扫描之外，另外发射一帧大角度偏转的超声波，以增强穿刺针在超声图像中的显示，穿刺针检测模块20利用超声探头内的磁导航模块检测穿刺针的位置和方向信息，偏转角指定模块30根据检测到的穿刺针的位置和方向，在下一轮超声波发射时指定大角度偏转的超声波的发射方向，使该超声波尽可能垂直地施加于穿刺针所在的位置，融合模块40将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合，最后由后处理及显示模块50对融合后的图像帧进行图像增强和扫描坐标变换以及伪彩等后处理操作，并将处理后的融合图像显示于显示屏幕中。
本实施例的穿刺增强装置100，根据超声探头内的磁导航模块对穿刺针进行定位，自动调整大角度偏转的超声波的发射方向，操作方便，定位准确，能够始终保持融合后具有最佳的增强效果。
进一步地，参照图4，融合模块40包括：
检测单元41，获取穿刺针的针体参数；
加权单元42，依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
叠加单元43，在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
本实施例的穿刺增强装置100，融合模块40包括检测单元41、加权单元42、及叠加单元43，其中，检测单元43获取穿刺针的针体参数，如穿刺针的位置和方向等，加权单元42依据获取到的穿刺针的针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素，方便叠加单元43在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加，使得穿刺针的针体的对应像素增加，成像更加清晰。
参照图5，本发明一实施例还提供一种穿刺增强系统，包括：
穿刺增强装置100；
穿刺针300；
超声探头500，发射和接收超声波；及
显示器700，显示超声波扫描的输出图像。
本实施例的穿刺增强系统，包括穿刺增强装置100、穿刺针300、超声探头500、及显示器700，在临床穿刺过程中，由超声探头500发射超声波和大角度偏转的超声波到人体进行穿刺的部位，超声波遇到人体组织和穿刺针300，产生反射波和散射波，再由超声探头500进行回收，穿刺增强装置100检测穿刺针的位置和方向信息，指定下一轮大偏转超声波的发射方向，在穿刺针及其附近区域将常规B扫描的复合图像帧与大偏转图像帧融合后，在显示器700上予以显示。
本实施例的穿刺增强系统，基于上述的穿刺增强装置100，根据超声探头500内的磁导航模块对穿刺针300进行定位，自动调整大角度偏转的超声波的发射方向，以在显示器700上把穿刺针300的针体清晰地显示出来，操作方便，定位准确，能够始终保持融合后具有最佳的增强效果。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (9)

  1. 一种穿刺增强方法，其特征在于，包括以下步骤：
    控制超声探头在常规B扫描之外，另发射一帧大角度偏转的超声波；
    利用超声探头内的磁导航模块检测穿刺针的位置和方向；
    根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；
    将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合。
  2. 根据权利要求1所述的穿刺增强方法，其特征在于，所述将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合的步骤之后，还包括：
    对融合后的图像帧进行后处理，并成像显示。
  3. 根据权利要求1或2所述的穿刺增强方法，其特征在于，所述将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合的步骤包括：
    获取穿刺针的针体参数；
    依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
    在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
  4. 根据权利要求2所述的穿刺增强方法，其特征在于，所述后处理包括图像增强、扫描坐标变换、及伪彩。
  5. 一种穿刺增强装置，其特征在于，该穿刺增强装置包括：
    偏转波发射模块，在常规B扫描之外，另发射一帧大角度偏转的超声波；
    穿刺针检测模块，利用超声探头内的磁导航模块检测穿刺针的位置和方向；
    偏转角指定模块，根据检测到的穿刺针的位置和方向，指定下一轮大角度偏转超声波的发射方向；及
    融合模块，将常规B扫描的复合图像帧与大偏转的图像帧在穿刺针及其附近区域进行融合。
  6. 根据权利要求5所述的穿刺增强装置，其特征在于，该穿刺增强装置还包括：
    后处理及显示模块，对融合后的图像帧进行后处理，并成像显示。
  7. 根据权利要求5或6所述的穿刺增强装置，其特征在于，所述融合模块包括：
    检测单元，获取穿刺针的针体参数；
    加权单元，依据所述针体参数，在针体及其附近区域，赋予权重给复合图像帧和大偏转图像帧的对应像素；
    叠加单元，在穿刺针及其附近区域，将复合图像帧和大偏转图像帧的对应像素进行叠加。
  8. 根据权利要求6所述的穿刺增强装置，其特征在于，所述后处理包括图像增强、扫描坐标变换、及伪彩。
  9. 一种穿刺增强系统，其特征在于，包括：
    如权利要求5至8任一项所述的穿刺增强装置；
    穿刺针；
    超声探头，发射和接收超声波；及
    显示器，显示超声波扫描的输出图像。
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