Method and device for ultrasonic image space compound imaging

Abstract

The invention discloses a method and a device for ultrasonic image space compound imaging. The method comprises the following steps of: receiving ultrasonic echo signals with different deflection angles; performing image space compound imaging for the ultrasonic echo signals with different deflection angles; calculating the variance of the image data after the present compound imaging with the image data after the previous compound imaging, and then getting the absolute value, so as to obtain the variance image data, comparing the variance image data with a preset variance threshold, and judging whether the image data with a high motion attribute exists in the image data after the present compound imaging; and determining the output mode of the image data according to whether the image data with a high motion attribute exists in the image data after the present compound imaging. In the technical scheme of the invention, different image processing modes can be chosen according to the judged image motion attribute by judging the image data with a high motion attribute; and speckle noise, sound shadow and reverberation in an ultrasonic image can be effectively reduced, thus improving the definition of the image.

Description

technical field [0001] The invention relates to a compound imaging method and device, in particular to a space compound imaging method and device for ultrasonic images. Background technique [0002] With the continuous development of science and technology, ultrasonic scanning diagnostic systems have been more and more widely used in medicine, and the application of spatial composite imaging technology can obtain ultrasonic echo information from different angles, thereby improving the image's edge detail performance and contrast. It also has a good effect on reducing speckle noise, sound shadow, reverberation, etc. in ultrasound images. [0003] In the prior art, the patent publication number is: the Chinese patent of CN102038519A, which discloses a spatial compound imaging method for ultrasonic diagnosis. The patent specifically uses the window function for the beam signals of the transmitting and receiving channels in ultrasonic scanning in N different directions. process...

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Problems solved by technology

[0003] In the prior art, the patent publication number is: the Chinese patent of CN102038519A, which discloses a spatial composite imaging method for ultrasonic diagnosis. In the directional ultrasonic scanning, the beam signals of the transmitting and receiving channels are respectively processed by the window function, and then the obtained N original ultrasonic image data in different directions are processed by the histogram equalization algorithm or matching algorithm, and then the processed ultrasonic image data is processed. Spatial compound imaging to obtain the final ultrasound image; however, this method of spatial compound imaging is not suitable when the frame rate of ultrasonic scanning is low and the movement speed of human tissue is fast (that is, the motion property is high)

When performing spatial composite imaging on ultrasonic images, it is often required to scan human tissues through different scanning angles, and the actual positions of human tissues in each image obtained are the same or very similar, so that spatial composite imaging of ultrasonic images will be meaningful; Otherwise, after compositing the images of different scanning angles, the obtained composite image will become blurred and the resolution will be reduced; in the actual composite imaging application of ultrasound images, there are often high-speed moving tissues in the same scanning image and low-velocity moving tissues, that is, tissues with high motion attributes and tissues with low motion attributes, for example, heart tissue is a tissue with high motion attributes, and muscle tissue is a tissue with low motion attributes; The resolution of the high-speed moving tissue area will decrease, and the image will become blurred, which will affect the clarity of the image, and eventually lead to a greater possibility of doctor's misdiagnosis due to unclear ultrasound images, resulting in unnecessary troubles

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