Supersonic movement detection method coding using reversing Golay dode

Abstract

This invention is a kind of ultrasonic movement test method which uses the reverse Golay code coding, uses the method that two coding module process two data path separately, when decoding the receiver signal of the receiver circuit, uses the original orthogonal Golay code module decode the first data path and superimpose it by the superimposed module; uses the reverse Golay code module decode the second data path and superimpose it by the superimposed module; at last processes the result of the first and second data path by bucking module, does a proper delay to the superimposed result of the second data path by delay module. The first data path in this invention can improve SNR and enhance the force of penetration, and at the same time remove the pseudo-image; the second data path will detect and enhance the movement display in B image, the enhanced area covered by a clean static image.

Description

technical field [0001] The invention relates to ultrasonic signal processing and ultrasonic coding excitation technology, in particular to an ultrasonic motion detection method using reverse Golay code decoding. Background technique [0002] As we all know, there is a compromise between resolution and penetration in ultrasound imaging, and there are two ways to increase the penetration of the system: (1) Increase the amplitude of emitted ultrasound. (2) Increase the duration of emitting ultrasonic waves. However, the amplitude of the sound wave cannot be increased indefinitely. In the current ultrasonic system, it is very close to M. The only feasible way is to increase the duration of the ultrasonic wave, but simply increasing the length of the pulse will reduce the axial resolution of the system. , resulting in blurred images. At present, the coding excitation technology can solve this problem very well. The coding excitation technology has been successfully applied in r...

AI Technical Summary

Problems solved by technology

[0025] (1) The movement of tissue or blood flow between two launches will seriously affect its performance, making it often less than ideal

[0026] (2) The use of Golay codes will reduce the frame rate of the image by half

According to our analysis, the method of only using staggered shots will still produce serious artifacts

At the same time, in the effective range of clinical blood flow motion, the false signal may be larger than the actual signal

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