Ultrasound elastography system and method, real-time dynamic inter-frame processing method

Abstract

The present application discloses an ultrasonic elastography system and method, and a real-time dynamic inter-frame processing method. The system includes an elastic processing device, which includes: an elastic information detection module for extracting elastic information reflecting the target to be detected; a quality parameter calculation module , used to calculate the quality parameter reflecting the quality of each frame of elastic image corresponding to the elastic information; the frame processing module is used to determine whether to output the elastic image of the corresponding frame according to the quality parameter of each frame of elastic image. While calculating the strain information of each frame, this application also calculates the parameters reflecting the image quality of each frame. According to the parameters, it is determined whether to output the current frame. By not outputting the current frame, the user can be prompted to re-acquire the image due to improper operation, and by outputting the upper The result of one frame is used as the output of the current frame, so as to ensure that the quality of the displayed image meets the preset requirements, and there is no large color change between the successive frames of elastic images obtained due to large differences in stress.

Description

technical field [0001] The present application relates to ultrasound imaging technology, and in particular, to an ultrasound elastography system and method, and a real-time dynamic inter-frame processing method for ultrasound imaging. Background technique [0002] Ultrasound elastography is a commonly used ultrasound imaging technology. Its basic principle is: slightly compress the target tissue with the probe or form a certain pressure on the tissue with the help of the human body's own breathing, blood vessel pulsation and other processes, and obtain two frames of ultrasound before and after compression. Echo signal, when the tissue is compressed, a strain along the compression direction will be generated in the tissue. If the Young's modulus distribution in the tissue is not uniform, the strain distribution in the tissue will also be different; and then some methods are used to detect the tissue strain. The strain information is output to the interface and visually displa...

AI Technical Summary

Problems solved by technology

However, in the same uniform tissue compression and relaxation operation, the stress corresponding to each frame of the elastic image cannot be completely guaranteed to be fixed. When the manipulation of the probe is not well mastered, the stress of each frame will have a large difference

Therefore, the obtained continuous frames of elasticity images (or strain images) have large color changes

In addition, when the stress is too large, the tissue deformation is too large, and the correlation of ultrasonic echo signals before and after compression is weakened, making the calculated strain value inaccurate, or even wrong; when the stress is too small, the tissue deformation is too small, which may be low. Due to the system echo detection accuracy, the image contrast is too poor

Taken together, the elastic image appears to be unstable, making it difficult to judge the degree of softness and hardness clinically.

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