Inhibition method for motion artifact in colored blood flow imaging and equipment

Abstract

The embodiment of the invention provides an inhibition method for a motion artifact in colored blood flow imaging and equipment. The method comprises the steps that the blood flow speed and a corresponding grayscale image in colored blood flow imaging are acquired, the blood flow speed, smaller than a flow speed threshold value, of the blood flow speed is removed, the blood flow speed after processing is obtained, and at the same position of colored blood flow imaging, if the blood flow speed of multiple frames of images before the moment of colored blood flow imaging is zero, or the blood flow speed of only frame of image is not zero, and / or a grayscale value of the corresponding grayscale image is larger than or equal to a grayscale histogram mean value, the blood flow speed after processing is determined as the motion artifact; the motion artifact is removed, and the true blood flow speed is obtained. The inhibition method for the motion artifact in colored blood flow imaging and the equipment can have the advantage that the motion artifact in colored blood flow imaging can be inhibited.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of ultrasound imaging, and in particular to a method and device for suppressing motion artifacts in color blood flow imaging. Background technique [0002] In 1842, the Austrian physicist Doppler first proposed a physical phenomenon, that is, when there is motion between the vibration source and the receiver, the frequency of the received vibration changes due to the motion. The ultrasonic probe used in ultrasonic examination is the vibration source, and the heart and blood flow of the person being examined are the receiver. There is a change in the vibration frequency between the two, which is called the "Doppler" effect. On this basis, scientists use pulse Doppler technology as the basis, and use technologies such as moving target detection (MTI), autocorrelation function calculation, digital scan conversion and color coding to obtain color imaging of blood flow, so it is called Colo...

AI Technical Summary

Problems solved by technology

Regarding the removal of the second signal, clutter filtering, many people have done research in this area before and achieved certain results, but it is difficult to completely remove the third signal

In addition, adjusting a higher speed scale will also have a certain inhibitory effect on motion artifacts, but at the same time it will also remove some low-speed blood flow signals

There are not many studies on motion artifacts, most of which start with grayscale images, blood flow, energy, variance, etc., which are more complicated to deal with

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