Blood vessel image flow void artifact elimination method

Abstract

The invention discloses a blood vessel image flow void artifact elimination method. The method comprises the steps of acquiring a bright blood image and an enhanced black blood image of a blood vesselpart; performing image registration on the bright blood image by taking the enhanced black blood image as a reference to obtain a registered bright blood image and a registered enhanced black blood image; improving the contrast of the registered bright blood image to obtain a contrast-enhanced bright blood image; extracting blood information from the contrast-enhanced bright blood image to obtaina bright blood feature map; and performing image fusion on the bright blood feature map and the registered enhanced black blood image according to a preset fusion formula to obtain a target enhancedblack blood image of which the flow void artifact is eliminated. According to the invention, an image registration technology is utilized to extract blood information from a registered bright blood image and fuse the blood information into a registered enhanced black blood image so as to eliminate flow void artifacts. According to the method, the flow void artifacts are eliminated from the perspective of image processing, a new imaging technology, mode or pulse sequence is not needed, the flow void artifacts can be simply, conveniently, accurately and rapidly eliminated, and good clinical popularization is achieved.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method for eliminating flow void artifacts in blood vessel images. Background technique [0002] According to the latest medical data, vascular diseases have seriously affected the life and health of contemporary people and become one of the diseases with a high mortality rate. Such as atherosclerosis, inflammatory vascular disease, vascular true neoplastic disease and so on. The common causes of vascular diseases are narrowing, blockage, rupture, and plaque in blood vessels. Clinically, magnetic resonance angiography (Magnetic Resonance Angiography, MRA) and high-resolution magnetic resonance angiography (High-resolution Magnetic Resonance Angiography, HRMRA) are generally used to detect the vessel wall and the degree of stenosis of the vessel, so as to provide doctors with diagnostic information. information required. [0003] The bright blood sequence in magnet...

AI Technical Summary

Problems solved by technology

Flow void artifacts will lead to poor description of blood vessels and surrounding tissues in black blood images, and will simulate wall thickening or plaque appearance of normal individuals, thereby affecting doctors' diagnosis and making blood vessel analysis extremely difficult

[0004] The current flow-space artifact elimination methods focus on improving medical image imaging technology, such as the adoption of new imaging principles, new pulse sequences, and research and development of new imaging modes, etc., but these methods are complex to implement and difficult to promote in clinical applications. Accurate and fast removal of flow void artifacts is not possible with devices without these pulse sequences or imaging modes

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