Intracranial blood vessel image registration and fusion method

Abstract

The invention relates to an intracranial blood vessel image registration and fusion method. The method comprises the following steps: acquiring a bright blood image and a black blood image of an intracranial blood vessel; taking the black blood image as a reference image and the bright blood image as a floating image, performing coordinate transformation on the bright blood image, and performing interpolation processing on the bright blood image by adopting a bicubic interpolation method; calculating the similarity between the bright blood image and the black blood image after interpolation processing by using similarity measurement; finding the optimal similarity measurement by using a search strategy, and stopping iteration when the similarity measurement is optimal; according to the space transformation matrix, carrying out coordinate transformation on the bright blood image when similarity measurement is optimal, and obtaining a first registration image; extracting the same scanning area in the black blood image according to the scanning area of the bright blood image to obtain a second registration image; and carrying out image fusion on the two images in the second registration image by adopting a wavelet transform decomposition image fusion algorithm. According to the scheme, a doctor can be assisted in accurate intracranial disease diagnosis.

Description

technical field [0001] The technical field of image processing of the present invention particularly relates to a method for registration and fusion of intracranial blood vessel images. Background technique [0002] With the development of medical imaging technology, a variety of acquisition devices and imaging modes of medical images are emerging, which also brings the need for effective combination of medical images obtained from different medical devices or different acquisition modes of the same medical device. Promote the development of medical image registration and fusion technology. [0003] In particular, the intracranial arteries originate from the carotid and vertebral arteries, which anastomose into the circle of Willis at the base of the brain. The structure is special, the shape is tortuous, and the arterial wall is extremely thin, similar to veins of the same thickness in other parts of the brain; for complex structures Magnetic resonance angiography is usual...

AI Technical Summary

Problems solved by technology

According to the brightness and darkness of the blood in the magnetic resonance image, the scanning sequence can be divided into bright blood sequence and black blood sequence, but the scanning directions of the black blood sequence and the bright blood sequence are different, resulting in different layers of the final magnetic resonance imaging.

Therefore, when doctors observe these two images, they need to carry out necessary spatial imagination to understand, which undoubtedly increases the processing difficulty and processing time, and is not conducive to doctors to obtain comprehensive information needed for diagnosis easily and quickly.

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