Intracranial blood vessel image registration method

Abstract

The invention discloses an intracranial blood vessel image registration method which comprises the steps of acquiring a plurality of image pairs to be registered of intracranial blood vessels, whereineach image pair comprises a bright blood image and an enhanced black blood image; preprocessing the bright blood image and the enhanced black blood image in each image pair to obtain a first bright blood image and a first black blood image of the image pair; selecting a part of preprocessed image pairs as test image pairs; performing image registration on the first bright blood image and the first black blood image in each test image pair by adopting a registration method based on mutual information and an image pyramid to obtain a rotation matrix corresponding to the first bright blood imagein the test image pair after registration; obtaining the mean value of the rotation matrixes of all the test image pairs; and performing coordinate transformation on the first bright blood images inother preprocessed image pairs except the test image pair by using the mean value of the rotation matrix to complete image registration. The method provided by the invention can improve the registration precision and registration speed of the intracranial blood vessel image.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to an intracranial blood vessel image registration method. Background technique [0002] In June 2019, a paper published in The Lancet analyzed the causes of death of residents in 34 provinces in China in the past three decades. The study found that the top cause of death among Chinese was stroke. Stroke, also known as cerebral apoplexy, is an infarct disease caused by blockage or rupture of intracranial blood vessels, affecting the normal blood flow, such as cerebral hemorrhage, cerebral infarction, etc. If the treatment is not timely, the patient is likely to die; Timely treatment can also lead to disability. [0003] At present, the clinical evaluation of the degree of intracranial vascular lesions and the degree of vascular stenosis usually uses methods based on lumen imaging, such as Digital Subtraction Angiography (DSA), Computed Tomography Angiography (CTA) ), M...

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Problems solved by technology

[0005] However, the scanning directions of the black blood sequence and the bright blood sequence are different, resulting in different layers of the final MRI

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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