Method for establishing simulated three-dimensional intracranial vascular stenosis analysis model

Abstract

The invention discloses a method for establishing a simulated three-dimensional intracranial vascular stenosis analysis model. The method comprises the following steps: acquiring a bright blood image group and an enhanced black blood image group of an intracranial vascular part; taking each bright blood image and the corresponding enhanced black blood image as an image pair, and preprocessing each image pair to obtain a first bright blood image and a first black blood image of the image pair; aiming at each first bright blood image, taking the corresponding first black blood image as a reference, and carrying out image registration by utilizing a registration method of mutual information and an image pyramid based on Gaussian distribution sampling to obtain a registered bright blood image group; establishing an intracranial blood vessel simulation three-dimensional model by using the registered bright blood image group; for each section of blood vessel in the intracranial blood vessel simulation three-dimensional model, obtaining a numerical value of a target parameter representing the stenosis degree of the section of blood vessel; and marking the intracranial blood vessel simulation three-dimensional model by using the numerical value of the target parameter of each section of blood vessel to obtain a simulated three-dimensional intracranial blood vessel stenosis analysis model.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method for establishing a simulated three-dimensional intracranial vascular stenosis analysis model. Background technique [0002] Medical data show that China is a high-incidence area of ​​intracranial artery stenosis in the world, and 33% to 50% of strokes and more than 50% of transient ischemic strokes (TIA) have symptomatic intracranial atherosclerotic stenosis (slCAS). ). [0003] At present, methods based on lumen imaging are usually used to evaluate the degree of intracranial vascular lesions and vascular stenosis clinically, such as digital subtraction angiography (Digital Subtraction Angiography, DSA), CT angiography (Computed Tomography Angiography, CTA). ), magnetic resonance angiography (Magnetic Resonance Angiography, MRA) and high-resolution magnetic resonance angiography (High-Resolution Magnetic Resonance Angiography, HRMRA), etc. The intracranial a...

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Problems solved by technology

[0005] However, from the above magnetic resonance images, it is impossible to obtain intuitive and fast analysis data on the degree of intracranial vascular stenosis, which is not conducive to the clinical positioning and analysis of intracranial vascular lesion regions.

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