Method for establishing intracranial angiography enhanced three-dimensional stenosis analysis model

Abstract

The invention discloses a method for establishing an intracranial angiography enhanced three-dimensional stenosis analysis model. The method comprises the following steps: acquiring a bright blood image group, a black blood image group and an enhanced black blood image group of an intracranial blood vessel part; obtaining a registered bright blood image group by using mutual information based on Gaussian distribution sampling and a registration method of an image pyramid; obtaining an artifact elimination enhanced black blood image group by using the registered bright blood image group; establishing a blood three-dimensional model and a blood vessel three-dimensional model by using the registered bright blood image group; obtaining a contrast enhanced three-dimensional model based on the artifact elimination enhanced black blood image group and the black blood image group; obtaining an angiography enhanced three-dimensional model based on the blood three-dimensional model, the blood vessel three-dimensional model and the angiography enhanced three-dimensional model; and obtaining values of target parameters representing the vascular stenosis degree of each section of blood vessel in the angiography enhanced three-dimensional model, and marking the angiography enhanced three-dimensional model to obtain the intracranial angiography enhanced three-dimensional 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 an intracranial angiography-enhanced three-dimensional stenosis analysis model. Background technique [0002] With the rapid development of my country's national economy, people pay more and more attention to health issues. A paper published by "Lancet" in June 2019 analyzed the causes of death of residents in 34 provinces in China (including Hong Kong, Macao and Taiwan) from 1990 to 2017, and found that the number one cause of death among Chinese was stroke. Stroke is the rupture, stenosis or blockage of intracranial blood vessels that causes brain tissue necrosis, resulting in a series of symptoms, including cerebral hemorrhage, cerebral infarction, etc. If the treatment is not timely, the patient may die; disabled. [0003] At present, methods based on lumen imaging are usually used to evaluate the degree of intracranial vascular lesions ...

AI Technical Summary

Problems solved by technology

However, two-dimensional images have limitations, which is not conducive to obtaining real information of intracranial blood vessels easily and quickly.

Moreover, from the images obtained by the above-mentioned imaging methods, it is impossible to intuitively and quickly obtain 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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