Method for establishing enhanced three-dimensional model for intracranial angiography

Abstract

The invention discloses a method for establishing an enhanced three-dimensional model for intracranial angiography. 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; preprocessing each image pair to obtain a first bright blood image and a first black blood image; for each first bright blood image, taking the corresponding first black blood image as a reference, and performing image registration by using mutual information based on Gaussian distribution sampling and a registration method of an image pyramid to obtain a registered bright blood image group; carrying out flow empty artifact elimination operation to obtain an artifact elimination enhanced black blood image group; subtracting corresponding images in the artifact elimination enhanced black blood image group and the black blood image group to obtain K contrast enhanced images; establishing a blood three-dimensional model and a blood vessel three-dimensional model of blood boundary expansion by using the registered bright blood image group; establishing a contrast enhancement three-dimensional model by utilizing the K contrast enhancement images; obtaining an intracranial 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.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method for establishing an enhanced three-dimensional model of intracranial angiography. 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 and vascular st...

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Problems solved by technology

However, two-dimensional images have limitations, which is not conducive ...

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