Method for establishing simulated three-dimensional vascular stenosis analysis model

Abstract

The invention discloses a method for establishing a simulated three-dimensional blood vessel stenosis analysis model. The method comprises the following steps: acquiring a bright blood image group and an enhanced black blood image group of a blood vessel part; performing image registration on each bright blood image by using a registration method based on mutual information and an image pyramid by taking the corresponding enhanced black blood image as a reference to obtain a registered bright blood image group; establishing a blood vessel simulation three-dimensional model by using the registered bright blood image group; aiming at each section of blood vessel in the blood vessel simulation three-dimensional model, segmenting from three preset orientations to obtain a two-dimensional section diagram of each orientation; performing corrosion operation on the blood vessel in the two-dimensional section diagram of each orientation, and recording target corrosion times when the blood vessel is corroded to a single pixel; according to the target corrosion times corresponding to the section of blood vessel in the three directions, obtaining a numerical value of a target parameter representing the stenosis degree of the section of blood vessel; and marking the 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 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 blood vessel stenosis analysis model. Background technique [0002] Vascular stenosis refers to the thickening of vessel wall and narrowing of vessel lumen caused by atherosclerosis, trauma or other congenital factors, leading to the symptoms of ischemia in organs or tissues dominated by vessels. Coronary artery stenosis can lead to coronary heart disease; carotid artery stenosis and intracranial artery stenosis can lead to cerebral infarction and cerebral ischemia; lower extremity arterial stenosis can lead to lower extremity arteriosclerosis obliterans, such as ischemic symptoms in the feet. [0003] At present, methods based on lumen imaging are usually used to evaluate the degree of vascular lesions clinically, such as digital subtraction angiography (Digital Subtraction Angiography, DSA), CT angiography (Comp...

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Problems solved by technology

[0004] However, from the images obtained by the above imaging methods, it is impossible to obtain the analysis data on the degree of vascular stenosis intuitively and quickly, which is not conducive to the clinical positioning and analysis of the vascular lesion area.

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