Recursion modelling method of human coronary artery

Abstract

A recursion modelling method of human coronary artery belongs to the cross field of digital image process and medical imaging. The invention, based on the static model of the heart and the coronary artery constructed by the heart section picture firstly, considers the normal and tangential movement of the heart to built their movement model, and then compares the difference between the individual three-dimensional coronary artery tree and the coronary artery model reconstructed by the actual single arm X-ray angiogram image data, if the topological difference is relative big, a new specific coronary artery model is constructed, contrarily, both of them are melted to obtain a general coronary artery model. The invention can update the model constantly by the recursion, so as to obtain a coronary artery model closer to the actual human physiology and other specific coronary artery model, thus providing objective instruction and reference for clinical treatment or research.

Description

technical field [0001] The invention belongs to the intersection field of digital image processing and medical imaging, and in particular relates to a recursive modeling method of human coronary arteries. Background technique [0002] At home and abroad, the human cardiovascular modeling is not very deep. The most commonly used coronary artery model is the three-dimensional structure of the coronary artery reconstructed by Dodge based on the angiographic images of many patients, and a common coronary artery vessel is established. Model. However, it is a static model, and only considers the commonality of coronary arteries of different individuals, and cannot express the specificity of individuals. As for dynamic coronary artery modeling, the establishment of the model is not clearly emphasized. It mainly extracts the movement information of blood vessels from the sequence of medical images (such as X-ray contrast images), and then uses this information as the variable model...

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Problems solved by technology

However, when establishing the dynamic model of the heart, only the normal movement of the chamber surface is considered, and the tangential movement is not considered, which leads to the same movement information in the three-dimensional dynamic model of the coronary artery established on the basis of the dynamic heart model. Inaccurate defects, which in turn affect the effect of three-dimensional reconstruction of angiography

In addition, the difference criterion in the update part of the coronary artery model only uses the average distance between the corresponding blood vessels between individuals, but does not combine the distribution of individuals in the physiological coordinate system, so, in some cases, does not does not accurately reflect actual differences

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