Method for correcting coronary blood vessel models on basis of implicit modeling technologies

Abstract

The invention discloses a method for correcting coronary blood vessel models on the basis of implicit modeling technologies. Virtual stenting includes 1), inputted reconstructed coronary blood vesselmodels; 2), allowing a user to select two end points of a lesion blood vessel section required to be corrected, and acquiring the central axis of the lesion blood vessel section; 3), building tubularmodels according to section information of the central axis, a front end and a rear end; 4), blending the built tubular models F<S> and the original blood vessel models F<O> in a piecewise smooth manner by blending operators. The tubular models built at the step 3) represent virtual stents. Virtual bypass grafting includes 1), inputting the reconstructed coronary blood vessel models; 2), allowingthe user to select two connection points of the lesion blood vessel section required to be subjected to bypass grafting and certain control points so as to determine a central axis path for guiding bypass grafting tubular structures; 3), determining the sizes of the cross sections of the tubular structures and building tubular models according to the central axes of the tubular structures; 4), blending the built tubular models F and the original blood vessel models F<O> in a piecewise smooth manner by smooth piecewise polynomial blending operators. The tubular models built at the step 3) represent virtual bypass grafting.

Description

technical field [0001] The invention relates to the fields of computer medical image processing and geometric modeling and editing, in particular to a method for correcting a coronary vessel model based on implicit modeling technology. Background technique [0002] Coronary artery disease (Coronary Artery Disease, CAD), also known as coronary heart disease, is recognized worldwide as one of the three major diseases that seriously threaten human life and health. Currently, the main operations for the treatment of CAD include coronary interventional surgery (ie, stenting) and coronary artery bypass surgery (ie, virtual bypass grafting, bypass grafting). The main principle of interventional surgery is to replace the vascular model of the lesion with a normal tubular structure so that the blood flow can flow normally. The principle of bypass surgery is to transplant a tubular structure next to the vascular diseased part, and connect the two ends of the normal blood vessel to im...

AI Technical Summary

Problems solved by technology

However, there are still relatively few studies on the editing and reshaping of vascular geometric models to evaluate the effect of surgery

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