System for simulating computational fractional flow reserve by applying computational fluid mechanics and method thereof

Abstract

The invention provides a system for simulating computational fractional flow reserve by applying computational fluid mechanics and a method thereof. The system comprises a vascular tree model generation module which acquires a medical image, performs segmentation and reconstructs the geometric model of an individual vascular tree; a computational grid generation module which generates a computational grid for the geometric model and establishes the CFD model of the vascular tree; a boundary condition setting module which sets the corresponding entry and exit boundary conditions for the CFD model of the vascular tree; an attribute setting module which sets the physical attributes and the flow equation of the blood; a solver which solves the CFD model of the vascular tree based on the entryand exit boundary conditions and the set physical attributes and the flow equation so as to obtain the fluid parameters of each position of the vascular tree; and a post-processing module which post-processes the fluid parameters so as to obtain the fractional flow reserve, wherein the entry and exit boundary conditions are individual-specific. According to the system and the method, the accuracyof the simulation result can be ensured and the clinically acceptable computational time can be realized.

Description

[0001] This application is a divisional application of a Chinese invention application with an application date of December 28, 2016, application number 201611234903.1, and the title of the invention is "A system and method for simulating and calculating blood flow reserve fraction by applying computational fluid dynamics". technical field [0002] The present invention relates to a system and method for calculation and analysis of human physiology and hemodynamics, more specifically to a system for applying computational fluid dynamics (CFD) to simulate and calculate fractional blood flow reserve, and for computational fluid dynamics (CFD) of vascular trees ( CFD) model to set the corresponding inlet boundary conditions and outlet boundary conditions. Background technique [0003] The main cause of coronary heart disease is coronary artery stenosis caused by arteriosclerosis. Coronary stenosis can cause major changes in coronary blood flow and other hemodynamics, causing re...

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Problems solved by technology

The boundary conditions set based on this assumption or statistics cannot reflect the specificity of individuals, which affects the accuracy of simulation calculations

In addition, in order to automatically and accurately predict the fluid parameters of clinically concerned vascular branches, existing vascular computing systems usually need to perform CFD modeling and calculation of the relevant entire vascular tree (such as the entire vascular tree of the coronary artery), which takes a long time. , and consumes a lot of computing resources, which hinders its clinical promotion

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