Method and device for conveniently measuring evaluation parameters of coronary arteries and system

Abstract

The application provides a method and device for conveniently measuring evaluation parameters of coronary arteries and a system. The method comprises: measuring pressure Pd of the narrow distal end ofa coronary artery and / or inlet pressure Pa of the coronary artery through a pressure guide wire; performing coronary angiography on the coronary artery measured; selecting first and second position angiographic images of the coronary artery measured; segmenting a segment of the coronary artery from the proximal end and the distal end, and performing three-dimensional modeling to obtain a coronaryartery three-dimensional vascular model; injecting a contrast medium to obtain average time Ta in which the contrast medium passes from an inlet of the segment to an outlet; acquiring time Tmax in which the contract medium passes from the inlet of the segment to the outlet in maximum expanded state according to a hydromechanics equation; acquiring evaluation parameters of the coronary artery. Modeling can be performed according to angiographic images of any moment in a cardiac cycle; three-dimensional modeling is convenient; injection time of a dilator is shortened; the measuring process is simple; test results are accurate.

Description

technical field [0001] The invention relates to the technical field of coronary artery medicine, in particular to a method, a device, a coronary artery analysis system and a computer storage medium for conveniently measuring coronary artery vessel evaluation parameters. Background technique [0002] The heart is a high energy-consuming organ. Under resting conditions, the oxygen uptake of myocardial metabolism can reach 60% to 80% of the blood oxygen content. Therefore, under stress conditions such as exercise, it is difficult for the heart to meet the increased demand for myocardial hypoxia by increasing the oxygen uptake capacity of the tissue, and most of them ensure the oxygen demand for myocardial metabolism by increasing myocardial blood flow. Myocardial microcirculation accounts for 95% of the composition of coronary circulation, and plays a role in regulating myocardial blood flow through various factors such as local metabolites, endothelium, neuroendocrine, and mu...

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a method, device, coronary artery analysis system and computer storage medium for conveniently measuring coronary artery blood vessel assessment parameters, so as to solve the problem of long-term continuous injection of dilating drugs when measuring CFR and IMR through a pressure guide wire in the prior art. It has a great impact on the patient, causing serious discomfort, and the pressure guide wire measurement process is cumbersome and the measurement results are inaccurate.

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