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Blood flow reserve fraction determination system, method, terminal and storage medium

A technology of fractional blood flow reserve and blood flow, applied in the field of biomedical engineering, can solve the problems of blood flow field prediction results error, inaccurate FFR results, etc.

Active Publication Date: 2022-02-01
杭州晟视科技有限公司
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Problems solved by technology

The current mainstream FFR technology regards blood as a Newtonian fluid with a constant viscosity, which leads to large errors in the prediction results of the blood flow field, which in turn leads to inaccurate FFR results

Method used

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  • Blood flow reserve fraction determination system, method, terminal and storage medium
  • Blood flow reserve fraction determination system, method, terminal and storage medium
  • Blood flow reserve fraction determination system, method, terminal and storage medium

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Embodiment Construction

[0086] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the specific technical solutions of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0087] It should be noted here that the fractional flow reserve FFR determination system provided by the embodiment of the present invention can be applied to the determination of coronary dynamic FFR, wherein the left and right coronary arteries of the coronary arteries are taken as an example for illustration, and the coronary arteries start from the aorta The root sends out and surrounds the whole heart, mainly divided into two branches, the right coronary artery and the left coronary artery. The right coronary artery consists of a main trunk and ...

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Abstract

The embodiment of the present invention discloses a system, method, terminal and storage medium for determining FFR. The system includes: an acquisition module for acquiring the relationship between blood detection information and blood flow model parameters; an image processing module for acquiring image data of an individual heart , to separate the three-dimensional image data of myocardium and coronary arteries; the impedance calculation module is used to calculate the coronary artery outlet impedance; the viscosity coefficient calculation module is used to obtain individual blood test information, according to the hematocrit and blood The relationship between the detection information and the parameters of the blood flow model is used to calculate the viscosity coefficient; the blood flow parameter calculation module is used to divide the grid data according to the boundary conditions, the blood density and viscosity coefficient in the blood detection information, and the three-dimensional image data of the coronary artery, The blood flow parameter information of the coronary artery is obtained; the FFR determination module is configured to determine the coronary FFR according to the relationship between the second set pressure and the blood flow parameter information.

Description

technical field [0001] The present invention relates to biomedical engineering, in particular to a blood flow reserve fraction determination system, method, terminal and computer storage medium. Background technique [0002] Coronary angiography (CAG) and coronary non-invasive angiography (CT angiography, CTA) imaging have been used to evaluate the degree of coronary artery stenosis. However, studies have shown how much arterial stenosis affects distal blood flow. However, the impact is unknown. Fractional flow reserve (FFR) has now become a recognized index for functional evaluation of coronary artery stenosis. Its most important function is to accurately evaluate the functional consequences of an unknown coronary artery stenosis. [0003] FFR refers to the ratio of the maximum blood flow that can be obtained by the blood vessel in the presence of stenosis in the state of maximum congestion of the coronary microcirculation to the maximum blood flow that the blood vessel can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/026A61B5/02
CPCA61B5/02007A61B5/02028A61B5/026
Inventor 魏润杰吴鹏刘星利高琪
Owner 杭州晟视科技有限公司
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