A method, device, equipment, and storage medium for assessing blood flow reserve fraction

A technology for fractional blood flow reserve and flow, applied in the field of biomedical engineering, can solve problems such as difficulty, high computer performance requirements, and high computational cost, and achieve high accuracy and reliability.

Active Publication Date: 2022-03-11
杭州晟视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is based on CTA and non-invasive CFD multi-scale numerical simulation, its main problems are: (1) the grid steps required for CFD calculation are cumbersome and require a strong professional CFD background, which is difficult; (2) due to the The model is complex and the number of grids is huge. This method is very time-consuming and not suitable for rapid clinical diagnosis; (3) This method requires high computer performance, and generally needs to complete computing tasks on workstations or servers, resulting in high computing costs
This method has a fast calculation speed, but it is only applicable to the linear coronary model at present, and cannot be extended to the real situation

Method used

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  • A method, device, equipment, and storage medium for assessing blood flow reserve fraction
  • A method, device, equipment, and storage medium for assessing blood flow reserve fraction
  • A method, device, equipment, and storage medium for assessing blood flow reserve fraction

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Experimental program
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Effect test

Embodiment 1

[0061] figure 1 It is a schematic flow diagram of the implementation of the method for evaluating the blood flow reserve fraction according to the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0062] Step S101: Determine the distribution of keel nodes of the coronary arteries to be detected.

[0063] Step S102: Analyzing the distribution of the keel nodes to obtain the branch path of the coronary artery to be detected.

[0064] Step S103: Taking the keel node of the coronary artery as a node, divide the coronary artery into a plurality of flow elements, wherein the length of the flow element is the distance between adjacent nodes.

[0065] Step S104: Obtain the pressure loss parameter of the tube flow element according to the flow rate of the branch path of the coronary artery.

[0066] Step S105: Obtain the pressure loss of the pipe flow element and the pressure distribution of the keel node according to the pressure loss parameters...

Embodiment 2

[0105] Based on the same inventive concept as the foregoing embodiments, this embodiment describes the technical solutions of the foregoing embodiments through specific examples.

[0106] see figure 2 , figure 2 It is a schematic flow diagram of the implementation of the method for evaluating the blood flow reserve fraction according to the embodiment of the present invention, such as figure 2 shown, including:

[0107] Step S201: Establishing a three-dimensional image model of the coronary artery according to the CTA image data of the coronary artery in a state of hyperemia.

[0108] It should be noted that, in actual implementation, when the myocardial microcirculation of the patient's coronary artery is completely congested, computerized tomography CT equipment is used to perform angiography on the patient's heart vessel site to obtain CTA image data of the coronary artery; For the CTA image data of the artery, a three-dimensional image model of the coronary artery is...

Embodiment 3

[0153] Based on the same inventive concept as the foregoing embodiments, this embodiment describes the technical solutions of the foregoing embodiments through specific examples, specifically including:

[0154] The patient needs to use computed tomography CT equipment to perform angiography on the patient's heart vessels under the condition that the myocardial microcirculation of the coronary artery is completely congested, and obtain the CTA image data of the coronary artery; and then establish the coronary artery according to the CTA image data of the coronary artery. 3D image model. Exemplarily,

[0155] Figure 4 It is a schematic diagram of a reconstructed three-dimensional coronary artery model according to the embodiment of the present invention. The three-dimensional image model of the coronary arteries includes multiple main branches of the coronary arteries and part of the ascending aorta. ) artery, right coronary artery (RCA, Right Coronary Artery) and left coro...

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Abstract

The embodiment of the present invention discloses a method, device, device, and storage medium for evaluating blood flow reserve fraction. The method includes: determining the keel node distribution of the coronary artery to be detected; analyzing the keel node distribution to obtain the coronary artery to be detected The branch path of the artery; taking the keel node of the coronary artery as a node, dividing the coronary artery into a plurality of flow elements, wherein the length of the flow element is the distance between adjacent nodes; according to the coronary artery According to the flow rate of the branch path of the pipe flow element, the pressure loss parameter of the pipe flow element is obtained; according to the pressure loss parameter of the pipe flow element and the preset equivalent calculation strategy, the pressure loss of the pipe flow element and the pressure loss of the keel node are obtained Pressure distribution: According to the pressure distribution of the keel node, the blood flow reserve fraction of the coronary artery is obtained.

Description

technical field [0001] The invention relates to biomedical engineering technology, in particular to a method, device, equipment and storage medium for evaluating blood flow reserve fraction. Background technique [0002] Cardiovascular disease is a leading cause of disability and premature death worldwide. Coronary artery disease (CAD, coronary artery disease) is the most common type of cardiovascular disease. Insufficient coronary artery blood supply can cause myocardial ischemia, which can lead to angina pectoris and even myocardial infarction. Coronary CT angiography (CTA) and coronary angiography (CAG, Coronary angiography) are often used clinically to diagnose coronary heart disease, both of which confirm the degree of coronary stenosis by angiography, thereby inferring myocardial ischemic lesions. It turns out that there is no necessary link between stenosis and ischemic heart disease and myocardial infarction. Fractional Flow Reserve (FFR, Fractional Flow Reserve) h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/026
CPCA61B5/026
Inventor 魏润杰王洪平高琪吴鹏
Owner 杭州晟视科技有限公司
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