Method and device for detecting coronary artery stenosis functional ischemia based on FFR

A technology for coronary artery stenosis and coronary arteries, applied in the medical field, can solve problems such as time-consuming, inability to reflect the specificity of coronary artery blood vessels, reduce the accuracy of functional detection of coronary artery stenosis and the length of detection time, and achieve the goal of promoting popularization and application Effect

Active Publication Date: 2020-03-27
唯智医疗科技佛山有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this method is to measure the virtual aortic root mean pressure and coronary artery stenosis distal pressure in the state of drug-induced hyperemia, it cannot reflect the specificity of each blood vessel contained in the coronary artery, resulting in the fractional flow...

Method used

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  • Method and device for detecting coronary artery stenosis functional ischemia based on FFR
  • Method and device for detecting coronary artery stenosis functional ischemia based on FFR
  • Method and device for detecting coronary artery stenosis functional ischemia based on FFR

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Embodiment 1

[0033] see figure 1 , figure 1 It is a schematic flowchart of a method for detecting functional ischemia of coronary artery stenosis based on FFR disclosed in the embodiment of the present invention. in, figure 1 The described method for detecting functional ischemia of coronary artery stenosis based on FFR can be applied to all medical devices capable of detecting the functionality of coronary artery stenosis, which is not limited in the embodiments of the present invention. Such as figure 1 As shown, the FFR-based detection method for coronary artery stenosis functional ischemia may include the following operations:

[0034]101. After constructing the three-dimensional structure of the coronary artery that matches the coronary artery, the medical device determines the characteristic parameters corresponding to each sub-virtual coronary artery in the virtual coronary artery based on the three-dimensional structure of the coronary artery. The three-dimensional structure of ...

Embodiment 2

[0136] see figure 2 , figure 2 It is a schematic flowchart of another method for detecting functional ischemia of coronary artery stenosis based on FFR disclosed in the embodiment of the present invention. in, figure 2 The described method for detecting functional ischemia of coronary artery stenosis based on FFR can be applied to all medical devices capable of detecting the functionality of coronary artery stenosis, which is not limited in the embodiments of the present invention. Such as figure 2 As shown, the FFR-based detection method for coronary artery stenosis functional ischemia may include the following operations:

[0137] 201. After acquiring the centerline set of coronary arteries, the medical device constructs several virtual blood vessel cross sections of each centerline in the centerline set.

[0138] In the embodiment of the present invention, the centerline set of coronary arteries includes a plurality of centerlines, wherein each centerline has a corr...

Embodiment 3

[0188] see image 3 , image 3 It is a structural schematic diagram of an FFR-based detection device for coronary artery stenosis and functional ischemia disclosed in an embodiment of the present invention. in, image 3 The described device for detecting functional ischemia of coronary artery stenosis based on FFR can be applied to all medical devices capable of detecting the functionality of coronary artery stenosis, which is not limited in the embodiments of the present invention. Such as image 3 As shown, the device for detecting functional ischemia of coronary stenosis based on FFR may include a first determination module 301, a second determination module 302, a third determination module 303, a calculation module 304 and an analysis module 305, wherein:

[0189] The first determining module 301 is configured to determine the characteristic parameters corresponding to each sub-virtual coronary artery in the virtual coronary artery based on the three-dimensional struct...

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Abstract

The invention discloses a method and device for detecting coronary artery stenosis functional ischemia based on FFR. The method comprises the following steps: constructing a three-dimensional structure of coronary artery, and determining the characteristic parameter corresponding to each sub-virtual coronary artery in a virtual coronary artery; determining a pressure difference between the inlet pressure of the sub-virtual coronary artery and the outlet pressure of the sub-virtual coronary artery under a congestion state based on the characteristic parameter, and determining the congestion average pressure of a virtual aorta corresponding to the virtual coronary artery under the congestion state; and calculating the fractional flow reserve of the sub-virtual coronary artery based on the pressure difference of each sub-virtual coronary artery and the congestion average pressure of the virtual aorta, and analyzing functional ischemia caused by the sub-virtual coronary artery stenosis based on the fractional flow reserve of each sub-virtual coronary artery. Visibly, implementation of the method can improve the determination accuracy of the fractional flow reserve (FFR) and reduce thedetermination duration so as to improve the detection accuracy and reduce the detection duration for functional ischemia caused by coronary artery stenosis.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a method and device for detecting functional ischemia of coronary artery stenosis based on FFR. Background technique [0002] Coronary artery disease is a disease with a high incidence rate, which has become one of the key threats to people's health, and with the changes in people's diet, work and rest lifestyles, the age of onset of coronary artery disease tends to be younger, therefore, coronary artery disease The prevention and treatment of diseases is urgent. Currently, methods for evaluating coronary artery disease include coronary angiography, intravascular ultrasound, and Fractional Flow Reserve (FFR). Among them, fractional flow reserve (FFR) is currently the main method for quantifying and evaluating the function of coronary arteries, and is the gold standard for functional evaluation of coronary artery stenosis. [0003] It has been found in practice that the current...

Claims

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Application Information

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IPC IPC(8): A61B5/026A61B5/02G16H50/70G16H50/30G16H50/50
CPCA61B5/0261A61B5/02007A61B5/725G16H50/70G16H50/30G16H50/50
Inventor 区初斌钱逸李洲健
Owner 唯智医疗科技佛山有限公司
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