Method and device for measuring blood flow rate in relaxing phase, system and storage medium

A technology of blood flow velocity and diastolic period, applied in coronary artery analysis system and computer storage medium, in the field of measuring diastolic blood flow velocity, which can solve the problems of inaccurate diastolic blood flow velocity and so on.

Active Publication Date: 2020-02-14
SUZHOU RAINMED MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method and device for measuring diastolic blood flow velocity, a calculation method for blood vessel evaluation parameters, a coronary ar...

Method used

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  • Method and device for measuring blood flow rate in relaxing phase, system and storage medium
  • Method and device for measuring blood flow rate in relaxing phase, system and storage medium
  • Method and device for measuring blood flow rate in relaxing phase, system and storage medium

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Embodiment 1

[0082] In order to solve the above problems, such as figure 1 As shown, the application provides a method for measuring diastolic blood flow velocity, comprising:

[0083] S100, reading a coronary two-dimensional angiography image group of at least one body position;

[0084] S200, extracting a vessel segment of interest from the coronary two-dimensional angiography image group;

[0085] S300, extracting the centerline of the blood vessel segment;

[0086] S400, making a difference between the time of the contrast agent flowing through the blood vessel segment in any two frames of coronary angiography images, the difference is Δt, and making a difference on the segmental centerline, the difference is ΔL;

[0087] S500, calculating the blood flow velocity according to the ratio of ΔL to Δt;

[0088] S600, selecting the maximum value of the blood flow velocity, which is the blood flow velocity in diastole.

[0089] The present application provides a method for measuring dias...

Embodiment 2

[0091] Such as figure 1 As shown, the application provides a method for measuring diastolic blood flow velocity, comprising:

[0092] S100, reading a group of coronary angiography two-dimensional angiography images of at least one body position, specifically including:

[0093] Directly read the two-dimensional coronary angiography image group of at least one body position from the imaging device or the hospital platform in a wireless or wired manner; or read the two-dimensional coronary angiography image group of at least one body position through a storage device;

[0094] S200, extract the vessel segment of interest from the coronary angiography two-dimensional image group, specifically as figure 2 shown, including:

[0095] S210, selecting N frames of two-dimensional coronary angiography images from the group of two-dimensional coronary angiography images;

[0096] S220, on the two-dimensional coronary angiography image, pick the first and last points of the blood vess...

Embodiment 3

[0119] Such as Figure 7 As shown, the application obtains the centerline length of the blood vessel segment and the blood flow velocity in diastole through three-dimensional modeling, including:

[0120] S100, reading the coronary two-dimensional angiography image group of at least two body positions;

[0121] S200, extracting a vessel segment of interest from the coronary two-dimensional angiography image group;

[0122] S300, extracting the centerline of the blood vessel segment;

[0123] S700, projecting two-dimensional coronary angiography images of at least two body positions on a three-dimensional plane to synthesize a three-dimensional blood vessel model;

[0124] S400, making a difference between the time of the contrast medium flowing through the blood vessel segment in any two frames of coronary angiography images, and the difference is Δt; according to the three-dimensional blood vessel model, the center line of the three-dimensional blood vessel model is obtaine...

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Abstract

The application provides a method and device for measuring blood flow rate in a relaxing phase, a system and a storage medium. The method for measuring blood flow rate in relaxing phase comprises thefollowing steps of accessing a coronary artery two-dimensional contrastographic picture group of one or more body positions; extracting an interested blood vessel section from the coronary artery two-dimensional contrastographic picture group; extracting the center line of the blood vessel section; subtracting time for a contrast medium flowing through the blood vessel section in any two frames ofthe coronary artery two-dimensional contrastographic pictures, wherein the difference is delta t; subtracting the center lines of the section, wherein the difference is delta L; according to the ratio of the delta L to the delta t, solving the blood flow rate; and selecting the maximum value of the blood flow rate, so as to obtain the blood flow rate in the relaxing phase. Through the adoption ofthe method for measuring blood flow rate in relaxing phase disclosed by the invention, measuring by a non-invasive blood pressure instrument is not needed, and by the measuring method, the blood flowrate in the relaxing phase cannot be influenced by external factors including mood and the like, so that the accuracy of measuring the blood flow rate during the relaxing phase is improved.

Description

technical field [0001] The invention relates to the technical field of coronary arteries, in particular to a method and device for measuring diastolic blood flow velocity, a calculation method for blood vessel evaluation parameters, a coronary artery analysis system and a computer storage medium. Background technique [0002] According to the statistics of the World Health Organization, cardiovascular disease has become the "number one killer" of human health. In recent years, the use of hemodynamics to analyze the physiological and pathological behavior of cardiovascular diseases has also become a very important means for the diagnosis of cardiovascular diseases. [0003] Blood flow and flow velocity are very important parameters of hemodynamics. How to measure blood flow and flow velocity accurately and conveniently has become the focus of many researchers. [0004] Vascular evaluation parameters include: coronary artery diastolic blood flow velocity IFR, and coronary art...

Claims

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Application Information

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IPC IPC(8): A61B5/0275
CPCA61B5/0275
Inventor 刘广志龚艳君李建平易铁慈郑博
Owner SUZHOU RAINMED MEDICAL TECH CO LTD
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