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Method and device for adjusting maximum hyperemia state flow rate based on microcirculation resistance index

A technology of blood flow velocity and index, applied in blood flow measurement, image data processing, image enhancement, etc., to achieve the effect of individualized differences

Active Publication Date: 2021-05-25
SUZHOU RAINMED MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a method for adjusting the blood flow velocity in the state of maximum congestion based on the microcirculation resistance index, as well as a device, a coronary artery analysis system and a computer storage medium, so as to solve how to obtain differentiated and highly targeted blood flow according to individual differences. The problem of blood flow velocity in the state of maximal hyperemia

Method used

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  • Method and device for adjusting maximum hyperemia state flow rate based on microcirculation resistance index
  • Method and device for adjusting maximum hyperemia state flow rate based on microcirculation resistance index
  • Method and device for adjusting maximum hyperemia state flow rate based on microcirculation resistance index

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Embodiment 1

[0098] Embodiment 1: In order to solve the above problems, as figure 1 As shown, the present application provides a method for adjusting the blood flow velocity under the maximum congestion state based on the microcirculation resistance index, including:

[0099] S100, according to the blood flow velocity v, aortic pressure waveform, and influencing parameters, obtain the microcirculation resistance index iFMR in diastole;

[0100] S200, if the diastolic microcirculation resistance index iFMR Among them, K is a positive number less than 100;

[0101] S300, according to the formula v'=rv h , to obtain the corrected maximum blood flow velocity in the state of hyperemia;

[0102] Among them, v' represents the corrected maximum blood flow velocity in the state of hyperemia, v h Indicates the blood flow velocity in the state of maximum hyperemia.

[0103] In one embodiment of the present application,

[0104] v h Indicates the blood flow velocity in the state of maximum hyp...

Embodiment 2

[0107] The present application provides a method for adjusting the blood flow velocity in the state of maximum hyperemia based on the microcirculation resistance index, including:

[0108] S100, according to the blood flow velocity v, aortic pressure waveform, and influencing parameters, obtain the diastolic microcirculation resistance index iFMR; wherein

[0109] 1) if figure 2 As shown, when the blood flow velocity is obtained through a two-dimensional contrast image, the methods for obtaining the blood flow velocity v include:

[0110] S110, reading a group of coronary angiography two-dimensional angiography images of at least one body position;

[0111] S120, extracting the vessel segment of interest from the group of coronary angiography two-dimensional angiography images, the specific method is as follows image 3 shown, including:

[0112] S121, selecting N frames of coronary two-dimensional angiography images from the coronary two-dimensional angiography image grou...

Embodiment 3

[0139] In one embodiment of the present application, the method for obtaining the blood flow velocity v through three-dimensional modeling in S100 includes:

[0140] Step A, reading at least two groups of coronary angiography images in two body positions;

[0141] Step B, extracting the vessel segment of interest from the two-dimensional coronary angiography image group;

[0142] Step C, obtaining the geometric structure information of the blood vessel segment, and extracting the center line of the blood vessel segment;

[0143] Step D, performing graphic processing on the vessel segment of interest;

[0144] Step E, extracting the vessel contour of the vessel segment;

[0145]Step F, according to the geometric structure information of the blood vessel segment, project the two-dimensional coronary angiography images of at least two body positions with the centerline and contour line of the blood vessel extracted on a three-dimensional plane to synthesize a three-dimensional ...

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Abstract

The present application provides a method and device for adjusting the blood flow velocity and flow velocity in the state of maximum congestion based on the microcirculation resistance index. The method for adjusting the blood flow velocity in the state of maximum congestion based on the microcirculation resistance index includes: obtaining the diastolic microcirculation resistance index iFMR according to the blood flow velocity v, the aortic pressure waveform, and the influencing parameters; if the diastolic microcirculation resistance If the index iFMR<K, then the adjustment parameter r=1; if the diastolic microcirculation resistance index iFMR≥K, then the adjustment parameter wherein, K is a positive number less than 100. This application obtains the diastolic microcirculation resistance index iFMR according to the influencing parameters; then compares iFMR with K to obtain the adjustment parameters, and then obtains the corrected maximum hyperemia state through the product of the adjustment parameters and the blood flow velocity in the maximum hyperemia state Blood flow velocity, the measurement results are more targeted, individual differences are obvious, and more accurate.

Description

technical field [0001] The present invention relates to the technical field of coronary arteries, in particular to a method for adjusting blood flow velocity in a maximum hyperemia state based on a microcirculation resistance index, a device, 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] Due to the different vital signs of different groups of people, the criteria for judging normal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0275
CPCA61B5/0275G06T7/0016G06T7/11G06T2207/30104G06T2207/30172A61B2034/105A61B5/0033A61B2576/00A61B5/02028A61B5/1072A61B5/489A61B34/10G06T7/13A61B5/026G06T17/00G06T2210/41
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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