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Method and device for adjusting blood flow rate under largest congestion state based on microcirculation drag index

A technology of blood flow velocity and index, which is used in blood flow measurement, image data processing, image enhancement, etc.

Active Publication Date: 2020-02-14
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 blood flow rate under largest congestion state based on microcirculation drag index
  • Method and device for adjusting blood flow rate under largest congestion state based on microcirculation drag index
  • Method and device for adjusting blood flow rate under largest congestion state based on microcirculation drag 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 blood flow velocity v, aortic pressure waveform, and physiological parameters, obtain diastolic microcirculation resistance index iFMR;

[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 hyperemia, ...

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 blood flow velocity v, aortic pressure waveform, and physiological parameters, obtain 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 group;

...

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 b...

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Abstract

The application provides a method and device for adjusting blood flow rate under the largest congestion state based on a microcirculation drag index. The method for adjusting the blood flow rate underthe largest congestion state based on the microcirculation drag index comprises the following steps of according to the blood flow rate v, an aortic pressure wave form and physiological parameters, obtaining a microcirculation drag index iFMR in a diastolic phase; if the microcirculation drag index iFMR in the diastolic phase is less than K, then enabling an adjusting parameter r to be 1; and ifthe microcirculation drag index iFMR in the diastolic phase is larger than or equal to K, enabling an adjusting parameter r to be shown as the description, wherein K is a positive number less than 100. For the method disclosed by the invention, according to the physiological parameters, the microcirculation drag index iFMR in the diastolic phase is obtained, then iFMR is compared with K to obtainthe adjusting parameter, and then through the product of the adjusting parameter and the blood flow rate under the largest congestion state, the amended blood flow rate under the largest congestion state is obtained, so that the measuring result is more pointed, the individualization difference is obvious, and the method is 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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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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