Coronary blood-flow volume and speed acquiring method and device

A technology of blood flow velocity and coronary blood, which is applied in the medical field and can solve problems such as complicated steps

Active Publication Date: 2019-06-21
PULSE MEDICAL IMAGING TECH (SHANGHAI) CO LTD
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AI Technical Summary

Problems solved by technology

Calculating the blood flow of the coronary tree based on non-invasive CT angiography images, the existing method needs to first segment the myocardium based on the CT image, and then estimate the blood flow according to the size of the myocardium. The steps of this method are relatively complicated

Method used

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  • Coronary blood-flow volume and speed acquiring method and device
  • Coronary blood-flow volume and speed acquiring method and device
  • Coronary blood-flow volume and speed acquiring method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7 and comparative example 1-2

[0225] Select coronary artery samples without lesions at the coronary ostium;

[0226] Segment the coronary tree on the left side according to the CT coronary angiography image to obtain the original geometric feature data of the coronary artery, and reconstruct the geometric feature data of the reference lumen of the coronary artery in the non-lesion state by the method from near to far, where r=- 1;

[0227] The calculated reference lumen volume of the left coronary tree is 1100mm 3 ;

[0228] According to formula 1: The blood flow at the coronary ostium was calculated, and the value of K was shown in Table 2.

[0229] The measured area at the opening of the left coronary artery is 11.5mm 2 , according to the formula: blood flow velocity=blood flow / luminal area, the blood flow velocity is calculated.

[0230] Table 1

[0231]

[0232]

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PUM

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Abstract

The invention provides a coronary blood-flow volume acquiring method. The coronary blood-flow volume acquiring method comprises acquiring coronary image information to acquire coronary geometrical characteristic data; according to the coronary geometrical characteristic data, acquiring the total volume V of a coronary reference lumen, and calculating the blood-flow volume Q of an coronary openingaccording to a following formula, wherein, when the unit of Q is mm3/s and that of V is mm3, K ranges between 5 and 9.5. The invention also provides a coronary blood-flow speed acquiring method. According to the coronary blood-flow volume and speed acquiring method, the coronary blood-flow volume and speed can be acquired through the coronary image information; compared with a method for estimating coronary blood-flow volume according to myocardium size in the prior art, the coronary blood-flow volume and speed acquiring method can provide more accurate boundary conditions for image-based hamodynamic calculation.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a method and device for acquiring coronary blood flow and blood flow velocity. Background technique [0002] The World Health Organization report shows that cardiovascular disease has become the first threat to human health. In order to better understand the physiological and pathological behavior of cardiovascular diseases, in-depth study of arterial blood flow becomes the main task of hemodynamics. [0003] Among them, coronary blood flow and blood flow velocity are important parameters for hemodynamic calculations. Currently, methods for calculating coronary blood flow and blood flow velocity are mainly divided into invasive methods and noninvasive methods. [0004] Invasive methods include the TIMI number frame method of coronary angiography. Because coronary angiography can see the information of blood flow changing with time, the current flow can be calculated by the leng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00A61B6/03
Inventor 涂圣贤李泽杭韩静峰李冠宇
Owner PULSE MEDICAL IMAGING TECH (SHANGHAI) CO LTD
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