Vascular imaging based calculation method of fractional flow reserve

A technology of fractional blood flow reserve and calculation method, which is applied in the field of fractional blood flow reserve calculation based on vascular images, can solve the problems of not fully respecting the physical model of fluid mechanics, increasing the complexity and time of measurement, and not applying intravascular imaging, etc. Achieve the effect of reducing adverse cardiovascular events, optimizing treatment methods and strategies, and avoiding multiple invasions

Inactive Publication Date: 2021-03-23
成都全景恒升科技有限公司
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Problems solved by technology

For now, its technical barriers mainly lie in the inability to calculate accurate FFR from image data
[0004] The current FFR measurement requires an interventional guide wire to be inserted into the patient's blood vessel, and the microvascular circulation is maximally congested by injecting vasodilator drugs in the patient's body. Increased measurement complexity and time
The currently published methods of measuring FFR through computational methods are mostly based on computational fluid dynamics, which take a long time to calculate and are not real-time; the methods based on non-comp

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  • Vascular imaging based calculation method of fractional flow reserve
  • Vascular imaging based calculation method of fractional flow reserve
  • Vascular imaging based calculation method of fractional flow reserve

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[0049] The technical solution of the present invention will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following description.

[0050] A method for calculating fractional blood flow reserve based on vascular images, the steps of which are as follows:

[0051] Step S1: Acquiring target blood vessel image data;

[0052] Step S2: Obtain the aortic or coronary artery proximal pressure Pa, and the blood flow size Q of the target vessel;

[0053] Step S3: based on the artificial intelligence model 1 and the image data of the target blood vessel, the boundary of the target blood vessel is automatically segmented, and the cross-sectional size and shape of the target blood vessel are obtained;

[0054] Step S4: Based on the artificial intelligence model 2 and the blood vessel boundary information obtained in step S3, the target blood vessel is segmented into several blood vessel se...

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Abstract

The invention relates to a vascular imaging based calculation method of fractional flow reserve. An artificial intelligence model 1 is utilized to automatically divide target blood vessel into multiple blood vessel segments having similar morphological features; the artificial intelligence model is also used to calculate the pressure drop of each blood vessel segments, so that the pressure distribution and FFR of the whole blood vessel can be obtained, and the use of pressure wires and the injection of vasodilators can be avoided; and the evaluation and rehearsal of vascular function recoveryafter virtual interventional surgery (such as stent placing) is performed by utilizing the pressure drop distribution information of the whole blood vessel.

Description

technical field [0001] The invention relates to medical images, in particular to a method for calculating blood flow reserve fraction based on vascular images. Background technique [0002] Myocardial hypoperfusion is an important cause of coronary heart disease. Fractional Flow Reserve (FFR) is defined as the ratio of the maximum blood flow that a diseased vessel can provide to the maximum blood flow that the vessel can provide when it is completely normal. It is one of the most important interventional diagnostic methods for the degree of vascular ischemia. The common measurement method of FFR is to measure the ratio of the distal pressure of the lesion stenosis and the proximal arterial pressure under the state of maximum hyperemia through a pressure-intervening guide wire or a microcatheter. Generally speaking, the distal pressure of vascular lesion stenosis is not only related to the degree of stenosis and lesion, but also related to the more distal capillary microcir...

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Application Information

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IPC IPC(8): A61B5/026
CPCA61B5/026A61B5/0033A61B5/004A61B5/7264
Inventor 于波王钊侯静波贾海波
Owner 成都全景恒升科技有限公司
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