Intracavitary image-based method, device and system for calculating fractional flow reserve (FFR) and computer storage medium

Abstract

The application relates to an intracavitary image-based method, device and system for calculating a fractional flow reserve (FFR) and a computer storage medium. The method for acquiring the fractionalflow reserve comprises the steps of: S1, acquiring image data related to a coronary artery blood vessel, and building a corresponding 3D vessel model by processing the image data, wherein the image data related to the coronary artery blood vessel includes intracavitary image data and coronary angiography image data; S2, calculating a blood flow equation according to the 3D vessel model and a fluid dynamics approach so as to obtain distribution of hemodynamic parameters of coronary arteries of a region expressed by the 3D vessel model; and S3, performing calculation according to the hemodynamic parameters acquired in the step S2 to obtain the fractional flow reserve. The method, the device and the system can acquire the FFR of coronary arteries of a patient by accurate calculation.

Description

technical field [0001] The present application relates to the technical field of data processing of medical images, in particular to a method, device, system and computer storage medium for calculating blood flow reserve fraction based on intracavity images. Background technique [0002] Coronary angiography was once considered the "gold standard" for the diagnosis of coronary heart disease, but it can only qualitatively evaluate the degree of lesion stenosis, but cannot quantitatively evaluate the impact of lesion stenosis on coronary physiological function, so it may overestimate or underestimate the lesion The severity of the disease leads to undertreatment of lesions that require treatment or overtreatment of lesions that do not require treatment. In 1993, NicoPijls et al. proposed a new index of calculating coronary blood flow through pressure measurement—Fractional Flow Reserve (FFR). After long-term basic and clinical research, FFR has become a recognized index for f...

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Problems solved by technology

[0005] Although intravascular imaging (IVUS / OCT) can effectively obtain information on vascular stenosis, intravascular ultrasonography (IVUS) and optical coherence tomography (OCT) do not have the function of measuring blood flow reserve fraction, and cannot judge whether the coronary artery exists or not. functional stenosis

If the doctor needs to measure the blood flow reserve fraction, he also needs to use an invasive pressure guide wire, and at the same time, measure it under the condition induced by intravenous administration of adenosine (the coronary artery is in the state of maximum congestion), which increases the complexity of the operation and will harm the patient. Incurring increased risk and additional costs

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