Method and device for obtaining blood vessel pressure difference

Abstract

The invention provides a method and a device for obtaining blood vessel pressure difference. The method for obtaining the blood vessel pressure difference includes: receiving anatomical data of a part of the blood vessel segment, and obtaining a geometric model of the target blood vessel according to the anatomical data; and obtaining the blood flow model of the target blood vessel and the target blood vessel according to the anatomical data combined with individual data. The blood flow velocity V; the geometric model is preprocessed, the cross-sectional shape model is established, and the shape difference function f(x) of the target blood vessel lumen is calculated, based on the shape difference function f(x) of the target blood vessel lumen and the blood flow velocity V to calculate the pressure difference value ΔP at any two positions of the target blood vessel. The method for obtaining blood vessel pressure difference provided by the present invention clarifies the influence of blood vessel shape and the like on the calculation of blood vessel pressure difference by introducing the concept of morphology, thereby improving the accuracy of calculation of blood vessel pressure difference.

Description

technical field [0001] The invention relates to a method and a device for obtaining blood vessel pressure difference, which belong to the field of medical technology. Background technique [0002] The deposition of lipids and sugars in human blood on the blood vessel wall will form plaques on the blood vessel wall, which in turn will lead to vascular stenosis; especially the vascular stenosis near the coronary artery of the heart will lead to insufficient blood supply to the myocardium and induce coronary heart disease , angina pectoris and other diseases pose a serious threat to human health. According to statistics, there are about 11 million patients with coronary heart disease in my country, and the number of patients treated with cardiovascular interventional surgery is increasing by more than 10% every year. [0003] Although conventional medical detection methods such as coronary angiography and CT can show the severity of coronary artery stenosis, they cannot accura...

AI Technical Summary

Problems solved by technology

In the actual process of blood flow, that is, in the actual calculation process of the blood pressure difference ΔP, factors such as the location, size and type of the lesion will affect the calculation of the blood flow pressure difference ΔP; at the same time, different The medical history information and physiological characteristics of the blood flow pressure will also affect the difference ΔP of blood flow pressure; therefore, in the prior art, the FFR obtained by calculating the difference ΔP of blood flow pressure will deviate from the actual value, resulting in the evaluation of coronary arteries by FFR Inaccurate results for narrow functions

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