Method and device for obtaining vascular pressure difference

Abstract

The invention provides a method and device for obtaining vascular pressure difference. The method comprises steps that anatomical data of a portion of a vessel segment is received, and a geometric model of a target vessel is obtained according to the anatomical data; a blood flow model of the target vessel and the blood flow velocity V of the target vessel are obtained according to the anatomicaldata in combination with individual data; the geometric model is pre-processed to establish a cross section morphological model, a morphological difference function f(x) of a target vessel lumen is calculated, based on the morphological difference function f(x) of the target vessel lumen and the blood flow velocity V, a pressure difference value deltaP at any two positions of the target vessel iscalculated. The method is advantaged in that through introducing the morphology concept, influence of blood vessel morphology and the like on the vascular pressure difference is clarified, and therebycalculation accuracy of the vascular pressure difference is improved.

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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