Calculation method and device for obtaining blood flow characteristic value based on blood pressure correction

Abstract

The invention provides a calculation method and device for obtaining blood flow characteristic values ​​based on blood pressure correction. The calculation method for obtaining blood flow characteristic values ​​based on blood pressure correction includes: obtaining specific geometric parameters of the individual coronary system in the region of interest and establishing a geometric model; establishing a morphological difference function f(x) of the region of interest based on the geometric model ; Obtain the specific blood flow parameters of the individual coronary system in the region of interest, and combine the geometric model of the individual in the region of interest to obtain the second blood flow pressure Pa and the shape difference function f(x) at the proximal end of the region of interest Values ​​that reflect blood flow characteristics such as the pressure difference value ΔP. The calculation method and device for obtaining blood flow characteristic values ​​based on blood pressure correction provided by the present invention, by introducing the concept of morphology and combining the influence of blood pressure information on blood flow characteristic values, can correct the calculation results of blood flow characteristic values ​​and improve Accuracy of blood flow eigenvalue calculation.

Description

technical field [0001] The invention relates to a calculation method and device for obtaining blood flow characteristic values ​​based on blood pressure correction, and belongs 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] Conventional medical detection methods such as coronary angiography (CAG) and computed tomography (CT) can ...

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, when When an individual has abnormal blood pressure, the abnormal blood pressure change will lead to the blood flow pressure P at the proximal end point in the blood vessel a changes; therefore, in the prior art, through the blood flow pressure P a The FFR obtained by calculating the difference ΔP with the blood flow pressure may deviate from the actual value, resulting in errors in the results of evaluating coronary stenosis function by FFR

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