Method and device for correcting blood flow characteristic value based on plaque position

Abstract

The invention provides a method and a device for correcting blood flow characteristic values ​​based on plaque positions. The method for modifying the characteristic value of blood flow based on the plaque position includes: obtaining specific geometric parameters of the individual coronary system in the region of interest and establishing a geometric model and a plaque position model; establishing a morphological difference of the region of interest based on the geometric model Function f(x); 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 blood flow velocity V, blood flow pressure Pa, and first pressure of the region of interest Difference ΔP 0 and the second pressure difference ΔP and other values ​​that reflect the characteristics of blood flow. The blood flow characteristic correction based on the plaque position provided by the present invention can correct the calculation result of the blood flow characteristic value by introducing the concept of morphology and combining the influence of the plaque position information on the blood flow characteristic value, and improve the blood flow characteristic. Accuracy of value calculations.

Description

technical field [0001] The invention relates to a method and a device for correcting a blood flow characteristic value based on a plaque position, 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 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 show the severity of coronary art...

AI Technical Summary

Problems solved by technology

In the actual process of blood flow, that is, the actual calculation process of the blood pressure difference ΔP, factors such as the location, size and type of the lesion in the blood vessel will affect the calculation of the blood flow pressure difference ΔP; At the same time, when the position of the blood vessel segment where the individual lesion exists is different, it will also affect the calculation of the difference ΔP of the blood flow pressure; therefore, in the prior art, the blood flow pressure P a The characteristic value of blood flow calculated by the difference ΔP from the blood flow pressure will deviate from the actual value, resulting in errors in the evaluation of individual cardiovascular function by the characteristic value of blood flow

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