Method and device for correcting blood flow characteristic value on basis of plaque location

Abstract

The invention provides a method and device for correcting a blood flow characteristic value on the basis of the plaque location. The method for correcting the blood flow characteristic value on the basis of the plaque location comprises the steps that specific geometrical parameters of an individual coronary system in the region of interest are obtained, and a geometric model and a plaque locationmodel are built; a morphological difference function f(x) in the region of interest is built on the basis of the geometric model; specific blood flow parameters of the individual coronary system in the region of interest are obtained, and by combining the geometric model of an individual in the region of interest, values such as the blood flow speed V, the blood flow pressure Pa, the first pressure difference delta P0, the second pressure difference delta P and the like which reflect blood flow characteristics in the region of interest are obtained. Accordingly, the blood flow characteristicsare corrected on the basis of the plaque locations, by introducing the concept of morphology and combining the influence of plaque position information on the blood characteristic value, the calculation result of the blood flow characteristic value can be corrected, and the accuracy of blood flow characteristic value calculation is improved.

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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