Method and device for acquiring pressure difference based on smoking history information

Abstract

The invention provides a method for acquiring pressure difference based on smoking history information. The method includes the steps: receiving anatomic data and a geometric model of part of blood vessel sections; acquiring the blood flow velocity V of a blood flow model of an area-of-interest according to the anatomic data and individual specificity data; building a morphological model of the cross section of each position between a near-end terminal point and a far-end terminal point of a target blood vessel; calculating a morphological difference function f(x) of a lumen of the target blood vessel; calculating a first pressure difference delta P0 based on the morphological difference function f(x) and the blood flow velocity V; modifying the first pressure difference delta P0 based onthe smoking history information of the patient to obtain a second pressure difference delta P. Based on the morphological difference function f(x), the influence of plaque information on the blood vessel pressure difference is defined, blood viscosity u and deviation rectifying parameters k are introduced based on the smoking history information of the patient to modify the first pressure difference delta P0 of the patient, the second pressure difference delta P is acquired, and pressure difference calculation accuracy is improved.

Description

technical field [0001] The invention relates to the field of biomedicine, in particular to a method and a device for acquiring pressure difference based on smoking history information. 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), computed tomography (CT), OCR, and intravascular ultrasound ...

AI Technical Summary

Problems solved by technology

For all blood flow models, when the blood viscosity is high, the blood loses more energy through the stenotic lesion, and the pressure difference becomes larger. Using the blood viscosity of normal people will lead to underestimation of the pressure difference and reduce the accuracy of the pressure difference calculation.

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