Multi-parameter cumulative calculation method of lower extremity vascular calcification index based on clustering algorithm

Abstract

The invention discloses a multi-parameter cumulative calculation method for vascular calcification index of lower extremities based on a clustering algorithm. Firstly, superpixel segmentation is performed on a CT image, and calcified spots in the CT image are divided into each superpixel region; after the superpixel segmentation is completed, Use the Lab color space to extract the brightness feature value of the superpixel area where the calcified spots are located, and perform edge detection and contour extraction on the calcified spots in the image. After edge detection and contour extraction, use segmented ellipses to fit the calcified spots in the image And after optimizing the ellipse outline, the area of ​​the calcification spot is extracted; the present invention is based on multiple parameters such as the brightness characteristic value, the area of ​​the calcification spot and the cumulative correction coefficient to obtain the judging value of the degree of calcification in the CT image, and directly perform calcification on the CT image of the blood vessels of the lower extremities. The treatment can effectively reduce the error of empirical judgment.

Description

technical field [0001] The invention belongs to the technical field of medical image processing, and in particular relates to a multi-parameter cumulative calculation method for vascular calcification index of lower extremities based on a clustering algorithm. Background technique [0002] Diabetic lower extremity arteriosclerosis obliterans is a relatively serious peripheral arterial vascular disease when diabetes develops to a certain degree. Figure 5 As shown, diabetes, hypertension, lipid metabolism disorder, and smoking are important risk factors for its onset. Because diabetic patients are under the stimulation of high blood sugar factors for a long time, the degree of peripheral arterial disease is often more serious than that of simple hypertension patients, and patients with lower extremity arterial disease are more likely to cause higher disability and death rates. Mild cases can cause numbness and chills in the lower limbs, moderate to severe cases can cause inte...

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Problems solved by technology

[0005] In order to solve the problem of the lack of effective calculation methods for the lower extremity vascular calcification index in the prior art, the present invention proposes a multi-parameter cumulative calculation method for the lower extremity vascular calcification index based on a clustering algorithm. value, calcification area, combined with the corresponding cumulative correction coefficient obtained from the study of vascular fluid mechanics, the quantitative value of the lower extremity vascular calcification index is given. Diabetic feet at risk of amputation provide data basis

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