Clustering algorithm-based lower limb vascular calcification index multi-parameter accumulation calculation method

Abstract

The invention discloses a clustering algorithm-based lower limb vascular calcification index multi-parameter accumulation calculation method, comprising the steps: firstly carrying out the superpixelsegmentation of a CT image, and enabling calcified spots in the CT image to be segmented in each superpixel region; after the super-pixel segmentation is finished, extracting a brightness characteristic value of a superpixel region where the calcified spots are located by using a Lab color space, and performing edge detection and contour extraction on the calcified spots in the image; and after edge detection and contour extraction, fitting the calcified spots in the image by using a segmented ellipse, and extracting the area of the calcified spots after optimizing an ellipse contour. According to the clustering algorithm-based lower limb vascular calcification index multi-parameter accumulation calculation method, the judgment value of the calcification degree in the CT image is obtainedbased on multiple parameters such as the brightness characteristic value, the area of the calcified spot and the cumulative correction coefficient, and the CT image of the lower limb blood vessel is directly processed, so that the error of experience judgment is effectively reduced.

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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