Carotid artery intima thickness automatic measurement method and system

The invention provides a carotid artery intima thickness automatic measurement method and system. The method comprises: S1, acquiring a carotid artery radial tangent plane image; S2, identifying a blood vessel center line position of the image; S3, segmenting the image according to the position of the central line of the blood vessel to form segmented grayscale images, S4, obtaining a binarizationthreshold value corresponding to each segmented grayscale image, and performing edge detection on the segmented grayscale images through the binarization threshold values to obtain a contour line image corresponding to each segmented grayscale image; S5, according to the contour line image positions, obtaining a first edge line, close to one side of the carotid artery blood vessel cavity, of eachsegmentation gray level image and a second edge line, away from one side of the blood vessel cavity, of each segmentation gray level image; S7, according to the pixel points corresponding to each other along the first edge li