Methods and systems for acquiring centerline of aorta based on ct sequence images

A method for acquiring centerline of aorta based on CT sequence images, comprising:

• acquiring three-dimensional data of CT sequence images;
• acquiring a gravity center of heart and a gravity center of spine based on the three-dimensional data;
• filtering impurity data from the three-dimensional data of CT sequence images, to obtain an image containing left atrium, left ventricle and without interfering coronary artery tree;
• layered slicing the image containing left atrium, left ventricle and without interfering coronary artery tree, to obtain a group of binarized images;
• obtaining a circle center and an radius corresponding to the circle from each layer of slice in the group of binarized images, to generate a point list and an radius list;
• mapping one or more pixel points located in the point list and the radius list within each layer of slice to the image containing left atrium, left ventricle and without interfering coronary artery tree, and obtaining a centerline of aorta.