title: [Motion tracking of coronary vessel segment based on active contour model].
abstract: An original method for analyzing two-dimensional motion of coronary arteries from X-ray angiogram sequences based on active contour model (snake) is presented. The convergence result of the snake in previous frame is used as the initial guess in current frame. Centerlines of interesting vessel segments at successive time instants can be detected through snake deforming from its initial position to optimal position by minimizing the proper energy function. Measurement of intensity similarity between consecutive frames is encompassed into the energy function to obtain accurate tracking. The effectiveness of the method has been demonstrated on clinical coronary artery angiogram sequences and results are encouraging.
authors.affiliation: School of Precision Instrument and Opto-Electronic Engineering, Tianjin University, Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China. sunzheng-tju@163.com
authors.forename: Zheng
authors.initials: Z
authors.lastname: Sun
authors.forename: Daoyin
authors.initials: D
authors.lastname: Yu
mesh_terms: D017023:Coronary Angiography; D003331:Coronary Vessels / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D009068:Movement