| 基于活动轮廓模型的冠状动脉血管段运动跟踪 |
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| 引用本文： | 孙正,郁道银. 基于活动轮廓模型的冠状动脉血管段运动跟踪[J]. 生物医学工程学杂志, 2007, 24(1): 9-14 |
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| 作者姓名： | 孙正 郁道银 |
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| 作者单位： | 1. 天津大学,精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津,300072;华北电力大学,电子与信息工程学院,保定,071003
2. 天津大学,精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津,300072 |
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| 摘 要： | 提出一种新的冠状动脉血管二维运动分析方法,采用活动轮廓(snake)模型技术,对X射线冠状动脉造影图像序列中的血管段进行运动跟踪。把前一帧中snake的停留位置作为当前帧snake的初始位置,通过snake变形得到当前时刻的血管中心线。通过在snake能量函数中嵌入灰度相似度匹配,保证了跟踪结果的准确性。采用临床采集的冠脉造影图像序列对算法进行了验证。
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| 关 键 词： | X射线冠状动脉造影 活动轮廓模型 运动跟踪 |
| 修稿时间： | 2004-04-202005-01-18 |
Motion Tracking of Coronary Vessel Segment Based on Active Contour Model |
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| Sun Zheng,Yu Daoyin. Motion Tracking of Coronary Vessel Segment Based on Active Contour Model[J]. Journal of biomedical engineering, 2007, 24(1): 9-14 |
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| Authors: | Sun Zheng Yu Daoyin |
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| Affiliation: | 1 School of Precision Instrument and Opto-Electronic Engineering, Zianjin University, Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072 ,China; 2School of Electronic and Information Engineering, North China Electric Power University, Baoding 071003, China |
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| 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. |
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| Keywords: | X-ray coronary artery angiography Active contour model Motion tracking |
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