基于OpenGL的冠脉树在最佳视角下的投影显示  

Projection of Coronary Arterial Tree in Optimal View Based on OpenGL

作　　者：胡春红[1] 郁道银[1] 孙正[1] 陈晓冬[1] 

机构地区：[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

出　　处：《光电子．激光》2007年第5期629-633,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(30500129);高等学校博士学科点专项科研基金资助项目(20030056018);中国博士后科学基金资助项目(2004036361)

摘　　要：在冠脉树三维重建的基础上研究了感兴趣血管段最佳视角的计算方法,该方法首先获得满足感兴趣血管段最小投影缩短的造影角度范围,然后在该范围内进一步选取满足最小血管遮盖的造影角度。对造影系统的X射线透视投影原理和OpenGL中的透视投影原理进行分析比较后,利用OpenGL显示冠脉树在感兴趣血管段最佳视角下的投影图像。实验结果表明,在最佳视角下的投影图像中,血管损伤长度和直径狭窄能更好地估计,从而用于指导介入性治疗。A method was proposed to calculate the optimal views of segment of interest based on 3-D reconstruction of coronary arterial tree. The optimal views ware obtained by choosing views with minimal vessel overlapping from a set of anglographic views with minimal vessel foreshortening. Theory X-ray perspective projection and OpenGL perspective projection is analyzed and compared, then the projection of coronary arterial tree in optimal view is displayed by using OpenGL. The experiments show the assessment of lesion length and idameter narrowing can be optimized based on the projection in optimal view,and it can be utilized to assist interventional cardiologists in planning a coronary intervention.

关 键 词：冠脉造影 最佳视角 OPENGL 透视投影 三维重建 

分 类 号：R318.51[医药卫生—生物医学工程]