摘要
DSA血管三维重建技术作为有力的辅助手段能够弥补DSA设备在成像上的不足,能够为用户提供具有真实感的血管三维空间信息,便于医生从多角度、多层次对病灶进行观察和分析。该技术在心血管的辅助诊断、手术仿真、引导治疗等方面都能够发挥重要的作用。在此从DSA造影设备的成像原理出发,详细分析了基于两幅单平面造影图像的血管三维重建所涉及的一些关键性技术,包括DSA系统设备的标定、血管骨架的分割、特征点的识别和匹配、血管空间点的重建和血管段的拟合、血管的截面的描述与血管树的三维显示技术等等。最后对DSA血管三维重建技术所面临的主要难题进行了分析,并展望了其未来的发展。
3D reconstruction of vessels from X-ray angiographic images is a powerful tool to make up the deficiency of the equipment for digital subtraction angiography （DSA）. It allows the observation of realistic information of vessels in three dimensions, which is convenient for doctors to diagnose and analyze of the vessel diseases. Therefore 3D reconstruction of vessels plays an important role in many aspects such as diagnosis assistance, surgery simulation and therapy guidance, etc. In this paper the main techniques of 3D reconstruction of vessels based on two X-ray angiographic images are reviewed in detail, which include the calibration of DSA equipment, vessel segmentation, identification and matching of the feature points, 3D points reconstruction, vessel curve fitting, vascular section description and 3D display of vascular trees. At last, the difficulties of 3D reconstruction of vessels based on DSA images are summarized, and prospects of this technique are made.
出处
《中国生物医学工程学报》
EI
CAS
CSCD
北大核心
2005年第6期655-661,667,共8页
Chinese Journal of Biomedical Engineering
基金
国家重点基础研究发展规划资助项目(973项目)(2003CB716105)
关键词
DSA
三维重建
标定
分割
DSA
3D reconstruction
calibration
segmentation
