CT心脏扫描直接三维重建算法研究  

A Research on Direct 3-D Reconstruction Algorithm Used in Cardiac CT Scanning

作　　者：霍修坤[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《中国医疗器械杂志》2006年第2期90-93,共4页Chinese Journal of Medical Instrumentation

摘　　要：随着锥形束CT的出现,投影数据的采集速度明显加快,再加上重建算法的不断改进,心脏的CT成像质量必将得到改善。提出了一种双锥束的扫描结构,它改进了FDK算法,并设计了使用该结构实现心脏图像直接三维重建的方法,从而改善了心脏的CT成像质量。The data-sampling speed of cone-beam CT is faster than that of fan-beam CT, so the cardiac image will be more and more perfect in cone-beam CT with the improvement of the reconstruction algorithm. A new scanning framework of double cone-beam ,which has improved FDK algorithm is presented, and a method of 3-D cardiac image reconstruction based on the new scanning framework is designed resulting in a better cardiac image quality.

关 键 词：锥束扫描  直接三维 体积重建 反投影 

分 类 号：R814.42[医药卫生—影像医学与核医学] TP391.41[医药卫生—放射医学]