Egger M L, Morel C
Institute of Nuclear Physics, University of Lausanne, Switzerland.
Phys Med Biol. 1998 Mar;43(3):703-12. doi: 10.1088/0031-9155/43/3/020.
Various analytical, iterative and rebinning algorithms have been proposed for 3D reconstruction in positron emission tomography. This paper examines execution times of five analytical and rebinning algorithms. Meaningful comparisons are obtained by using similar software modules in all implementations. Reconstruction times are shown to differ by vast amounts: the Favor algorithm of Defrise et al is more than twice as fast as the widely used reprojection algorithm of Kinahan and Rogers; the Fourier rebinning algorithm (Fore) recently developed by Defrise is more than 15 times faster than the reprojection algorithm.
在正电子发射断层扫描的三维重建中，已经提出了各种分析、迭代和重排算法。本文研究了五种分析和重排算法的执行时间。通过在所有实现中使用相似的软件模块来进行有意义的比较。结果表明，重建时间差异巨大：Defrise等人的Favor算法比广泛使用的Kinahan和Rogers的重投影算法快两倍多；Defrise最近开发的傅里叶重排算法（Fore）比重投影算法快15倍以上。
