【摘要】 本文介绍了一种用于X线CT扇形束扫描图象重建的数学方法。给出了公式的推导,模拟计算结果,并且给出了专用计算机实现的框图,同时还与通常的扇形束扫描的重建结果作了比较。模拟结果表明了本方法具有如下优点:①确保了图象的质量;②节省了大量的计算时间,图象重建速度可以提高三倍;③专用计算机易于实现。更多还原

【Abstract】 This paper presents an algorithm of image reconstruction from fan beam scans inX-ray computed tomography. Relevant equation derivations, computer simulation results and com-puterized realization scheme are also given. Computer simulation demonstrates that this algorithm has the following advantages: 1) Ensured high image quality 2) Great calculation alleviation and threefold increase of image reconstruction efficiency 3) Feasible implementation of devoted computer concerned.更多还原