迭代算法用于投影数据不完备时重建断层图像的研究

在工业CT的检测过程中，由于各种原因而可能造成投影数据的不完备，这样利用传统解析方法重建出的图像会有严重失真。应用迭代算法则可以使重建图像质量有很大改善。应用基于最大似然估计的梯度法和凸函数法对不完备投影数据进行重建。     

Dose reconstruction with Compton camera during proton therapy via subset-driven origin ensemble and double evolutionary algorithm

Compton camera-based prompt gamma(PG) imaging has been proposed for range verification during proton therapy. However, a deviation between the PG and dose distributions, as well as the difference between the reconstructed PG and exact values, limit the effectiveness of the approach in accurate range monitoring during clinical applications. The aim of the study was to realize a PG-based dose reconstruction with a Compton camera, thereby further improving the prediction accuracy of in vivo range v...