The FBP local algorithm on the base FBP was presented for the small fan X-ray CT so as to improve the testing efficiency for the fault of SRM, which was used to implement local tomography by data of region-of-interest (ROI) of SRM.

• 针对小张角扇形射线束CT的特点及提高固体火箭发动机缺陷检测效率,本文在滤波反投影(FBP)算法的基础上,提出了局部区域的图像重建方法,采用感兴趣的局部区域(ROI)的采样数据,实现了固体火箭发动机局部图像重建。