Image reconstruction from Compton scattering data

作     者：PANQiang-Yan Y.GONO S.MOTOMURA S.ENOMOTO Y.YANO 

作者机构：ShanghaiInstituteofAppliedPhysicstheChineseAcademyofSciencesShanghai201800China Departmentofphysicskyushuuniversityfukuoka812-8581japan CyclotroncenterRIKENsuitama351-0198japan 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2004年第15卷第6期

页      面：365-367页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

主　　题：康普敦散射 锗位置探测仪 图象重构 重离子束 γ-射线 

摘      要：A new image reconstruction method was developed for a Compton camera. A simulation to determine a γ-ray source position was performed by using the simulation tool, GEANT4. An image reconstruction was made in two steps. First, a three dimensional image was constructed and projected in one selected plane, then the points from each ellipse was picked up by taking the peak points of a density distribution of crossing points between the ellipse and the first step image. The second step procedure improved the accuracy and the spatial resolution of a position de- termination significantly, comparing with the image obtained by only the first step. The accuracy and the resolution for a point source were obtained to be about 0.02 mm and (1.35±0.15) mm, respectively. The same procedure was applied to an imaging of the distributed γ-ray source.