Study of 3D fast Compton camera image reconstruction method by algebraic spatial sampling
作者: Zhiyang YaoYongshun XiaoBo WangYilin LiuQinhun HouLu LuZhiqiang Chen
作者单位: 1Department of Engineering Physics, Tsinghua University, Beijing, 100084, China
2Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, China
刊名: Nuclear Inst. and Methods in Physics Research, A, 2020, Vol.954
来源数据库: Elsevier Journal
DOI: 10.1016/j.nima.2018.10.023
关键词: Compton cameraImage reconstructionAlgebraic spatial sampling
原始语种摘要: Abstract(#br)In this paper, we present an algebraic method to acquire the point on the event conical surface using dimension-reduction and canonical form, for direct reconstruction, pre-calculation of list-mode maximum likelihood expectation maximization(LM-MLEM) algorithm as a fast back-projection method, or an approach of spatial symmetrically sampling with resolution recovery in stochastic origin ensemble(SOE) algorithm. The 3D image reconstruction based on the dimension-reduction and canonical form sampling method is not affected by the choice of imaging space such as the size of voxels and orientation. Moreover, it can achieve nearly real-time imaging for changeable imaging space because of its fewer computations. Simulation and experiment results show that this method can achieve...
全文获取路径: Elsevier  (合作)

  • reconstruction 复原
  • algebraic 代数的
  • camera 摄影机
  • spatial 空间的
  • image 
  • sampling 取样
  • imaging 图像形成
  • orientation 定向
  • projection 投射
  • achieve 达到