A Simple Calculation of System Matrix for Image Reconstruction Based on the GATE Simulation

摘要：

　　The system matrix calculation plays an important role in the improvement of the speed and the quality of image reconstruction in PET (Positron Emission Tomography) imaging.It involves the calculation of a certain sequence of projection coefficient,which is generated through classifying different situations of the intercepted photon rays with the grid.In this study,a fast and simple algorithm for computing the projection coefficient is proposed.Compared with those traditional methods,the grid index of the proposed approach is determined by rows and columns in the two-dimensional coordinate,respectively.Experimental results based on GATE (Geant4 Application for Tomographic Emission) simulating PET imaging show that the proposed algorithm is efficient to build up a system matrix.

关键词： system matrix projection coefficient lines of response GATE image reconstruction

作者: Honglei Chen Jianfeng He Lei Ma Lipeng Pan Junqing Liu Qian Zhang

作者单位: Kunming University of Science and Technology, Institute of Information Engineering and Automation, Kunming, China

会议类型: 国际会议

会议名称: World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))

会议地点: 北京

会议语种:英文

页码: 1064-1067

在线出版日期: 2012-05-26（万方平台首次上网日期，不代表论文的发表时间）