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An advanced fully 3D OSEM reconstruction for positron emission tomography |
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| Authors: | YUN Ming-Kai LIU Shuang-Quan SHAN Bao-Ci WEI Long Key Laboratory of Nuclear Analytical Techniques |
| Affiliation: | YUN Ming-Kai1,2 LIU Shuang-Quan1,2 SHAN Bao-Ci1 WEI Long1 1 Key Laboratory of Nuclear Analytical Techniques,Institute of High Energy Physics,CAS,Beijing 100049,China 2 Graduate University of Chinese Academy of Sciences,China |
| Abstract: | A fully 3D OSEM reconstruction method for positron emission tomography(PET) based on symmetries and sparse matrix technique is described.Great savings in both storage space and computation time were achieved by exploiting the symmetries of scanner and sparseness of the system matrix.More reduction of storage requirement was obtained by introducing the approximation of system matrix.Iteration-filter was performed to restrict image noise in reconstruction.Performances of simulation data and phantom data got f... |
| Keywords: | 3D OSEM PET symmetries sparse matrix |
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