Title :
List mode 3D PET reconstruction using an exact system matrix and polar voxels
Author :
Ansorge, Richard
Author_Institution :
Univ. of Cambridge, Cambridge
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
This paper describes a computational experiment to examine the feasibility of full 3D PET reconstruction using MLEM and OSEM using unbinned list mode date and an exact system matrix. A key feature of the approach is the use of polar pixels in the transverse plane to allow a full exploitation of the axial symmetry of the detector elements and hence permit the storage of an exact precomputed system matrix.
Keywords :
expectation-maximisation algorithm; image reconstruction; matrix algebra; medical image processing; phantoms; positron emission tomography; MLEM; OSEM; exact system matrix; maximum likelihood ordered subsets expectation maximization method; polar voxels; unbinned list mode 3D PET reconstruction; Animals; Crystals; Detectors; Helium; Image reconstruction; Imaging phantoms; Maximum likelihood detection; Maximum likelihood estimation; Nuclear and plasma sciences; Positron emission tomography;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4436873
