3D-OSEM transition matrix for high resolution PET imaging with modeling of the gamma-event detection

Author

Ortuno, J.E. ; Kontaxakis, G. ; Guerra, P. ; Santos, A.

Volume

5

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

3046

Lastpage

3050

Abstract

We present an efficient methodology for the calculation of the transition matrix for 3D-OSEM iterative image reconstruction, including a model of the gamma-event detection in crystal with photoelectric and Compton scatter interaction. The method is adapted for high resolution PET cameras composed of pixelated scintillator crystal arrays and with axial symmetry. 2D-OSEM algorithm, in combination with rebinning methods such as SSRB and FORE, can also be performed using a subset of this transition matrix

Keywords

biocomputing; biomedical imaging; gamma-ray detection; image reconstruction; position sensitive particle detectors; positron emission tomography; solid scintillation detectors; 3D-OSEM transition matrix; Compton scatter interaction; FORE; PET cameras; SSRB; axial symmetry; gamma-event detection; high resolution PET imaging; iterative image reconstruction; photoelectric scatter interaction; pixelated scintillator crystal arrays; subset; Cameras; Gamma ray detection; Gamma ray detectors; High-resolution imaging; Image reconstruction; Image resolution; Iterative methods; Optical imaging; Positron emission tomography; Scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466325

Filename

1466325