Simultaneous attenuation and scatter correction by restoration in PET imaging

Author

Bentourkia, Mhamed ; Sarrhini, Otman

Author_Institution

Dept. of Nucl. Med. & Radiobiol., Sherbrooke Univ., Que., Canada

Volume

6

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

3712

Abstract

The aim in this work is to correct for attenuation and scatter in PET by analytically assessing the distribution of the scattered photons using the emission and the transmission images, the probability of scatter interactions and the detection efficiency. At an energy threshold above 300 keV, the attenuated photons are exactly those have been scattered. These are removed from the coincidence detection and restored to the coincidences corresponding to the scattering angle θ=0. We applied this new method for data obtained with a small animal PET scanner but the method is equivalent for a whole body scanner.

Keywords

coincidence techniques; image reconstruction; image restoration; image scanners; medical image processing; positron emission tomography; probability; 300 keV; PET imaging; attenuated photons; coincidence detection; detection efficiency; emission image; image restoration; scatter correction; scatter interaction probability; scattered photon distribution; simultaneous attenuation; small animal PET scanner; transmission images; whole body scanner; Animals; Attenuation; Detectors; Electromagnetic scattering; Image analysis; Image reconstruction; Image restoration; Particle scattering; Positron emission tomography; Whole-body PET;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466687

Filename

1466687