Testing of the spatial resolution and efficiency of scintillating fiber PET modules

Author

Chaney, R.C. ; Fenyves, E.J. ; Hammack, H. ; Nelson, G. ; Anderson, J.A. ; Antich, P.P. ; Atac, M.

Author_Institution

Texas Univ., Richardson, TX, USA

Volume

39

Issue

5

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1472

Lastpage

1474

Abstract

Two experimental positron emission tomography (PET) camera modules were constructed using (1) two 5-cm×5-cm×2.5-cm detector stacks made of parallel 0.5- and 1.0-mm-diameter scintillating fibers and (2) two 5-cm×5-cm×5-cm detector stacks made of alternating x and y layers of 0.5-and 1.0-mm diameter scintillating fibers. Each stack was viewed by Hamamatsu R2486 position sensitive photomultipliers. The time resolution of the coincidence system was 10 ns. The spatial resolution and efficiency of the PET modules was tested using an approximately 1 μCi 0.5-mm-diameter Na-22 source. The best results were achieved with the 1.0-mm parallel fiber stacks: 2.0-mm spatial resolution (FWHM) and 2.3% efficiency. Possibilities to improve the characteristics of this agreement and, particularly, the alternating x and y layer stacks are discussed

Keywords

biomedical equipment; computerised tomography; position sensitive particle detectors; radioisotope scanning and imaging; scintillation counters; 0.5 mm; 1 mm; 10 ns; 10^-6 Ci; ²²Na; diagnostic nuclear medicine; position sensitive photomultipliers; positron emission tomography; scintillating fiber PET modules; spatial resolution; Cameras; Gamma ray detectors; Laboratories; Modular construction; Monte Carlo methods; Optical fiber testing; Photomultipliers; Plastics; Positron emission tomography; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.173226

Filename

173226