Title :
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
fDate :
10/1/1992 12:00:00 AM
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;
Journal_Title :
Nuclear Science, IEEE Transactions on
