DocumentCode :
892329
Title :
Reducing edge effects and improving position resolution in position sensitive NaI(TI) detectors
Author :
Freifelder, Richard ; Haigh, Arthur T. ; Karp, Joel S.
Author_Institution :
Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA
Volume :
40
Issue :
2
fYear :
1993
fDate :
4/1/1993 12:00:00 AM
Firstpage :
208
Lastpage :
213
Abstract :
Large two-dimensional position sensitive NaI(Tl) crystals used in positron emission tomographs and elsewhere normally have gaps or inactive, unusable areas at the edges. Experiments aimed at reducing these edge effects have been performed. Unencapsulated crystals have been used to test the feasibility of optically coupling crystals together to decrease gap size. Other experiments increased the sampling of the scintillation light at the edges in order to obtain better position sensitivity. In addition, the edges were treated to reduce unwanted reflections and increase the position sensitive area. Experiments aimed at improving the position resolution throughout the crystal, as well as at the edges, were performed
Keywords :
position sensitive particle detectors; scintillation counters; NaI:Tl; edge effects; position resolution; position sensitive NaI(TI) detectors; positron emission tomographs; two-dimensional; Biomedical optical imaging; Crystals; Face detection; Nuclear medicine; Optical coupling; Optical sensors; Position sensitive particle detectors; Pulse measurements; Radioactive decay; Signal resolution;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/23.212343
Filename :
212343
Link To Document :
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