A comparison of CsI:Tl and GOS in a scintillator-CCD detector for nuclear medicine imaging

A number of portable gamma cameras for medical imaging use scintillator-CCD based detectors. This paper compares the performance of a scintillator-CCD based portable gamma camera with either a columnar CsI:Tl or a pixelated GOS scintillator installed. The CsI:Tl scintillator has a sensitivity of 40%...

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Bibliographic Details
Published in:Journal of instrumentation 2016-09, Vol.11 (9), p.P09009-P09009
Main Authors: Bugby, S.L., Jambi, L. K., Lees, J.E.
Format: Article
Language:English
Subjects:
Cameras
Counting
Detectors
Instrumentation
Nuclear medicine
Portability
Variability
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Summary:A number of portable gamma cameras for medical imaging use scintillator-CCD based detectors. This paper compares the performance of a scintillator-CCD based portable gamma camera with either a columnar CsI:Tl or a pixelated GOS scintillator installed. The CsI:Tl scintillator has a sensitivity of 40% at 140.5 keV compared to 54% with the GOS scintillator. The intrinsic spatial resolution of the pixelated GOS detector was 1.09 mm, over 4 times poorer than for CsI:Tl. Count rate capability was also found to be significantly lower when the GOS scintillator was used. The uniformity was comparable for both scintillators.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/11/09/P09009