Abstract
In this paper, an investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high-resolution PET modules is reported. PSAPDs with 8 × 8 mm2 have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV γ-rays and coincidence timing resolution of ∼3 ns (FWHM) have been recorded with PSAPD coupled to 1 × 1 × 20 mm3 LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of < 4.5 mm (FWHM) has been measured by coupling two PSAPDs on opposite ends of a 20 mm long LSO crystal with a 1 × 1 mm2 cross section. Based on these results, PSAPDs appear to be promising for high resolution PET. An important advantage of these PSAPDs is significant reduction in electronic readout requirements.
Original language | English (US) |
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Title of host publication | IEEE Nuclear Science Symposium and Medical Imaging Conference |
Editors | S. Metzler |
Pages | 1411-1415 |
Number of pages | 5 |
Volume | 3 |
State | Published - 2002 |
Event | 2002 IEEE Nuclear Science Symposium Conference Record - Norfolk, VA, United States Duration: Nov 10 2002 → Nov 16 2002 |
Other
Other | 2002 IEEE Nuclear Science Symposium Conference Record |
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Country/Territory | United States |
City | Norfolk, VA |
Period | 11/10/02 → 11/16/02 |
ASJC Scopus subject areas
- Computer Vision and Pattern Recognition
- Industrial and Manufacturing Engineering