Performance studies of a depth encoding multicrystal detector for PET

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.507248· OSTI ID:276521

Moisan, C; Tsang, G; Rogers, J G; Hoskinson, E M ^[1]

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1. TRIUMF, Vancouver, British Columbia (Canada)

The authors report the results of design studies for a multicrystal detector with the capacity to encode the Depth-Of-Interaction (DOI). These studies are based on a simulation that treats the interactions of {gamma}-rays and tracks scintillation photons in state-of-the-art position encoding PET detectors. The simulation was used to study the impact of a simple modification to the standard surface treatment of the EXACT HR PLUS block that induces a significant sensitivity of the photopeak pulse height upon the DOI of 511 keV {gamma}-rays. The depth resolution achieved with the altered block as well as the impact of the modification on its energy and position resolutions are presented. The results show a depth resolution of 6 to 7 mm for the inner crystals of the modified block. The center crystals show the largest increase in event position miscoding with 16% less encoding accuracy in the modified block compared to the original one.

• OSTI ID: 276521
• Report Number(s): CONF-951073--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt2 Vol. 43; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
55 BIOLOGY AND MEDICINE
BASIC STUDIES
DESIGN
GAMMA RADIATION
PERFORMANCE
POSITION SENSITIVE DETECTORS
POSITRON COMPUTED TOMOGRAPHY
SOLID SCINTILLATION DETECTORS
SPATIAL RESOLUTION