A model of the high count rate performance of NaI(Tl)-based PET detectors

Journal Article · Mon Jun 01 04:00:00 EDT 1998 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.682008· OSTI ID:649403

Wear, J A; Karp, J S; Freifelder, R ^[1]; Mankoff, D A ^[2]; Muehllehner, G ^[3]

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1. Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Radiology
2. Univ. of Washington, Seattle, WA (United States). Dept. of Radiology
3. UGM Medical Systems, Philadelphia, PA (United States)

A detailed model of the response of large-area NaI(Tl) detectors used in PET and their triggering and data acquisition electronics has been developed. This allows one to examine the limitations of the imaging system`s performance due to degradation in the detector performance from light pile-up and deadtime from triggering and event processing. Comparisons of simulation results to measurements from the HEAD PENN-PET scanner have been performed to validate the Monte Carlo model. The model was then used to predict improvements in the high count rate performance of the HEAD PENN-PET scanner using different signal integration times, light response functions, and detectors.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-88ER60642
• OSTI ID: 649403
• Report Number(s): CONF-971147--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt2 Vol. 45; 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
IMAGE PROCESSING
MATHEMATICAL MODELS
NAI DETECTORS
PERFORMANCE
POSITION SENSITIVE DETECTORS
POSITRON COMPUTED TOMOGRAPHY