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

Author

Wear, James A. ; Karp, Joel S. ; Freifelder, Richard ; Mankoff, David A. ; Muehllehner, Gerd

Author_Institution

Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA

Volume

2

fYear

1997

fDate

9-15 Nov 1997

Firstpage

1203

Abstract

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 the authors 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

Keywords

Monte Carlo methods; biomedical equipment; gamma-ray detection; modelling; positron emission tomography; sodium compounds; solid scintillation detectors; thallium; Monte Carlo model validation; NaI(Tl)-based PET detectors; NaI:Tl; data acquisition electronics; deadtime; event processing; high count rate performance; light pile-up; light response functions; medical diagnostic imaging; medical instrumentation; nuclear medicine; signal integration time; triggering electronics; Data acquisition; Degradation; Detectors; Event detection; Head; Monte Carlo methods; Performance evaluation; Positron emission tomography; Predictive models; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.670525

Filename

670525