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

Author

Wear, J.A. ; Karp, J.S. ; Freifelder, R. ; Mankoff, D.A. ; Muehllehner, G.

Author_Institution

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

Volume

45

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

1231

Lastpage

1237

Abstract

A detailed model of the response of large area NaI(TI) 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 pileup 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 electronics; biomedical equipment; modelling; positron emission tomography; sodium compounds; solid scintillation detectors; thallium; HEAD PENN-PET scanner; Monte Carlo model; NaI(Tl)-based PET detectors model; NaI:Tl; data acquisition electronics; detector performance degradation; event processing; high count rate performance; imaging system´s performance; large area NaI(TI) detectors; light response functions; medical diagnostic imaging; medical instrumentation; nuclear medicine; signal integration times; triggering electronics; Data acquisition; Degradation; Event detection; Head; Monte Carlo methods; Performance evaluation; Positron emission tomography; Predictive models; System performance; Time factors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.682008

Filename

682008