The effects of pulse pile-up on point-source measurements performed on different PET scanning devices

Author

Badawi, R.D. ; Surti, S. ; Kemp, B. ; Zimmerman, R.E. ; El Fakhri, G. ; Holdsworth, C.H. ; Worstell, W.A.

Author_Institution

Dana-Farber Cancer Inst., Harvard Med. Sch., Boston, MA, USA

Volume

4

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

2581

Abstract

We have quantified resolution and contrast loss as a function of noise-equivalent count rate on the GSO-based Philips Allegro and the pixelated NaI CPET2 using previously developed methodology involving the NEMA NU 2-2001 70 cm test phantom and a Na-22 point source. We found that at peak NEC, neither system showed significant loss of resolution. However, after accounting for event loss due to dead time, loss of contrast was seen in both systems.

Keywords

phantoms; positron emission tomography; scintillation counters; GSO-based Philips Allegro; NEMA NU 2-2001; Na-22 point source; PET scanning devices; dead time; noise-equivalent count rate; peak NEC; pixelated NaI CPET2; point-source measurements; pulse pile-up; scintillation detectors; test phantom; Event detection; Gamma ray detection; Gamma ray detectors; Loss measurement; National electric code; Nuclear medicine; Performance evaluation; Positron emission tomography; Pulse measurements; Radiology;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1352418

Filename

1352418