NEMA count-rate evaluation of the first and second generation of the Ecat Exact and Ecat Exact HR family of scanners

Author

Eriksson, Lars ; Wienhard, K. ; Eriksson, Marita ; Casey, M.E. ; Knoess, C. ; Bruckbauer, T. ; Hamill, J. ; Mulnix, T. ; Vollmar, S. ; Bendriem, B. ; Heiss, W.D. ; Nutt, R.

Author_Institution

CTI PET Syst., Inc., Knoxville, TN, USA

Volume

49

Issue

3

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

640

Lastpage

643

Abstract

The first and second generation of the Exact and Exact HR family of scanners has been evaluated in terms of noise equivalent count rate (NEC) and count-rate capabilities. The new National Electrical Manufacturers Association standard was used for the evaluation. In spite of improved electronics and improved count-rate capabilities, the peak NEC was found to be fairly constant between the generations. The results are discussed in terms of the different electronic solutions for the two generations and its implications on system dead time and NEC count-rate capability.

Keywords

image scanners; positron emission tomography; Ecat Exact scanner; NEMA count-rate evaluation; National Electrical Manufacturers Association standard; count-rate capabilities; electronic solutions; first generation; noise equivalent count count-rate capability; noise equivalent count rate; positron camera systems; positron emission tomography count-rate performance; positron emission tomography imaging; second generation; system dead time; Cameras; Detectors; Helium; High-resolution imaging; Manufacturing; National electric code; Noise generators; Positron emission tomography; Production systems; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2002.1039542

Filename

1039542