Title :
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
fDate :
6/1/2002 12:00:00 AM
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;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2002.1039542
