Title :
PETRRA: preliminary experimental results from the first full size detector and dead time simulation of the count rate performance of a unique whole body PET camera
Author :
Visvikis, D. ; Wells, K. ; Ott, R.J. ; Stephenson, R. ; Bateman, J.E. ; Connolly, J. ; Tappern, G.
Author_Institution :
Inst. of Cancer Res., R. Marsden Hospital, Sutton, UK
fDate :
8/1/1995 12:00:00 AM
Abstract :
The design and construction of the first of two BaF2-TMAE large area detectors to be incorporated in a unique double headed whole body PET system (PETRRA) has been completed. Preliminary experimental work carried out with the first large area detector shows an absolute detection efficiency of 20.5% and a time resolution of 3.5 ns (FWHM) and 8.0 ns (FWTM), using 8 mm thick scintillation crystals. An analytical model of the electronic read-out system has been developed to investigate the rate capability of the new scanner. This model predicts that under typical imaging conditions, with 40 MBq of activity in the field of view, the proposed scanner will acquire coincidence data at 20-25 kcps
Keywords :
barium compounds; coincidence techniques; positron emission tomography; solid scintillation detectors; 40 MBq; BaF2; BaF2-TMAE large area detectors; PETRRA; absolute detection efficiency; analytical model; coincidence data; count rate performance; dead time simulation; double headed whole body PET system; electronic read-out system; full size detector; imaging conditions; rate capability; scintillation crystals; time resolution; whole body PET camera; Cameras; Cancer; Crystals; Hospitals; Laboratories; Oncology; Positron emission tomography; Prototypes; Solid scintillation detectors; Whole-body PET;
Journal_Title :
Nuclear Science, IEEE Transactions on
