Title :
Evaluation of a data acquisition system for SPECT (PET)
Author :
Stenstrom, P. ; Rillbert, A. ; Habte, F. ; Bohm, C. ; Larsson, S.A.
Author_Institution :
Dept. of Phys., Stockholm Univ., Sweden
fDate :
8/1/2000 12:00:00 AM
Abstract :
A fully digital data acquisition (DAQ) system for a cylindrical (NaI(Tl)) SPECT camera has been developed and tested. This system digitizes pulses of the scintillation events from the closest (7 or 5) PMTs to the interaction point. The digitized pulse waveforms are processed to obtain estimates of amplitude and time of arrival. The authors describe various processing methods based on both simulated and real data. The results obtained from a set of three neighboring PMTs using 99mTc was 5.2 as std. dev. in timing resolution, 12.6% energy resolution and about 7 μs computing time per pulse
Keywords :
biomedical equipment; data acquisition; photomultipliers; positron emission tomography; single photon emission computed tomography; 7 mus; NaI:Tl; PMTs; Tc; computing time per pulse; cylindrical (NaI(Tl)) SPECT camera; digitized pulses; energy resolution; fully digital data acquisition system; medical diagnostic imaging; medical instrumentation; nuclear medicine; scintillation events; time of arrival; timing resolution; Amplitude estimation; Cameras; Data acquisition; Detectors; Digital signal processing; Firewire; Noise level; Physics; Positron emission tomography; Timing;
Journal_Title :
Nuclear Science, IEEE Transactions on
