Title :
Evaluation of a data acquisition system for SPECT (PET)
Author :
Stenstrom, P. ; Rillbert, A. ; Habte, E. ; Bohm, C. ; Larsson, S.A.
Author_Institution :
Dept. of Phys., Stockholm Univ., Sweden
Abstract :
A fully digital data acquisition (D AQ) 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 ns std. dev. in timing resolution, 12.6% energy resolution and the computing time per pulse about 7 μs
Keywords :
biomedical equipment; data acquisition; positron emission tomography; single photon emission computed tomography; 5.2 ns; 7 mus; PET; SPECT; computing time per pulse; data acquisition system evaluation; digitized pulse waveforms; energy resolution; interaction point; medical diagnostic imaging; medical instrumentation; nuclear medicine; processing methods; real data; scintillation events pulses digitization; simulated data; time of arrival; Amplitude estimation; Cameras; Data acquisition; Digital signal processing; Energy resolution; Hospitals; Physics; Positron emission tomography; Timing; Vents;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.842802
