Title :
Performance comparison of a current LSO PET scanner versus the same scanner with upgraded electronics
Author :
Puterbaugh, K.C. ; Breeding, J.E. ; Musrock, M.S. ; Seaver, Chad ; Casey, M.E. ; Young, J.W.
Author_Institution :
CPS Innovations, Knoxville, TN, USA
Abstract :
Performance of an existing LSO PET scanner was compared to that of the same scanner with upgraded electronics. TDC step resolution decreased to 500 ps while background corrected system energy resolution increased to 18.89%. This allowed a lowering of the coincidence time window to 4.5 ns and an increase in the system LLD to 400 keV. Electronics dead time was reduced to 136 ns. Singles rates from each DEA were increased 100%. An almost 100% increase in NEC was achieved due to the increased electronics performance. The peak NEC was greater than 93,000.
Keywords :
gamma-ray detection; image scanners; medical image processing; nuclear electronics; positron emission tomography; solid scintillation detectors; 136 ns; 4.5 ns; 400 keV; 500 ps; background corrected system energy resolution; current LSO PET scanner; detector electronics assembly; electronics dead time; time to digital step resolution; upgraded electronics; Analog-digital conversion; Application specific integrated circuits; Assembly systems; Computational fluid dynamics; Detectors; Energy resolution; Field programmable gate arrays; National electric code; Positron emission tomography; Read-write memory;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352257
