Timing Calibration in PET Using a Time Alignment Probe
We evaluate the Scanwell Time Alignment Probe for performing the timing calibration for the LBNL Prostate-Specific PET Camera. We calibrate the time delay correction factors for each detector module in the camera using two methods--using the Time Alignment Probe (which measures the time difference between the probe and each detector module) and using the conventional method (which measures the timing difference between all module-module combinations in the camera). These correction factors, which are quantized in 2 ns steps, are compared on a module-by-module basis. The values are in excellent agreement--of the 80 correction factors, 62 agree exactly, 17 differ by 1 step, and 1 differs by 2 steps. We also measure on-time and off-time counting rates when the two sets of calibration factors are loaded into the camera and find that they agree within statistical error. We conclude that the performance using the Time Alignment Probe and conventional methods are equivalent.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of Biological andEnvironmental Research; National Institutes of Health (NIH)
- DOE Contract Number:
- DE-AC02-05CH11231; NIHR33-EB001928
- OSTI ID:
- 902137
- Report Number(s):
- LBNL-59117; IETNAE; R&D Project: 445001; BnR: KP1401030; TRN: US0702794
- Journal Information:
- IEEE Transactions on Nuclear Science, Vol. 53, Issue 5pt1; Related Information: Journal Publication Date: 10/2006; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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