Timing Calibration in PET Using a Time Alignment Probe

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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 ... continued below

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Moses, William W. & Thompson, Christopher J. May 5, 2006.

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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.

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  • Journal Name: IEEE Transactions on Nuclear Science; Journal Volume: 53; Journal Issue: 5pt1; Related Information: Journal Publication Date: 10/2006

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  • Report No.: LBNL--59117
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NIHR33-EB001928
  • Office of Scientific & Technical Information Report Number: 902137
  • Archival Resource Key: ark:/67531/metadc882950

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  • May 5, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Sept. 29, 2016, 7:14 p.m.

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Moses, William W. & Thompson, Christopher J. Timing Calibration in PET Using a Time Alignment Probe, article, May 5, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc882950/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.