Calibration of the Accuscan II In Vivo System for I-131 Thyroid Counting

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This report describes the March 2011 calibration of the Accuscan II HpGe In Vivo system for I-131 thyroid counting. The source used for the calibration was an Analytics mixed gamma source 82834-121 distributed in an epoxy matrix in a Wheaton Liquid Scintillation Vial with energies from 88.0 keV to 1836.1 keV. The center of the detectors was position 64-feet from the vault floor. This position places the approximate center line of the detectors at the center line of the source in the thyroid tube. The calibration was performed using an RMC II phantom (Appendix J). Validation testing was performed using ... continued below

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Perry, Orval R. & Georgeson, David L. July 1, 2011.

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This report describes the March 2011 calibration of the Accuscan II HpGe In Vivo system for I-131 thyroid counting. The source used for the calibration was an Analytics mixed gamma source 82834-121 distributed in an epoxy matrix in a Wheaton Liquid Scintillation Vial with energies from 88.0 keV to 1836.1 keV. The center of the detectors was position 64-feet from the vault floor. This position places the approximate center line of the detectors at the center line of the source in the thyroid tube. The calibration was performed using an RMC II phantom (Appendix J). Validation testing was performed using a Ba-133 source and an ANSI N44.3 Phantom (Appendix I). This report includes an overview introduction and records for the energy/FWHM and efficiency calibrations including verification counting. The Accuscan II system was successfully calibrated for counting the thyroid for I-131 and verified in accordance with ANSI/HPS N13.30-1996 criteria.

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  • Report No.: INL/EXT-11-22507
  • Grant Number: DE-AC07-05ID14517
  • DOI: 10.2172/1042395 | External Link
  • Office of Scientific & Technical Information Report Number: 1042395
  • Archival Resource Key: ark:/67531/metadc846321

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  • July 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 22, 2016, 9:52 p.m.

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Perry, Orval R. & Georgeson, David L. Calibration of the Accuscan II In Vivo System for I-131 Thyroid Counting, report, July 1, 2011; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc846321/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.