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Accession Number
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DE2012-1042395
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Title
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Calibration of the Accuscan II In Vivo System for I=131 Thyroid Counting.
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Publication Date
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Jul 2011
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Media Count
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107p
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Personal Author
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O. R. Perry
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Abstract
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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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Keywords
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Accuscan II
Calibration
Dosimetry
In vivo
Iodine-131
Measuring instrument
Phantoms
Thyroid
Validation
Verification
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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57V - Radiobiology
77E - Nuclear Instrumentation
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Corporate Author
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Idaho National Laboratory, Idaho Falls, ID. Health Physics Dosimetry Lab.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1226
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Contract Number
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DE-AC07-05ID14517
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