Ophthalmic applicators: An overview of calibrations following the change to SI units
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705 (United States)
Since the NIST dose to water standard for {sup 90}Sr/{sup 90}Y ophthalmic applicators was introduced, numerous sources have undergone calibration either at NIST or at the University of Wisconsin Accredited Dosimetry Calibration Laboratory (UWADCL). From 1997 to 2008, 222 of these beta-emitting sources were calibrated at the UWADCL, and prior reference source strength values were available for 149 of these sources. A survey of UWADCL ophthalmic applicator calibrations is presented here, demonstrating an average discrepancy of -19% with a standard deviation of {+-}16% between prior reference values and the NIST-traceable UWADCL absorbed dose to water calibrations. Values ranged from -49% to +42%.
- OSTI ID:
- 22100490
- Journal Information:
- Medical Physics, Journal Name: Medical Physics Journal Issue: 5 Vol. 36; ISSN 0094-2405; ISSN MPHYA6
- Country of Publication:
- United States
- Language:
- English
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