A performance comparison of Thermo Fisher EPD-MK2 and TLD (LiF:Mg,Cu,P) as part of accreditation proficiency testing |
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| Affiliation: | 1. Bureau of Medicine and Surgery, 7700 Arlington Avenue, Falls Church, VA 22042, USA;2. Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, USA;3. Naval Dosimetry Center, 8901 Wisconsin Avenue, Bethesda, MD 20889, USA;1. Radiotherapy Department of Stanislaw Leszczynski Memorial Hospital, Raciborska 27, 40-074 Katowice, Poland;2. Institute of Physics, Department of Nuclear Physics and Its Applications, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland;1. Department of Food and Nutrition, Seoul National University, Seoul, South Korea;2. Research Institute of Human Ecology, Seoul National University, Seoul, South Korea;1. Department of Internal Medicine and Medical Specialties, “Sapienza” University of Rome, 00161, Rome, Italy;2. Department of Health Sciences, “Magna Graecia” University of Catanzaro, 88100, Catanzaro, Italy;3. Institute of Medical Genetics, “S. Maria della Misericordia” University Hospital, 33100, Udine, Italy;1. Department of Virology, Toulouse University Hospital, Toulouse, France;2. Department of Physiopathology, Toulouse Purpan, Unité Inserm U563, Toulouse, France |
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| Abstract: | In this study we compared the proficiency testing performance of the Thermo Fisher active electronic personal dosimeter (EPD-Mk2) to the passive Thermoluminescent (TLD) dosimetry (LiF:Mg, Cu, P) in four testing categories as part of proficiency testing. One hundred and thirty two EPDs and comparable number of TLDs were submitted to Pacific Northwest National Laboratory (PNNL) and were subsequently irradiated with four categories of radiations in accordance with ANSI HPS 13.11-2009 criteria. The TLD performance was significantly better than EPDs in all categories. In addition, the EPD-Mk2 under responded in the accident category for M150 X-ray beam primarily due to the dose rate. The EPD-Mk2 was unable to respond to the exposure rate increase associated with accident category. The study showed that while the performance of EPD-Mk2 has improved to the point of passing ANSI HPS 13.11-2009, it requires that the user has a significant knowledge of the exposure scenario and radiation field. |
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| Keywords: | Proficiency EPD-MK2 TLD |
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