Is it really not possible to use electronic personal dosimeters in clinical exposure situations?

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
M BorowskiH von Boetticher

Abstract

Due to significant measuring inaccuracies that can occur under certain conditions, the use of electronic personal dosimeters in statutory measurements in X-ray diagnostics is currently legally restricted. The present study investigates the clinically relevant situations in which measurement errors of more then 20 % can be anticipated. Four series of experiments were made, comparing the results of the electronic personal dosimeter EPD Mk2.3 to those of reference dosimeters (TLDs and diagnostic dosimeters). On the one hand, personal doses have been determined in the routine operation of controlled areas in various departments. On the other hand, measurements on phantoms have been conducted in extreme but realistic situations under radiation protection. Experiments were conducted in unweakened scattered radiation as well as in unattenuated and attenuated direct radiation. The tested electronic personal dosimeter type meets the requirements regarding measurement accuracy for "official" personal dosimeters in all of the examined clinically relevant scattered radiation fields. Only if exposed to radiation directly, an underestimation of the dose can occur and can be greater than 90 %. In the range of scattered radiation of diagnostic...Continue Reading

Citations

Nov 1, 2011·Medizinische Klinik, Intensivmedizin und Notfallmedizin·M BeerJ Wirbelauer
Dec 16, 2011·Radiation Protection Dosimetry·Nadja LönnrothMika Kortesniemi

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