Radiology staff dose assessment in primary health centers

Abstract

Cilj ovog rada je procena efektivnih doza radiološkog osoblja profesionalno izloženih jonizujućem zračenju u domovima zdravlja u Srbiji. Za procenu doza su primenjene dve metode: (1) merenje ambijentalnog ekvivalenta doze, H* (10), korišćenjem jonizacione komore; i (2) merenje ličnog ekvivalenta doze, Hp(10), korišćenjem termoluminescentnih dozimetara (TLD). Doze su procenjene za radiologe iz devet domova zdravlja koji rade iz kontrolisane zone zračenja i radiologe iz sedam domova zdravlja koji rade iz nadgledane zone zračenja. Godišnje doze su date za radiologe i radiološke tehničare za period od pet uzastopnih godina (2011-2015). Prosečna procenjena godišnja doza ne prelazi 12 mSv, na osnovu merenja H* (10), dok je 1,65 mSv maksimalna godišnja doza izmerena TLD metodom. Dobijeni rezultati pokazuju da doze osoblja ne prelaze zakonski predviđenu granicu godišnje doze od 20 mSv.The aim of this study is to estimate the effective doses to workers occupationally exposed to ionizing radiation in small health centers in Serbia. To assess doses two methods were applied: (1) the measurement of the ambient equivalent dose, H*(10) using ionization chambers routinely utilized during workplace monitoring; and (2) the measurement of the personal equivalent dose, Hp(10), using thermoluminescent dosemeters routinely utilized during individual monitoring. Doses were estimated for radiologist working from controlled and supervised area. Annual doses are given for for a period of five consecutive years (2011-2015). The average annual dose does not exceed 12 mSv assessed by the workplace monitoring method, or 1.65 mSv measured by the individual monitoring method. The results show that estimated doses are well below annual dose limits of 20 mSv for the occupational exposure