| dc.description.abstract | The International Commission on Radiological Protection decreased the annual eye
lens dose limit to 20 mSv in 2011 from the recommended value of 150 mSv in 2007
to reduce radiation-induced lens opacity in radiation workers in interventional
departments. Consequently, the newly recommended occupational eye lens dose
limit creates an interest to investigate the eye lens doses for interventional
cardiologists as they are more susceptible to radiation hazards, especially for eye
lenses. Therefore, the main aim of this study is to investigate the occupational eye
lens doses and determine the correlation between direct eye dosimetric values and
dose values obtained from supplementary dosimeters for interventional
cardiologists in Sri Lanka. 150 cardiac catheterization procedures were considered
in 1 month period. Two cardiologists were selected from the cardiac catheterization
laboratory to measure the eye lens doses. An ED3 eye dosimeter was placed near to
left eye for the direct reading of the eye lens dose. Hp(10) and Hp(0.07) dosimeters
were placed on the collar level outside the apron to assess the thyroid collar dose.
The annual effective doses to operators A and B were received as 8.6958 mSv/year
and 4.8361 mSv/year respectively. For each operator, the Pearson correlation
received good relationships between eye lens, Hp(10), and Hp(0.07) doses. This
study provided appropriate evidence to indicate the necessity of routine eye lens
dose measurement. The current study revealed the importance of supplementary
dosimeters to estimate the eye lens doses when dosemeters dedicated to eye lens
dose measurement are not available. | en_US |
