Lens of the eye dosimetry means individual dosimetric monitoring with Harshaw thermoluminescent dosimeters to measure Hp(3). This is currently a hot topic, because epidemiological studies have shown an increased incidence of cataract cases in occupationally exposed individuals who work in interventional radiology/cardiology.
The results of the experimental studies conducted in Romania by our laboratory in collaboration with exposed individuals working in interventional cardiology laboratories may be read here.
Under the circumstances of a drastic reduction in the maximum dose limit for the lens of the eye from 150 mSv/year to 20 mSv/year (DIRECTIVE 2013/59/EURATOM OF THE COUNCIL of 5 December 2014 establishing basic safety standards), the dosimetric monitoring of the lens of the eye becomes a highly topical issue, particularly for occupationally exposed individuals in interventional radiology/cardiology.
Traceability of measurements is ensured by calibration of Harshaw thermoluminescent dosimetric system within SSDL laboratory of the Czech Metrology Institute.
The dosimetric lens monitoring services with Harshaw thermoluminescent dosimeters include:
-Monthly shipment of lens of the eye dosimeters, before the 1st of each month
-Interpretation of the thermoluminescent signal, measurement and reporting of Hp(3). Availability of results: 2-5 working days from receiving the dosimeters worn, through RepDoz online database
-Issuance of dosimeter bulletins, warning reports when the monthly derived limit is exceeded, annual reports containing the cumulated dose for the previous calendar year
-Online access to monitoring results and visualization of dose history
Need and advantages of using Harshaw thermoluminescent dosimeters for the lens of the eye:
-Strong recommendation for monitoring individuals working in IR/IC interventional radiology/cardiology
-Modern technology, detectors made of tissue-equivalent material
-Wearing of up to 3 detectors on the badge in case of non-uniform radiation fields.