Edel: Enea Dosemeter for Eye Lens

Abstract

Since the publication of International Commission on Radiological Protection statement in 2011 on tissue reaction, eye lens radiation protection played an important role in exposed personnel dosimetry. For this reason, the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA) Individual Monitoring Service decided to study a prototype to fulfil specific requests (e.g. for survey in interventional department and intercomparisons). On the basis of such preliminary investigation, a new eye lens dosemeter was developed. The new dosemeter, named EDEL (ENEA Dosemeter for Eye Lens), was characterised in terms of Hp(3), the operational quantity related to eye lens monitoring. The investigation was performed experimentally and optimised using the Monte Carlo MCNP6 code. The new prototype was thought to fulfil two main requests: the reliability of the dosimetric data and the portability of the dosemeter itself. The new dosemeter will soon be supplied to the collaborating hospitals for workplace test measurements.

Occupational Exposure of the Eye Lens in Interventional Procedures: How to Assess and Manage Radiation Dose

“…Recently, several important initiatives were undertaken to develop eye lens dosemeters calibrated in terms of Hp (3). Generally they employ a thermoluminescent chip as passive dosemeter and some material covering it to mimic the necessary thickness to assure the coherence with the respective quantity definition [30,[32][33][34]. All these new devices should conform to suitable calibration procedures and type tests [29].…”

Development of a realistic 3D printed eye lens dosemeter using CAD integrated with Monte Carlo simulation

“…This 1.5 mm thick PTFE filter, with a density of 2.2 g cm −3 , was used, which is equivalent to 3.3 mm of soft tissue, closely matching the definition of the operational quantity Hp (3). Recently, Ferrari et al [11] proposed a new Hp(3) dosemeter (EDEL), optimized by using MCNP6 Monte Carlo simulations, as well as aluminum and polyamide layers in order to design the capsule and to achieve the appropriate filtration.…”

“…Efforts have currently been made for an international standardization of the calibration and the use of eye lens dosemeters by ISO 15382:2015 [11] and for the requirements for the design of the dosimetry systems by IEC 62387:2012 [12]. A new calibration phantom consisting of a water filled PMMA cylinder of 20 cm height, 20 cm diameter and with a 0.5 cm wall, was introduced by the ORAMED project and adopted by the ISO 4037-3:2019 [13].…”