Following the Statement on Tissue Reaction issued by the International Commission on Radiological Protection (ICRP), revisions and discussions are underway in various international organizations about the standards, guidelines and methods for the eye dosimetry. We have previously discussed these issues in six interim reports, followed by two addendum reports on lens dosimety. This addendum report reviews ongoing overseas discussion and work in relation to research on radiogenic cataracts and implementation of the new eye lens dose limit, such as those in the European Commission, Low Dose Research towards Multidisciplinary Integration (DoReMi), Open Project for European Radiation Research Area (OPERRA), and the Unite Sates National Council on Radiation Protection and Measurements (NCRP). This report serves as the last part of a series of reports by the Japan Health Physics Society Expert Committee on Radiation Protection of the Lens of the Eye.

Eye lens

Addendum

Interim

European commission

10.5453/jhps.50.262

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Field test of wide-range environmental neutron dosemeter using PADC

Progress in Nuclear Science and Technology (2011)

W. Shinozaki Daisuke Maki Hiroyuki Ohguchi Masashi Takada T. Nakamura

Environmental neutron dosemeter using PADC (Polly Allyl Di-glycol Carbonate) track detectors was tested in an actual neutron field.The dosemeter was set at a point in the radiation controlled area around the cyclotron facility of National Institute of Radiological Sciences (NIRS), together with the commercially available rem counter for comparison.For further validation of the dosemeter, the neutron spectrum at the point was measured by using Bonner ball counters inserting gold foil.The dosemeter showed the dose comparable to that estimated from the spectrum.The incident neutron direction was also estimated by detecting the slow neutrons from track densities on the PADC detectors.

10.15669/pnst.1.146

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Interim Report of the JHPS Expert Committee on Radiation Protection of the Lens of the Eye (Ⅲ)

Japanese Journal of Health Physics (2014)

Keiichi Akahane Takeshi Iimoto Takeshi Ichiji Satoshi Iwai Hiroyuki Ohguchi

Many studies have been internationally reported as part of projects regarding the radiation exposure for the lens of the eye of medical staff members under various conditions, methods of dosimetry and development of dosimeters for the lens of the eye. Recently conducted studies include the Retrospective Evaluation of Lens Injuries and Dose (RELID) of the International Atomic Energy Agency, Occupational Cataracts and Lens Opacities in interventional Cardiology (O’CLOC) study in France, Optimization of Radiation Protection of Medical Staff (ORAMED) project in European countries, and a 20-year prospective cohort study among US radiologic technologists. Given the newly implemented dose limit for the lens of the eye by the International Commission on Radiological Protection (ICRP), we summarized these studies as the necessary information for reconsideration of the Japanese dose limit for the lens of the eye. In addition, this article also covers the exposures for the lens of the eye of clean-up workers in the Chernobyl accident as shown in ICRP Publication 118 and the results of a hearing survey with specialists of the Academy of Medical Science of Ukraine.

Interim

Eye lens

10.5453/jhps.49.171

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