The purpose of this review is to summarize the peer-reviewed literature in relation to sunlight exposure assessment and the validity of using sunlight exposure questionnaires to quantify vitamin D status. There is greater variability in personal ultraviolet (UV) light exposure as the result of personal behavior than as the result of ambient UV light exposure. Although statistically significant,...

INTRODUCTION As part of an initiative to improve control of doses, the recording of personal doses, and the accuracy of dose statistics, BNFL started a three year scheme in April 1996 to install the Siemens Electronic Personal Dosimetry (EPD) system into nine of its Magnox Reactor sites. Concurrent with the installation of the EPD systems, an ultimately successful application has been made to t...

The IAEA/RCA (Regional Cooperative Agreement) project to strengthen and harmonize radiation protection infrastructures in Asian and Pacific region started in 1988. The number of the RCA member countries is 17 at present. In the early stages of the project, there was little information on the status of radiation protection and their technical abilities of radiation protection measurements in RCA...

The ultimate check of the actual dose delivered to a patient in radiotherapy can only be achieved by using in vivo dosimetry. This work reports a pilot study to test the applicability of a thermoluminescent dosimetric system for performing in vivo entrance dose measurements in external photon beam radiotherapy. The measurements demonstrated the value of thermoluminescent dosimetry as a treatmen...

In order to supervise quality control and reliability of approved dosimetry services, the Spanish Nuclear Safety Council (CSN) organizes periodic national comparisons. The main results of the 2001 comparison organised by the CSN among 22 approved Personal Dosimetry Services are presented. All participants used TLD systems and measured Hp(10) and Hp(0.07). Irradiations were performed according t...

INTRODUCTION The angular dependency of response for TLD cards may cause deviation from its true value on the results of environmental dosimetry, since TLDs may be exposed to radiation at different angles of incidence from the surrounding area. OBJECTIVE A 3D setting of TLD cards has been calibrated isotropically in a standard radiation field to evaluate the improvement of the accuracy of meas...

R. Siddheswaran*, R.V. Mangalaraja*, Ricardo E. Avila, Maria Elena Gómez, D.Manikandan, Marta Lopez, C. Esther Jeyanthi and S. Ananthakumar Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion, Concepcion, Chile Personal Dosimetry Section, Chilean Commission of Nuclear Energy, Santiago, Chile Department of Physics, University of Valle, C...