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Type: Journal article
Title: Evaluation of physician eye lens doses during permanent seed implant brachytherapy for prostate cancer
Author: Penfold, S.
Marcu, L.
Lawson, J.
Asp, J.
Citation: Journal of Radiological Protection, 2012; 32(3):339-347
Publisher: Institute of Physics Publishing Ltd
Issue Date: 2012
ISSN: 0952-4746
Statement of
S.N. Penfold, L. Marcu, J.M. Lawson and J. Asp
Abstract: Treatment of low grade prostate cancer with permanent implant of radioactive seeds has become one of the most common brachytherapy procedures in use today. The implant procedure is usually performed with fluoroscopy image guidance to ensure that the seeds are deployed in the planned locations. In this situation the physician performing the transperineal implant is required to be close to the fluoroscopy unit and dose to the eye lens may be of concern. In 1991 the International Commission on Radiological Protection (ICRP) provided a recommended dose limit of 150 mSv yr1 for occupational exposures to the lens of the eye. With more long term follow-up data, this limit was revised in 2011 to 20 mSv yr1. With this revised limit in mind, we have investigated the dose to the lens of the eye received by physicians during prostate brachytherapy seed implantation. By making an approximation of annual workload, we have related the dose received to the annual background dose. Through clinical and phantom measurements with thermoluminescent dosimeters, it was found that the excess dose to the physician’s eye lens received for a conservative estimate of annual workload was never greater than 100% of the annual background dose.
Keywords: Lens, Crystalline; Humans; Prostatic Neoplasms; Iodine Radioisotopes; Radioisotopes; Fluoroscopy; Brachytherapy; Calibration; Monte Carlo Method; Radiation Dosage; Radiation Monitoring; Phantoms, Imaging; Occupational Exposure; Physicians; Male
Rights: © 2012 IOP Publishing Ltd
RMID: 0020121479
DOI: 10.1088/0952-4746/32/3/339
Appears in Collections:Chemistry and Physics publications

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