Journal
RADIATION PROTECTION DOSIMETRY
Volume 101, Issue 1-4, Pages 229-232Publisher
NUCLEAR TECHNOLOGY PUBL
DOI: 10.1093/oxfordjournals.rpd.a005973
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As a result of the gamma radiation emitted by radioactive elements (e.g. Tc-99m and I-131) used in nuclear medicine laboratories for diagnostic and therapeutic purposes, nuclear medicine workers are exposed to whole-body doses. These doses are usually measured by using individual film dosemeters. Lead or lead glass shields used during the handling of radioisotopes minimise the whole-body doses received. Nevertheless, part of the job has to be performed manually, hence the hands are more exposed to radiation. This paper presents the results of measuring the equivalent dose to the hands of workers employed in five selected nuclear medicine laboratories where technetium and iodine radioisotopes are in common use. Sixty workers, including physicians, nurses, radiopharniacists and technicians, were included in the study. Doses were measured at I month intervals. The stud indicated that, in some instances, the danger of radiation dose to the hand may be significant. Monthly doses exceeded 50 mSv, which may suggest that an annual dose may be higher than 500 mSv.
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