Radiation Protection Dosimetry 82:93-103 (1999)
© 1999 Oxford University Press
Dosimetry of Occupationally Exposed Persons in Diagnostic and Interventional Arteriography. Part 1: Assessment of Entrance Doses
The purpose of this study was to obtain representative quantitative information on exposure conditions and entrance doses of occupationally exposed persons (workers) in diagnostic and interventional arteriography. In a study in three hospitals all parameters of the X ray systems that are related to the exposure of workers were quantified with an automatic data acquisition system. Using LiF thermoluminescence dosemeters, entrance doses to workers were measured at the forehead, neck, thorax, abdomen, upper arms, hands and lower legs. Measurements were performed during 353 procedures, and it was found that exposure of workers was predominantly caused by fluoroscopy. Averaged over all procedures in the annual workload, entrance doses were below 120 µGy when an undercouch X ray tube and a mechanical contrast injector were used. For an overcouch tube the doses were higher. It is concluded that entrance doses are low, and that legally established annual dose limits are un-likely to be exceeded.
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