Exposition aux rayonnements ionisants des personnels médicaux: Pour une catégorisation et une surveillance dosimétrique rationnelles

Abstract

Currently, the radiation exposure of the huge majority of radiologic staff in radiology or nuclear medicine departments is very low. These workers are no longer in the "A category" of the French regulations, which implies annual exposure ranged from 6 to 20 mSv. Most workers of the staff would be categorized into B category (annual exposure ranged from 1 to 6 mSv). In radiology departments, only the interventional radiologists must be categorized "A" and in nuclear medicine department, only the technicians regularly assigned to injection of radiopharmaceuticals must be categorized "A". The modification of the categorization from "B" to "A" provides a best dosimetric monitoring: the electronic dosimeters are allocated to a few, really exposed, workers, while passive, three-month-read dosimeters record the very low exposures of the majority of workers. A dosimetric survey of each post, working out the maximal exposure of a permanent worker at this post is the prerequisite of the establishment of this categorization. © 2004 EDP Sciences.