Evaluation of exposure to ionizing radiation of medical staff performing procedures with glucose labeled with radioactive fluorine-18F-FDG

Employees of nuclear medicine facilities performing medical procedures with the use of open radioactive sources require continuous detailed control of exposure to ionizing radiation. Thermoluminescent (TL) detectors placed in dosimeters: for the whole body, for lenses, ring and wrist dosimeters were used to assess exposure. The highest whole -body exposure of (1.70 +/- 1.09) mu Sv/GBq was recorded in nurses administering radiopharmaceutical to patients. The highest exposure to lenses and fingers was recorded for employees of the quality control zone and it was (8.08 +/- 2.84) mu Sv/GBq and a maximum of (1261.46 +/- 338.93) mu Sv/GBq, respectively. Workers in the production zone received the highest doses on their hands, i.e. (175.67 +/- 13.25) mu Sv/GBq. The measurements performed showed that the analyzed workers may be classified as exposure category A. Wrist dosimeters are not recommended for use in isotope laboratories due to underestimation of ionizing radiation doses. Appropriately selected shields, which significantly reduce the dose received by employees, must be used in isotope laboratories. Periodic measurements confirmed that the appropriate optimization of exposure reduces the radiation doses received by employees.