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Effect of New Positron Radiopharmaceutical Shielding Equipment on Radiation Load Reduction of PET Centre Personnel.
MAŇASOVÁ, Olga
The bachelor thesis focuses on radiation protection of nuclear medicine personnel while using positron radiopharmaceuticals. The thesis is aimed at evaluating efficient and equivalent doses of PET centre personnel at Na Homolce Hospital where new shielding equipment with an activity dosing device was installed in 2006. Positron radiopharmaceuticals are characterized by emission of 2 annihilation gamma photons of high energy (511 keV) that are created upon interaction of a positron with an electron. Due to the high energies, radiological personnel receives higher radiation loads than upon application of common, particularly technecium-based radiopharmaceuticals used in nuclear medicine. The methodology consists in comparing efficient and equivalent doses before and after installation of the new shielding equipment. On base of results we can state that the doses to personnel were significantly reduced after installation of new shielding equipment. The doses were reduced by half during three years. New shielding is relevant from optimalization of radiation protection perspective. Statistical processing and graphic illustrations form part of the bachelor thesis.
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