[Positron emission tomography and radiation exposure].
With the ever increasing number of PET-systems in operation the associated problems of radiation protection gain increasing significance. Compared to "conventional" nuclear medicine there is a need for better shielding since the production of positron emitters also yields neutrons and secondary gamma radiation. Due to the short half-lives involved the radiochemistry has to handle high initial activities. Moreover the 511 keV energy of the positron-emitters results in the vicinity of the patient in a higher exposure rate than other nuclear medicine isotopes. For these reasons the typical effective dose to cyclotron personnel is about 2 mSv per year. The whole-body dose to the radiochemists is reported to be 0-20 microSv per charge, and to the medical personnel 10-50 microSv per application. The radiation exposures of the patients are comparable to those common in "conventional" nuclear medicine.
Schober
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O
Klinik und Poliklinik für Nuklear-medizin, Westfälische Wilhelms-Universität Münster, FRG.
Lottes
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G
D005720:Gamma Rays; D006207:Half-Life; D006801:Humans; D009502:Neutrons; D009683:Nuclear Medicine; D016273:Occupational Exposure / Q000517:prevention & control; D011835:Radiation Protection; D014055:Tomography, Emission-Computed / Q000592:standards
Positronen-Emissionstomographie und Strahlenexposition.