Estimate of the radiation source term for 18 F production via thick H 2 18 O targets bombarded with 18 MeV protons

Cruzate, Juan

doi:10.1016/j.radphyschem.2015.07.018

Cited by 7 publications

(1 citation statement)

References 5 publications

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“…Cyclotrons, due to their structure and the nature of their operation, represent considerable sources of exposure to ionizing radiation, both during operation and afterwards. During cyclotron operation, the personnel in the cyclotron control room are exposed to a mixture of neutrons and gamma radiation generated in nuclear reactions during isotope production [4][5][6][7][8][9]. In addition, due to the presence of radioisotopes formed in various parts of the cyclotron by nuclear activation by accelerated protons, gamma radiation continues to be emitted after the equipment is turned off [10][11][12][13][14][15][16][17] (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Exposure to ionizing radiation by service personnel working with cyclotrons used to produce radiopharmaceuticals in PET diagnostics

Biegała¹,

Jakubowska²,

Wrzesień³

et al. 2022

Int J Occup Med Environ Health

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Objectives: While working with cyclotrons used for the production of radiopharmaceuticals, workers can experience significant exposure to the adverse effects of ionizing radiation. The aim of this paper was to determine the typical level of such exposure received by such personnel while servicing cyclotrons. Material and Methods: Exposure was assessed using TLD detectors placed in an anthropomorphic phantom, as well as dose meter to determine whole body and eye lens exposure. The phantom was placed in locations receiving the greatest exposure to ionizing radiation during service activities. The time spent by employees during servicing was assessed based on routine visits by service technicians. The obtained results were compared with readings of detectors worn by employees during service activities. Results: The highest equivalent doses in the thoracic area were found to be received by the lungs (211.16 μSv/year). In the head and neck area, the highest dose was measured in the eye lens (3410 μSv/year). The effective dose for the whole body was found to be 1154.4 µSv/year, based on the phantom, and 149 µSv per service visit (1192 µSv/year), based on the dose meters carried by the workers. Conclusions: Service workers are exposed to significant doses of ionizing radiation, representing a clear radiological protection issue. To reduce exposure to eye lenses, it is recommended to use protective goggles when working with highly-radioactive elements.

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