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SU‐FF‐I‐80: Evaluation of Dose Rate of Occupational Exposure in Nuclear Medicine Service
Author(s) -
Schwarcke M,
Marques T,
Nicolucci P,
Cardoso D,
Ferreira N
Publication year - 2009
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.3181200
Subject(s) - nuclear medicine , medicine , protocol (science) , dose rate , scintigraphy , radiation exposure , dosimetry , radionuclide , medical physics , physics , pathology , nuclear physics , alternative medicine
Purpose: Characterize the value of dose rate received by the nuclear medicine professionals during the examination procedure and handling of radiopharmaceuticals, permiting the realization of more specific pratices of radioprotection in nuclear medicine. Method and Materials: For this work was monitoring two professional in two separate nuclear medicine services, totaling four profissionals monitoring during two moths. Their routine was not modified. The measuring of the rate dose was made with an ionization chamber model Babyline 81 at a distance of 1.0 m from the source. The measurements were made during the eluation of radioisotope, preparation the radiopharmaceuticals, in the administration and during the exam realization. The value of the rate dose was associated the procedure realized, for this way to caracterize the level of exposure that the professional it was sudmitted during your daily work. Results: It was observed for the test of renal scintigraphy with DTPA an average of 2.55 μGy/h and an average value of 1.20 μGy/h to DMSA. For examinations of bone scintigraphy with MDP was observed an average of 2.63 μGy/h for the protocol of time and 3.09 μGy/h for the protocol of counting, the difference in protocol is due to different interpretation medical. The bone flow scintigraphy the average rate dose was 5.17 μGy/h. The values of the background radiation measured over the handling of radiopharmaceuticals shows a maximum increase of up to six times the background radiation before manipulation and this value influence the measurements performed by measuring activity. Conclusion: The evaluation of the values of dose rate may help in taking action directed to optimizing the radioprotection and minimize the sum of errors during a correct administered radiopharmaceutical to the patient, minimizing the dose in the pacient and in the professional.