Sarihan, MucizeAbamor, EvrimRadyoterapi / Radiotherapy2024-05-252024-05-25202202391-547110.1515/phys-2022-02112-s2.0-85142188970https://doi.org/10.1515/phys-2022-0211https://hdl.handle.net/20.500.14517/959Radiation has been used in a variety of different fields since its discovery. It is very important in medial sector for both diagnosis and also for treatment. In this study, the radiation dose rate emitted to the environment after radiopharmaceutical injection was determined using patients undergoing bone scintigraphy imaging. Radiation dose rate measurements were performed at different distances from the patient and at different levels of the patient. Measurements were done at different times to determine the relationship between radiation dose rate and time. The radiation dose rate emitted by the patient was measured after an average of 10.21, 42.36, and 76.28 min of injection. In order to see the relationship between radiation dose rate and distance, measurements were done at 25, 50, 100, and 200 cm distance from the patient. The measured average radiation dose rate at 1 m distance from the patients' chest level and 10.21 min after radiopharmaceutical injection was 16.27 mu Sv h(-1). Then, the average radiation dose rate decayed down to 13.65 mu Sv h(-1) after 42.36 min, while the measured average radiation dose rate after 76.28 min was lower as 12.41 mu Sv h(-1) at 100 cm from patient's chest level.eninfo:eu-repo/semantics/openAccessTc99mscintigraphyradiation dosehospital managementArticleQ3Q220111761184WOS:000879997000001