Assessment of 99mTc Dose Calibrator Performance in Nuclear Medicine Department

Nuclear medicine uses many different radioactive isotopes for radiation diagnostics and for therapy. The amount of radioactivity has to be determined exactly before it is applied to a patient. The Dose calibrators have to measure the radioactivity of gamma and beta with different energies precisely for high quality imaging and for applying the right amount of radiation to treat disease. This study was carried out to assess the performance of dose calibrators which work in nuclear medicine departments in Khartoum state. Two departments were included in this study, Radiation and isotopes center of Khartoum (RICK) and Elnileen medical diagnostic center. Four quality control tests were carried out using two standard Radionuclides, 137Cs and 57Co, which were accuracy, constancy, linearity and geometry. All results that obtained from the study has been compared with the international standard (5 %) and the results showed that all dose calibrators has good performance and there is no need for any correction tables or factors or maintenance.