99mTc-pertehnetat is useful for treatment accompanied by information on dosing to the human body. This study aims to determine the estimated dose of 99mTc Pertehnetat radiopharmaceutical in children aged 1-15 years. This research method was carried out based on the mice biodistribution test with time intervals of 0.5, 1, 3, 5, 24 hours after radiopharmaceutical injection. From the biodistributi…