Change in Body Dose of I-131 Radioisotope in Boys by Age

In nuclear medicine, the dose received by critical organs becomes important due to radioisotopes placed inside body. Medical applications are among main causes of radiation exposure general population. these applications, Computed Tomography (CT) scans primary source, while medicine is second largest. The informed decisions that must be made regarding use procedures require a better understanding absorbed and associated risks. this study, when iodine radioisotope I-131 inserted into thyroid gland boys aged 0, 1, 5, 10 15, change gland, thymus lymph nodes was investigated Monte Carlo based NCINM (National Cancer Institute Dosimetry System for Nuclear Medicine) code.