Effect of I-131 Radioisotope Activities on Organ Dose Used in Nuclear Medicine

There are many ways to be exposed radiation in life. Medical applications, particular, the most important form of severe exposure. In medical Computed Tomography (CT) scans first place, while nuclear medicine is second place. Of course, dose absorbed by tissue and therefore organs directly proportional risks health. medicine, due radioisotopes placed body for therapeutic purposes, some doses not given only organ and/or tissues where tumor placed, but also other surrounding tissues. this study, change received thyroid gland, thymus, lymph nodes according activities iodine radioisotope I-131 gland adult phantoms (both male female) were investigated with Monte Carlo-based code.