ion123Ion 123. @Ion12313. hobi ngelantur dan suka bergaul. Translate bio. Joined September 2020. 14 Following · 1 Follower.Iodine-123 (123 I) is a radioactive isotope of iodine used in nuclear medicine imaging, including single-photon emission computed tomography (SPECT) or SPECTCT exams. The isotope's half-life is 13.2232 hours; [1] the decay by