Which of the following is used in the treatment of well differentiated thyroid cancer?
I 131 is used in the treatment of well differentiated thyroid cancer and hypehyroidism. I 131 has a half life of 8 days and emits beta paicles as well as gamma rays. Radiation dose to thyroid is mainly due to the emitted beta paicles (90%) rather than gamma radiation. Ref: Oncology for Health-Care Professionals By V. Pervan, Page 262; Radiation in Medicine: A Need for Regulatory Reform By U.S. Nuclear Regulatory Commission, Page 74
32 P
131 I
99mTc
131I-MIBG