Which of the following is used in the treatment of well differentiated thyroid cancer?
Correct Answer: 131 I
Description: 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
Category:
Radiology
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