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Head and Neck Cancers • Radiation Oncology
How do you account for previous dose from I-131 when delivering external beam radiation therapy near the thyroid bed?
Answer from: Radiation Oncologist at Academic Institution
Since I-131 is selectively taken up by thyroid cancer cells and the range of beta particles emitted is 1-2 mm, there should not be any big concerns of overdosing OARs.
https://ehs.stanford.edu/reference/i-131-radionuclide-fact-sheet
http://www.docs.csg.ed.ac.uk/Safety/rpu/gn/GN009.pdf.
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