"Taken 6-12 hours before exposure to radioactive iodine, KI fills the thyroid cells and prevents the gland from absorbing radioactive iodine. KI is also protective if taken within the first few hours after exposure to radioactive iodine. People should take one dose a day, only while they are being exposed to radioactive iodine and one day afterward. KI should be used only under instruction from local health authorities. Not every radioactive release includes the radioactive iodine that can cause thyroid cancer. For example, a 'dirty bomb' is not likely to contain radioactive iodine because it has a short half-life. (A 'dirty bomb' is a conventional bomb mixed with radioactive material, and designed to explode spewing out the radioactive isotopes and contaminating a wide area.) Only health authorities can determine which radioactive isotopes are released during a nuclear event, and, if radioactive iodine is released, when to take KI and how long to keep taking it."
Saturday, March 12, 2011
On Iodine
Thyroid.org: Questions and Answers about Potassium Iodide (KI):
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