Epilation (hair loss) is possible due to radiation exposure after receiving what threshold dose?

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Multiple Choice

Epilation (hair loss) is possible due to radiation exposure after receiving what threshold dose?

Explanation:
Hair loss from radiation is a deterministic effect, meaning it only happens once a certain local dose is exceeded. For the scalp, damaging enough hair follicles to cause epilation requires a fairly high absorbed dose—on the order of several grays. That translates to thousands of milligrays. Among the given options, only the high-dose category reaches that level, so it’s the one that would plausibly produce epilation. The smaller dose options are well below the threshold and would not typically cause hair loss.

Hair loss from radiation is a deterministic effect, meaning it only happens once a certain local dose is exceeded. For the scalp, damaging enough hair follicles to cause epilation requires a fairly high absorbed dose—on the order of several grays. That translates to thousands of milligrays. Among the given options, only the high-dose category reaches that level, so it’s the one that would plausibly produce epilation. The smaller dose options are well below the threshold and would not typically cause hair loss.

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