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  2. Orders of magnitude (radiation) - Wikipedia

    en.wikipedia.org/.../Orders_of_magnitude_(radiation)

    The following table includes some dosages for comparison purposes, using millisieverts (mSv) (one thousandth of a sievert). The concept of radiation hormesis is relevant to this table – radiation hormesis is a hypothesis stating that the effects of a given acute dose may differ from the effects of an equal fractionated dose. Thus 100 mSv is ...

  3. Sievert - Wikipedia

    en.wikipedia.org/wiki/Sievert

    mSv/a <100: nSv/h: Steady dose rates below 100 nSv/h are difficult to measure. [citation needed] 1: mSv/a (100: nSv/h avg) ICRP recommended maximum for external irradiation of the human body, excluding medical and occupational exposures. 2.4: mSv/a (270: nSv/h avg) Human exposure to natural background radiation, global average [a] (8: mSv/a ...

  4. Gray (unit) - Wikipedia

    en.wikipedia.org/wiki/Gray_(unit)

    In radiation therapy, the amount of radiation applied varies depending on the type and stage of cancer being treated. For curative cases, the typical dose for a solid epithelial tumor ranges from 60 to 80 Gy, while lymphomas are treated with 20 to 40 Gy.

  5. Radiation hormesis - Wikipedia

    en.wikipedia.org/wiki/Radiation_hormesis

    But for low doses (1–100 mSv) the predicted elevated risks are only 1.001 to 1.04 and excess cancer cases, if present, cannot be detected due to confounding factors, errors and biases. [21] [22] [23] In particular, variations in smoking prevalence or even accuracy in reporting smoking cause wide variation in excess cancer and measurement ...

  6. Rad (radiation unit) - Wikipedia

    en.wikipedia.org/wiki/Rad_(radiation_unit)

    A dose of under 100 rad will typically produce no immediate symptoms other than blood changes. A dose of 100 to 200 rad delivered to the entire body in less than a day may cause acute radiation syndrome (ARS), but is usually not fatal. Doses of 200 to 1,000 rad delivered in a few hours will cause serious illness, with poor prognosis at the ...

  7. Roentgen equivalent man - Wikipedia

    en.wikipedia.org/wiki/Roentgen_equivalent_man

    The ICRP recommends limiting artificial irradiation of the public to an average of 100 mrem (1 mSv) of effective dose per year, not including medical and occupational exposures. [10] For comparison, radiation levels inside the United States Capitol are 85 mrem/yr (0.85 mSv/yr), close to the regulatory limit, because of the uranium content of ...