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Record radiation levels were found in a house where the effective dose due to ambient radiation fields was 131 mSv (13.1 rem) per year, and the internal committed dose from radon was 72 mSv (7.2 rem) per year. [28] This unique case is over 80 times higher than the world average natural human exposure to radiation.
Dose equivalent calculates the effect of radiation on human tissue. [4] This is done using tissue weighting factor, which takes into account how each tissue in the body has different sensitivity to radiation. [4] The effective dose is the risk of radiation averaged over the entire body. [4] Ionizing radiation is known to cause cancer in humans. [4]
Background radiation level is widely used in radiological health fields as a standard for setting exposure limits. [1] Presumably, a dose of radiation which is equivalent to what a person would receive in a few days of ordinary life will not increase their rate of disease measurably.
Human internal radiation due to radon, varies with radon levels [8] 2 2 × 10 ^ 0: Acute-Head CT [7] 3 3 × 10 ^ 0: Annual: 0.34: USA average dose from all natural sources [6] 3.66 3.66 × 10 ^ 0: Annual: 0.42: USA average from all sources, including medical diagnostic radiation doses [citation needed] 4 4 × 10 ^ 0: Duration of the pregnancy: 0.6
The various approaches to setting acceptable levels of radiation risk are summarized below: [14] Comparison of radiation doses - includes the amount detected on the trip from Earth to Mars by the RAD on the MSL (2011 - 2013). [15] [16] [17] [18]
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English: Radiation Dose Chart by Randall Munroe as part of the webcomic xkcd (SVG version of ). In response to concerns about the radioactivity released by the Fukushima Daiichi nuclear disaster:Fukushima Daiichi nuclear disaster in 2011, and to remedy what he described as "confusing" reporting on radiation levels in the media, Munroe created a chart of comparative radiation exposure levels.
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