Units of measurement
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Roentgen (R)
Microsievert (µSv)
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Information
Roentgen (R)
Röntgen (R) – unit of measurement for ionizing radiation dose, widely used before the introduction of the SI system but still used in some countries.
Microsievert (µSv)
Microsievert (µSv) – unit of measurement for ionizing radiation dose, equal to one-millionth of a sievert (1 µSv = 0.000001 Sv).