Units of measurement
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Calculations
Roentgen (R)
Nanosievert (nSv)
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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.
Nanosievert (nSv)
Nanosievert (nSv) – unit of measurement for ionizing radiation dose, equal to one-billionth of a sievert (1 nSv = 0.000000001 Sv).