Milligray (mGy)
Milligray (mGy) :
A common unit of radiation dose equal to 0.001 gray, 0.1 rad, or 1 millijoule of energy per kilogram of matter. Because the gray itself is such a large unit, many practical radiation measurements are made in milligrays. In particular, the exposures cause by X-ray equipment are typically in the milligray range
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