Medical Dictionary

Medical Dictionary

Posted by Safe In4 Hub


A metric unit of the amount of radiation absorbed by biological material. One sievert (Sv) equals 1 joule (J) of energy absorbed per kilogram of matter (1 J/kg) and is adjusted for the type of biological material that is affected. For human tissues, 1 Sv equals 1 gray (Gy). There are 1000 millisieverts (mSv) in 1 sievert (Sv). Radiation therapy doses may be described by the number of millisieverts (mSv) to be delivered during each treatment.

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