Biological dose units : Sv, mSv

The sievert or Sv is the unit used to measure the biological doses which are the most significant for a living being: : effective dose, equivalent dose, committed dose …. The sievert being a somewhat large unit, the doses are generally expressed in thousandth of a sievert (millisievert or mSv)., The annual effective dose to which people are exposed In Europe is of 4 mSv per person on average. The sievert replace a former unit, the rem : 1 Sv = 100 rem.