Dose equivalent (H_T )

Dose equivalent (H_T ) – The product of the absorbed dose in tissue (D_T ) and the quality factor (Q), and all other necessary modifying factors at the location of interest where H_T = D_T Q.  The units of dose equivalent are the rem and sievert (Sv). (0.01 Sv = 1 rem).  The dose equivalent in Sv is equal to the absorbed dose in grays multiplied by the Q; 1 Sv = 100 rem.  Its purpose is to have a single unit, regardless of the type of radiation, describing the radiation effect on man.  See also Deep Dose Equivalent, Eye-Dose Equivalent, and Shallow-Dose Equivalent