Ionizing radiation dose that accounts for the biological effect of various types of ionizing radiation on the organism. Measured in the SI unit sievert (Sv) and calculated from the absorbed dose in gray (Gy) multiplied by the radiation weight factor (w_R): H_T = Σ_R w_R · D_T,R. Its purpose is stochastic risk assessment, protection of workers and the public, dose monitoring, and setting radiation protection standards