Which SI unit is used for dose equivalent?

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Multiple Choice

Which SI unit is used for dose equivalent?

Dose equivalent reflects the biological impact of radiation by adjusting the absorbed energy in tissue (measured in grays) with a factor that accounts for the radiation type and tissue sensitivity. The unit that expresses this biologically weighted dose is the sievert. Gray is energy deposited per kilogram, which tells you how much energy is absorbed but not the biological risk. Roentgen is an older term for exposure in air, not the dose that relates to biological effects. Coulombs per kilogram is a measure of exposure/air kerma in SI, not dose equivalent. In diagnostic radiology, where the radiation is low-LET and the quality factor is about 1, 1 Gy is roughly equivalent to 1 Sv, but the unit used to express the dose that factors in biological effect is the sievert.

Dose equivalent reflects the biological impact of radiation by adjusting the absorbed energy in tissue (measured in grays) with a factor that accounts for the radiation type and tissue sensitivity. The unit that expresses this biologically weighted dose is the sievert. Gray is energy deposited per kilogram, which tells you how much energy is absorbed but not the biological risk. Roentgen is an older term for exposure in air, not the dose that relates to biological effects. Coulombs per kilogram is a measure of exposure/air kerma in SI, not dose equivalent. In diagnostic radiology, where the radiation is low-LET and the quality factor is about 1, 1 Gy is roughly equivalent to 1 Sv, but the unit used to express the dose that factors in biological effect is the sievert.

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