Which dose concept accounts for the type of radiation, the energy carried by the radiation, and how much tissue absorbs the energy, and is the product of absorbed dose and the radiation weighting factor?

Which dose concept accounts for the type of radiation, the energy carried by the radiation, and how much tissue absorbs the energy, and is the product of absorbed dose and the radiation weighting factor?

• A. Absorbed dose
• B. Equivalent dose
• C. Dose-area product
• D. Effective dose

Answer: (B)

Equivalent dose is the dose quantity that accounts for the type of radiation and the energy it carries by scaling the absorbed dose with a radiation weighting factor. It equals the absorbed dose to tissue multiplied by w_R, reflecting the biological effectiveness of the radiation. This means the same amount of energy deposited can be more biologically harmful for high-LET radiations than for low-LET radiations. Dose-area product and absorbed dose don’t incorporate radiation quality, while effective dose adds tissue sensitivity weighting across tissues.

Equivalent dose is the dose quantity that accounts for the type of radiation and the energy it carries by scaling the absorbed dose with a radiation weighting factor. It equals the absorbed dose to tissue multiplied by w_R, reflecting the biological effectiveness of the radiation. This means the same amount of energy deposited can be more biologically harmful for high-LET radiations than for low-LET radiations. Dose-area product and absorbed dose don’t incorporate radiation quality, while effective dose adds tissue sensitivity weighting across tissues.