The traditional unit for absorbed dose is what?

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Multiple Choice

The traditional unit for absorbed dose is what?

Explanation:
Rad is the traditional unit for absorbed dose, which is the energy deposited in tissue per unit mass. It is defined as 0.01 joule per kilogram, so 1 rad equals 0.01 gray. The modern SI unit for the same quantity is gray (1 Gy = 1 J/kg). The other two units, rem and sievert, are used for dose equivalents that account for biological effect and tissue sensitivity, not the actual energy deposited. For photons, the numbers align with absorbed dose only when biological weighting is applied, but the unit that directly measures energy deposition is rad—the traditional value.

Rad is the traditional unit for absorbed dose, which is the energy deposited in tissue per unit mass. It is defined as 0.01 joule per kilogram, so 1 rad equals 0.01 gray. The modern SI unit for the same quantity is gray (1 Gy = 1 J/kg). The other two units, rem and sievert, are used for dose equivalents that account for biological effect and tissue sensitivity, not the actual energy deposited. For photons, the numbers align with absorbed dose only when biological weighting is applied, but the unit that directly measures energy deposition is rad—the traditional value.

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