Amount of energy absorbed by an irradiated object is called what?

Amount of energy absorbed by an irradiated object is called what?

• A. Dose
• B. Dose rate
• C. Exposure
• D. Dose equivalent

Answer: (A)

Absorbed dose is the amount of energy deposited by ionizing radiation in a mass of material. It is measured in grays, where 1 Gy equals 1 joule of energy absorbed per kilogram of tissue. For a quick example, if 2 joules of energy are deposited in 1 kilogram of tissue, the absorbed dose is 2 Gy. Dose rate would tell you how fast that energy is being deposited (per unit time), not the total amount. Exposure refers to the ionization produced in air, not energy absorbed by the tissue. Dose equivalent adjusts the absorbed dose for biological effect using weighting factors, giving the sievert as the unit.

Absorbed dose is the amount of energy deposited by ionizing radiation in a mass of material. It is measured in grays, where 1 Gy equals 1 joule of energy absorbed per kilogram of tissue. For a quick example, if 2 joules of energy are deposited in 1 kilogram of tissue, the absorbed dose is 2 Gy. Dose rate would tell you how fast that energy is being deposited (per unit time), not the total amount. Exposure refers to the ionization produced in air, not energy absorbed by the tissue. Dose equivalent adjusts the absorbed dose for biological effect using weighting factors, giving the sievert as the unit.