Gray(t) represents the unit used to express absorbed dose in

Gray(t) represents the unit used to express absorbed dose in

• A. Absorbed dose in tissue
• B. Absorbed dose in air
• C. Equivalent dose
• D. Activity

Answer: (A)

Absorbed dose is the energy deposited by ionizing radiation per unit mass. The gray is the unit for this quantity, defined as one joule per kilogram. When you see a subscript t on gray, it designates tissue, signaling that the energy deposition being described is in tissue. This distinction matters because in radiography we quantify the dose tissues receive to assess patient exposure. Other quantities use different units: equivalent and effective dose are measured in sieverts (they include weighting factors for radiation type and tissue sensitivity), and activity is measured in becquerels (a rate of nuclear decay). So gray_t specifically expresses the absorbed dose in tissue.

Absorbed dose is the energy deposited by ionizing radiation per unit mass. The gray is the unit for this quantity, defined as one joule per kilogram. When you see a subscript t on gray, it designates tissue, signaling that the energy deposition being described is in tissue. This distinction matters because in radiography we quantify the dose tissues receive to assess patient exposure. Other quantities use different units: equivalent and effective dose are measured in sieverts (they include weighting factors for radiation type and tissue sensitivity), and activity is measured in becquerels (a rate of nuclear decay). So gray_t specifically expresses the absorbed dose in tissue.