Which unit is used to measure absorbed dose in tissue?

Which unit is used to measure absorbed dose in tissue?

• A. Gya
• B. Gys
• C. Gyb
• D. Gyt

Answer: (D)

Absorbed dose is energy deposited per unit mass, and the SI unit for this quantity is the gray (Gy), which is one joule per kilogram. When focusing on the dose specifically in tissue, the notation can be written as Gy_t (often shown as Gyt) to indicate tissue as the medium receiving the energy. So for a question asking the unit used to measure absorbed dose in tissue, Gyt is the appropriate designation because it explicitly names the tissue as the medium. Other forms with different subscripts would refer to dose in other materials (like air or bone) and don’t match the tissue context.

Absorbed dose is energy deposited per unit mass, and the SI unit for this quantity is the gray (Gy), which is one joule per kilogram. When focusing on the dose specifically in tissue, the notation can be written as Gy_t (often shown as Gyt) to indicate tissue as the medium receiving the energy. So for a question asking the unit used to measure absorbed dose in tissue, Gyt is the appropriate designation because it explicitly names the tissue as the medium. Other forms with different subscripts would refer to dose in other materials (like air or bone) and don’t match the tissue context.