Shallow Dose Equivalent measures external exposure to skin at approximately what depth?

Shallow Dose Equivalent measures external exposure to skin at approximately what depth?

• A. The dead layer of skin.
• B. Dermis.
• C. Subcutaneous tissue.
• D. Muscle.

Answer: (A)

Shallow Dose Equivalent assesses the dose to the skin at a very shallow depth, specifically the outer dead layer of the epidermis. This depth is about 0.007 cm (roughly 7 mg/cm^2), which corresponds to the region where many beta particles deposit energy and where skin effects are evaluated. So the measurement targets the dead layer of skin rather than deeper tissues like the dermis, subcutaneous tissue, or muscle.

Shallow Dose Equivalent assesses the dose to the skin at a very shallow depth, specifically the outer dead layer of the epidermis. This depth is about 0.007 cm (roughly 7 mg/cm^2), which corresponds to the region where many beta particles deposit energy and where skin effects are evaluated. So the measurement targets the dead layer of skin rather than deeper tissues like the dermis, subcutaneous tissue, or muscle.