Extremity Dose Equivalent refers to the external dose to which parts?

• A. Feet.
• B. Hands & forearms.
• C. Head.
• D. Back.

Answer: (B)

Extremity dose equivalent is about the external radiation dose that the ends of the limbs receive, with hands and forearms being the parts most commonly concerned in radiological work. When you handle sources or radioactive materials, your hands are closest to the radiation and are most likely to accumulate the highest exposure, so monitoring and protecting them is the primary focus. A ring or specialized extremity dosimeter is used to track this dose to keep it within allowed limits. While feet are also extremities, the standard monitoring emphasis is on hands and forearms because they typically receive the highest exposure during procedures. The head and back are not the parts described by this term.