The Extremity Dosimeter is used to evaluate exposure to which area?

The Extremity Dosimeter is used to evaluate exposure to which area?

• A. Hand and forearm
• B. Head
• C. Chest
• D. Abdomen

Answer: (A)

Extremity dosimeters are used because the hands and forearms can receive much higher skin doses than the rest of the body during procedures that involve direct handling of radioactive sources or close proximity to X-ray beams. Monitoring the extremities helps ensure that skin dose limits are not exceeded and guides appropriate protective measures, such as using lead gloves or minimizing exposure time. The chest or torso dosimeter assesses whole-body exposure, which isn’t representative of the dose the hands may receive in many procedures. Head or abdomen dosimetry is used in different contexts, but for tracking exposure to the areas most at risk from manipulation of sources, the extremities—hands and forearms—are what the extremity dosimeter measures.

Extremity dosimeters are used because the hands and forearms can receive much higher skin doses than the rest of the body during procedures that involve direct handling of radioactive sources or close proximity to X-ray beams. Monitoring the extremities helps ensure that skin dose limits are not exceeded and guides appropriate protective measures, such as using lead gloves or minimizing exposure time.

The chest or torso dosimeter assesses whole-body exposure, which isn’t representative of the dose the hands may receive in many procedures. Head or abdomen dosimetry is used in different contexts, but for tracking exposure to the areas most at risk from manipulation of sources, the extremities—hands and forearms—are what the extremity dosimeter measures.