What is the role of legacy or supplementary dosimeters (e.g., neck or ring) in high-dose tasks?

• A. Are used to measure room temperature.
• B. Replace whole-body dosimeters for low-dose tasks.
• C. Provide extra monitoring for specific high-risk tasks; used to assess localized exposure beyond whole-body dose.
• D. Are unnecessary in radiology.

Answer: (C)

Supplementary dosimeters are used when a particular body region is at higher risk during a task. In high-dose procedures, parts such as the hands or neck can receive much more radiation than the rest of the body, so a ring or neck dosimeter provides direct information about that localized exposure. This helps ensure that skin or extremity dose limits aren’t exceeded and guides protective changes—like shielding, shorter exposure times, or procedural adjustments—to reduce risk. They work alongside the standard whole-body dosimeter rather than replacing it, and they’re specifically for monitoring areas that may be exposed more intensely in certain tasks.