What is the role of dosimeters in radiology safety?

• A. They monitor equipment temperature.
• B. They measure image quality.
• C. To monitor worker exposure and provide record; sometimes worn as collars; used for compliance.
• D. Not used for monitoring; only for imaging.

Answer: (C)

Dosimeters are personal radiation monitoring devices used to track how much ionizing radiation a worker is exposed to during their work. They provide a recorded dose for each person, which helps ensure exposures stay within regulatory limits and supports overall safety programs.

This is the best choice because it captures the core purpose: monitoring worker exposure and keeping a record for compliance. They’re commonly worn on the body, often as a collar badge, so the reading reflects the dose to the regions most exposed to scatter from diagnostic procedures. The dosimeter data can trigger safety actions—like reviewing shielding, staying time, or technique—to keep exposures ALARA (as low as reasonably achievable).

They are not intended to monitor equipment temperature, nor to measure image quality, and they aren’t used solely for imaging purposes. While some devices exist to assess imaging performance, dosimeters specifically measure the absorbed dose to people, which is why this option best fits radiology safety.