HOSA Dental Terminology Practice

What device is used to measure stray or secondary radiation?

1. Phantom

2. Dosimeter

3. Lead Barrier

4. Radiation Counter

The correct answer is: Dosimeter

The dosimeter is a device specifically designed to measure the amount of radiation exposure, including stray or secondary radiation. It functions by detecting and recording the levels of ionizing radiation that the user or environment is exposed to over time. Dosimeters are crucial in environments where there is potential exposure to radiation, as they provide a way to monitor and ensure safety by recording cumulative exposure levels. This is especially important in dental and medical settings where various imaging techniques are used, as they help to protect both patients and healthcare workers from unnecessary radiation exposure. In contrast, a phantom is typically used in imaging to simulate human tissue for calibration or testing, while a lead barrier serves primarily as a protective measure to shield individuals from direct radiation rather than measuring it. A radiation counter is more often used for detecting and counting radiation events rather than providing a detailed personal exposure history as dosimeters do.