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______ is the most common metal used as a filter in diagnostic radiology to remove soft x-rays from the polyenergetic/heterogeneous beam.

Which of the following procedures results in the lowest radiation effective dose to the patient?

Protons have a radiation weighting factor (WR) that is numerically equal to

The following are advantages of what personnel dosimeter?1. Instant access to reports by cellphone or USB uploads2. No waiting time for mailing dosimeters3. Lightweight and durable4. Can be dropped or scratched with little chance of harm to the device

A fluoroscopy system with automatic collimation must provide an unexposed border around the image at _____ above the table top.

10 gray equals

Which of the following are radiation-shielding design considerations?1. The mean energy of the x-rays that will strike the barrier2. Whether the barrier is of a primary or secondary nature3. The workload of the unit4. The use factor of the unit5. The brand of the control panel behind the barrier

When the sensing crystals contained in the TLD are exposed to ionizing radiation, which of the following occurs?

All of the following are late tissue reactions of ionizing radiation except

The fact that some types of radiation are more efficient at causing biologic damage than other types of radiation for a given dose is termed ?