RadReview Radiation Protection Practice Test 2026 - Free Radiation Protection Practice Questions and Study Guide

Filtration plays a vital role in radiation safety, particularly in the context of medical imaging and radiation therapy. Its primary purpose is to absorb low-energy photons, which contribute to patient dose without providing any diagnostic benefit. Low-energy photons are generally less penetrating and are more likely to be absorbed by the patient’s body, leading to unnecessary exposure to radiation. By using filtration, these photons can be removed, allowing only higher energy photons that are more effective for imaging or therapeutic purposes to pass through.

This reduction in patient dose is crucial for minimizing the potential harmful effects of radiation exposure, which is especially important considering the delicate balance of obtaining quality images while ensuring patient safety. Furthermore, effective filtration helps improve the quality of the resulting images by eliminating scatter that can result from these low-energy photons, therefore contributing indirectly to improved diagnostic accuracy without increasing radiation exposure.

In contrast, the other options do not accurately reflect the main purpose of filtration. While enhancing image quality can be one benefit of filtration, it is not the primary role. Similarly, increasing radiation exposure is against the principles of radiation safety, and absorption of high-energy photons does not align with the goals of reducing unnecessary radiation dose to the patient. Thus, option B clearly encapsulates the essence of filtration in radiation safety.