Why is it important to remove low-energy X-rays in filtration?

The importance of removing low-energy X-rays through filtration primarily lies in reducing patient exposure to radiation. Low-energy X-rays do not contribute significantly to image quality, as they are more likely to be absorbed by the patient's tissues rather than penetrate them. By filtering these low-energy rays out, the overall radiation dose that the patient receives during imaging procedures is minimized without compromising the diagnostic information provided by the higher-energy X-rays that remain. This practice aligns with the principle of ALARA (As Low As Reasonably Achievable), which aims to keep radiation exposure as low as possible while still obtaining the necessary diagnostic information. The other options focus on aspects of imaging efficacy or process efficiency, but they do not address the critical concern of patient safety as effectively as reducing radiation exposure.