To reduce radiation exposure in diagnostic imaging, which steps are recommended?

• A. Use Lead Shielding
• B. Minimize Exposure Time
• C. Maximize Distance
• D. All of the Above

Answer: (D)

To keep radiation exposure as low as reasonably achievable in diagnostic imaging, you rely on the time-distance-shielding approach. Each step reduces dose in a different way, and using them together provides the strongest protection. Lead shielding protects sensitive tissues from scatter and stray radiation when appropriate. Shortening the exposure time lowers the amount of radiation delivered because dose is proportional to time. Increasing distance from the source dramatically reduces dose due to the inverse-square law. Because these measures address different parts of the exposure pathway, applying all of them is the best practice: use shielding, minimize exposure time, and maximize distance whenever feasible.