Backscattered X-rays from the sample may pose what kind of concern?

• A. No risk
• B. Color change
• C. Magnetic interference
• D. Health risk

Answer: (D)

Backscatter radiation is a form of X-ray exposure that can reach the operator or others nearby. X-rays are ionizing radiation, so any radiation that scatters back toward you has the potential to contribute to occupational dose. Even with shielding and proper instrument design, some scattered X-rays can pose a health risk if exposure is not minimized, so safety measures are important and exposure should be kept as low as reasonably achievable.

Color change and magnetic interference aren’t related safety concerns from backscatter X-rays in this context, since X-ray photons don’t inherently cause color changes or magnetic effects in standard operating conditions. No risk is not the case here because there is a real exposure possibility that must be managed.