An x-ray system with unreliable exposure reproducibility may result in which adverse effect?

• A. Unnecessary patient dose
• B. Unacceptable spatial resolution
• C. Inadequate receptor exposure
• D. Increased image noise

Answer: (A)

When exposure reproducibility is unreliable, you can’t rely on the same technique to produce the same receptor exposure each time. This means some images may come out underexposed and others overexposed. To ensure the image meets diagnostic standards, a radiographer may need to repeat exams or increase exposure to try to achieve acceptable density and contrast. Those additional exposures add radiation to the patient, leading to unnecessary patient dose.

Unacceptable spatial resolution is more about the imaging system’s geometric factors and sharpness, not the ability to reproduce exposure levels. Inadequate receptor exposure is a problem tied to exposure levels, but the key issue with poor reproducibility is the need for extra exposure or repeats, which raises dose. Increased image noise can occur if exposures are inconsistent, but the main adverse effect tied to unreliability is the extra dose from repeats.