Which practice is recommended for pediatric spine imaging to minimize dose while preserving diagnostic quality?

• A. Use high-dose protocols for better image quality.
• B. Exceed size-appropriate exposure with no shielding.
• C. Minimize repeats and use size-appropriate exposure.
• D. Skip immobilization to reduce patient discomfort.

Answer: (C)

In pediatric spine imaging, the aim is to keep radiation dose as low as possible while still getting a diagnostic-quality image. The best approach is to tailor the exposure to the child’s size and to minimize the need for repeat examinations. Size-appropriate exposure means using technique factors (kVp and mAs) that match the child’s small anatomy so the image is adequately penetrated without overexposure. Minimizing repeats is crucial because retakes add dose, and children are more sensitive to radiation and have a longer lifetime risk. When you optimize exposure for size and prevent motion-related repeats with good positioning and, when needed, immobilization, you preserve diagnostic quality without unnecessary dose.

The other choices would either raise the dose (high-dose protocols), or risk unnecessary exposure (exceeding size-appropriate exposure with no shielding), or worsen image quality by allowing motion (skipping immobilization).