Which combination of grids is recommended for pediatric radiography?

• A. Low ratio grid and stationary fine-line grid
• B. Low ratio grid and high ratio grid
• C. High ratio grid and stationary fine-line grid
• D. Low ratio grid, high ratio grid, and stationary fine-line grid

Answer: (A)

In pediatric radiography, the goal is to keep the dose as low as possible while still producing a clear, high-contrast image and avoiding artifacts from the imaging setup. Choosing a low ratio grid meets that goal because it provides enough scatter control for small patients without absorbing a large portion of the primary beam, so you can use lower exposure factors and still reach the detector with good contrast.

Pairing that with a stationary, fine-line (high-frequency) grid helps keep grid-related artifacts from detracting from the image. The fine lines are so close together that grid lines are less visible on the final image, even if the grid isn’t moving. A stationary configuration also avoids mechanical complexities and potential motion issues that can complicate pediatric exams.

Together, this combination minimizes patient dose, preserves image quality, and reduces the chance of grid artifacts, which is particularly important when imaging children who may not stay perfectly still.