Which scenario is most appropriate to use a grid during a radiographic procedure?

• A. Skull Radiograph of an Infant
• B. Abdominal Radiograph on an Adult Patient
• C. Extremity Radiograph of a Finger
• D. Chest Radiograph of a Child

Answer: (B)

Using a grid is essential when imaging parts large enough that scatter would flood the image and reduce contrast. Scatter grows with thickness and field size, so a grid helps by absorbing much of that scattered radiation before it hits the detector, improving visibility of the internal structures. In an adult abdomen, the area is thick and produces a lot of scatter, making a grid the most appropriate choice to preserve image quality.

Small parts like a finger or the skull of an infant generate relatively little scatter, so a grid would add unnecessary dose and no added benefit. A chest radiograph in a child can often be done without a grid unless the patient is large enough that scatter becomes problematic.