What is the recommended patient position for a lateral projection, horizontal beam sinus radiograph?

• A. Standing
• B. Lying supine
• C. Prone
• D. Standing or sitting

Answer: (D)

For a lateral sinus radiograph with a horizontal beam, the patient should be upright—standing or sitting. An erect position lets gravity settle any fluid in the sinuses, making air–fluid levels more visible on the lateral view, which is a key diagnostic cue for sinus pathology. The horizontal beam is easiest to align when the patient is upright, and this position also provides a stable, natural alignment of the head for a true lateral. If standing isn’t possible, a seated position is acceptable; recumbent (lying down) positions can reduce the clarity of fluid levels and introduce more distortion, so they’re not preferred when an upright option is available.