Caldwell's view

Caldwell's view (or Occipitofrontal view) is a radiographic view of the skull where the X-ray plate is perpendicular to the orbitomeatal line.

The rays pass from behind the head and are angled at 15-20° to the radiographic plate.

It is commonly used to get better view of the ethmoid and frontal sinuses.

[1] It is named after the noted American radiologist Eugene W. Caldwell, who described it in 1907.

[2][3]