A lateral cervical vertebral projection demonstrating the right and left articular pillars and zygapophyseal joints with superoinferior separation, the inferior cortices of the cranium and mandible without superimposition, and the vertebral foramen of C1 was obtained with the
A) torso and cervical vertebrae rotated from a lateral position.
B) head and upper cervical vertebrae tilted toward the IR.
C) head and upper cervical vertebrae tilted away from the IR.
D) chin elevated.

Question

Quizplus · Accepted Answer

To demonstrate the right and left articular pillars and zygapophyseal joints with superoinferior separation, the head and upper cervical vertebrae must be tilted toward the IR. The inferior cortices of the cranium and mandible without superimposition are obtained with this projection as well. The vertebral foramen of C1 is visualized due to the superoinferior separation of the joints. The option A would cause the torso and cervical vertebrae to be rotated, which would not be effective in demonstrating the structures of interest. The option C would cause the structures of interest to be superimposed. The option D would not affect the visualization of the structures of interest.

A Lateral Cervical Vertebral Projection Demonstrating the Right and Left