The right SC joint and right side of the manubrium are superimposed by the thoracic vertebrae on a PA oblique sternum projection (RAO position). Such a projection is produced when the
A) patient rotation is less than the required amount.
B) patient rotation is more than the required amount.
C) patient is rotated into an LAO position.
D) central ray is centered too close to the vertebral column.

Question

Quizplus · Accepted Answer

The patient rotation being less than the required amount results in the right SC joint and right side of the manubrium being superimposed by the thoracic vertebrae in a PA oblique sternum projection (RAO position), as insufficient rotation prevents adequate separation of these structures from the spine.

The Right SC Joint and Right Side of the Manubrium