For a left lateral chest projection with accurate positioning, the
1)SID is set at 40 inches (102 cm).
2)humeri are positioned vertically.
3)shoulders, posterior ribs, and posterior pelvic wings are aligned perpendicular to the image receptor (IR).
4)midsagittal plane is aligned perpendicular to the IR.
A) 1 and 3 only
B) 2 and 4 only
C) 2 and 3 only
D) 3 and 4 only

Question

Quizplus · Accepted Answer

For a left lateral chest projection, the humeri should be positioned vertically to prevent superimposition over the thorax, and the shoulders, posterior ribs, and posterior pelvic wings should be aligned perpendicular to the image receptor to ensure an accurate lateral view. The midsagittal plane alignment is not specific to lateral chest positioning, and the standard SID for chest radiography is typically 72 inches, not 40 inches, to reduce magnification and improve image quality.

For a Left Lateral Chest Projection with Accurate Positioning, the