A Left PA 60-Degree Oblique Chest Projection (LAO Position)

Multiple Choice

A left PA 60-degree oblique chest projection (LAO position)
1) demonstrates the heart shadow to the right of the vertebral column.
2) is obtained to evaluate the size and configuration of the heart shadow.
3) best demonstrates the left lung.
4) demonstrates three times as much lung field on one side of the vertebral column as on the opposite side.

A) 1 and 2 only
B) 1 and 3 only
C) 1, 2, and 4 only
D) 2 and 4 only