For an AP Thoracic Projection, the

Multiple Choice

For an AP thoracic projection, the
1) shoulders and the ASISs are positioned at equal distances from the imaging table.
2) hips and knees are flexed until the lower back is pressed against the imaging table.
3) central ray is centered to the fifth thoracic vertebra.
4) transversely collimated field is open to an 8-inch (20-cm) field size.

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