Author Question: For a PA cranial projection, 1. the midsagittal plane is positioned parallel with the IR. 2. the ... (Read 81 times)

Arii_bell · **on:** Jul 17, 2018

For a PA cranial projection,

1. the midsagittal plane is positioned parallel with the IR.
2. the OML is aligned perpendicular to the IR.
3. the central ray is aligned perpendicular to the IR.
4. the central ray is centered to the nasion.
a. 1 and 3 only
b. 2 and 3 only
c. 2, 3, and 4 only
d. 1 and 4 only

Question 2

A below-diaphragm AP oblique rib projection (RPO position) with accurate positioning demon-strates

1. the ninth through twelfth ribs below the diaphragm.
2. the axillary ribs without foreshortening.
3. the seventh axillary rib at the center of the collimated field.
4. the inferior sternal body just to the right of the vertebral column.
a. 1 and 2 only
b. 2 and 4 only
c. 1 and 3 only
d. 1, 2, and 4 only