Ribs

Question 1

Ap projection

Px position
Part position
Cr/rf
Ss

Answer 1

Upright
Shoulder rotated forward
Perpendicular rp at T7 (upper ribs) or T10 (lower ribs)
Posterior ribs above the diaphragm (1st- 10th) and above diaphragm (8th-12th)

Question 2

Pa projection

Px position
Part position
Cr/rf
Ss

Answer 2

Upright/prone
Shoulder rolled forward to avoid superimposition
Perpendicular to ir or 10-15* caudad (for 7th- 9th ribs)
Anterior ribs (1st – 9th) above the diaphragm

Question 3

Ap oblique projection

Px position
Part position
Cr/rf
Ss

Answer 3

Upright
Body rotated 45* (affected side down)
Perpendicular rp at T7 (upper ribs) or T10 (lower ribs)
Axillary closest to ir

Question 4

Pa oblique projection

Px position
Part position
Cr/rf
Ss

Answer 4

Upright
Body rotated 45* (affected side up)
Perpendicular rp at T7 (upper ribs) or T10 (lower ribs)
Axillary away from ir

Question 5

Clinical indication of ap projection of ribs

Answer 5

Pathology of the ribs, including fracture
and neoplastic processes

Question 6

Clinical indication of pa projection of ribs

Answer 6

Pathology of the ribs includes fracture or neoplastic processes. Injuries to ribs below the diaphragm are generally to posterior ribs; therefore, AP projections are indicated.

Question 7

Clinical indication for Ap or pa oblique projection of axillary ribs

Answer 7

Pathology of the ribs, including fracture
and neoplastic processes. Oblique positions will demonstrate the axillary portion of the ribs