Sternum, Clavicle & Ribs - 2

Ribs
PA / AP

• Upper ribs

• Lower ribs

Obliques

• (Usually) posterior obliques (RPO, LPO)

• Anterior obliques (RAO, LAO)

Ribs PA
Patient Position

• Position patient erect or prone.

Part Position

• Center midsagittal plane to grid with chin extended and eyes straight ahead.

• Place top of IR approximately 11/2 inches (3.8 cm) above shoulders.

• Have patient roll shoulders forward and rest back of hands on hips.

Respiration:

• Obtain radiograph during suspended full inspiration to depress diaphragm.

Central Ray

• Direct perpendicular to center of Cassette. This places the CR at level of T7.

Ribs AP (above diaphragm)
Patient Position

• Position patient erect or supine.

Part Position

• Center midsagittal plane to midline of grid.

• Place top of cassette 11/2 inches (3.8 cm) above relaxed shoulders.

• Rotate shoulders anteriorly.

Respiration:

• Obtain radiograph during suspended full inspiration.

Central Ray

• Direct perpendicular to center of cassette.

Ribs AP (below diaphragm)
Patient Position

• Position patient erect or supine.

Part Position

• Center midsagittal plane to midline of grid.

• Center thorax with bottom of cassette at level of iliac crests.

Respiration:

• Obtain radiograph during suspended full expiration.

Central Ray

• Direct perpendicular to center of cassette.

Ribs AP obliques (RPO, LPO)
Patient Position

• Position patient erect or supine.

Part Position

• Rotate patient's body 45 degrees with affected side toward IR.

• Center a plane midway between midsagittal plane and lateral surface of body to the bucky.

• Abduct arm nearest bucky, and place hand on head.

• Abduct opposite limb, and place hand on hip.

Center top of IR 1 & 1/2 inches (3.8 cm) above relaxed shoulder (for above diaphragm) and with lower edge of IR at level of iliac crest (for below diaphragm).


Respiration:

• Above diaphragm: Obtain radiograph during suspended full inspiration. Below diaphragm: Obtain radiograph during suspended full expiration.

Central Ray

• Direct perpendicular to center of cassette.

Exposure:- 75 kV, 30-40 mAs

Ribs PA obliques (LAO, RAO)

• Position patient erect or prone.

• Rotate patient's body 45 degrees with affected side away from IR.

• Center a plane midway between midsagittal plane and lateral body surface.

• Abduct and extend arm nearest IR and rest on hip.

• Abduct opposite arm and rest on film holder or head.

• Center top of IR 11/2 inches (3.8 cm) above relaxed shoulder (for above diaphragm) and with lower edge of IR at level of iliac crest (for below diaphragm).

• Above diaphragm: Obtain radiograph during suspended full inspiration. Below diaphragm: Obtain radiograph during suspended full expiration.

• Direct perpendicular to center of IR.

Exposure factors

•  Low kV (70 -80) is recommended to obtain high contrast between bone and soft tissue.