Evaluation Criteria Of Sternum, Ribs And SC Joints

Question 1

PA oblique sternum (RAO position) evaluation criteria

Answer 1

• slightly obliqued image of the sternum projected over the heart
• lateral portion of the manubrium and sternoclavicular joint free of superimposition by the vertebrae

Question 2

Lateral sternum evaluation criteria

Answer 2

• entire length of sternum free of superimposition

- superimposed SC joints and medial ends of the clavicles

Question 3

PA SC joints evaluation criteria

Answer 3

• SC joints superimposed over vertebral column

- no rotation: SC joints equidistant to spinous processes

Question 4

Evaluation criteria 15 degree PA oblique SC joint

Answer 4

• manubrium and medial ends of clavicles are visualized
• SC joints have been moved off of the spine to side of body farthest from the IR. (Ex in RAO position the SC joints appear to the left of the spine)
• the SC joint closest to the IR is open (the one closest to the spine)