impingement views

Question 1

position for an impingement view

Answer 1

18x24 cm portrait
exposure - 70 kVp - 8/12 mAs
fine focus
No AEC
100 cm ffd
15 degrees caudal
handspan collimation 
PA pt
Rotate pt - thumb on medial border -> PA thumb + get medial border and AC joint line perpendicular to IR
center 8 cm below superior angle of scapular or see where the cross of the collimators cross over. 
Hang across tummy