IR Size: 14x17 grid or bucky
Pt position: place the IR 1 1/2" above the superior border of the shoulder. patient is seated, standing or supine in a 45 degree oblique. adjust the arms out of the field of view. full inspiration
CR: upper - perpendicular to the IR, bisecting the lateral borders of the patient entering 3-4" inferior to the jugular notch (LPO/RPO)
lower - perpendicular to the IR, bisecting the lateral borders of the patient, entering the level of the xiphoid process.