What is a common palpable landmark for an AP chest projection on the obese patient?  

Why must the technologist slightly angle the CR caudad for most AP projections of the chest?  

Refer to Image A: Which joint demonstrates this patient’s rotation?

Which of the following are reasons why chest radiography should be done erect?  

What would you do differently to obtain a lateral upright chest x-ray if the patient is in a stretcher?  

A patient is in the intensive care unit (ICU) with multiple injuries. The attending physician is concerned about a pleural effusion in the left lung.  The patient had a surgery recently and cannot stand.  Which position would be best to rule out the pleural effusion?  

A patient comes to radiology with a possible mass beneath the right clavicle. The PA and left lateral projections are inconclusive.  Which additional position can be taken to demonstrate this possible mass?  

Why are the shoulders pressed downward and towards the IR for a PA projection of the chest?  

Which positioning line must be placed perpendicular to the plane of the IR for an AP projection of the upper airway?  

Select the collimation guidelines for a PA erect chest radiograph?