Test GIF

Assess Adequacy


  • PA/lateral projection is the standard used for most patients who are ambulatory and able to stand.
  • AP projection is obtained with the patient in bed and lying flat or partly upright.  It is usually reserved for nonambulatory patients.
  • AP projections have the disadvantage of making the heart an mediastinum appear more prominent as well as usually resulting in shallower inspiration which can limit evaluation of the lung bases.
  • Always order a PA/lateral CXR over a AP CXR when possible.