The AP (anteroposterior) view of the finger is an X‑ray projection with the palmar surface placed flat on the detector and the finger fully extended, digits separated. The central ray is centered at the PIP joint. This view visualizes the phalangeal shafts, joints and alignment, helping detect fractures, dislocations and joint space abnormalities; include the fingertip through the distal metacarpal.

A standard finger X‑ray usually includes three views—PA (or AP), oblique, and lateral—to detect fractures, assess joint alignment and displacement, and look for foreign bodies. Additional or specialized projections may be requested for complex injuries, small fragment detection, or surgical planning. Proper positioning and immobilization reduce the need for repeat imaging.

The anteroposterior (AP) view X‑ray is used to image body regions—commonly the chest, abdomen, spine, pelvis and extremities—when a patient cannot stand or when bedside imaging is needed. It helps assess lung fields, heart size, fractures, joint alignment, foreign bodies, lines/tubes, and acute trauma or postoperative status. AP views are routine in emergency, critical care, preoperative and immobilized‑patient evaluations.

Identify PA versus AP by patient position and image features. PA (posterior to anterior) is taken upright with scapulae projected lateral to the lungs, more symmetric clavicles, and less cardiac magnification. AP (anterior to posterior), often portable or supine, shows scapulae over lung fields, apparent cardiomegaly/mediastinal widening from magnification, poorer inspiration, and may be labeled or show external lines.

To identify an AP chest view, first look for an AP/PA marker. If missing, AP signs include a portable/supine setup, scapulae projected over lung fields, clavicles more horizontal and medially rotated, apparent cardiac enlargement from magnification, elevated hemidiaphragms and reduced inspiratory volumes. Check for external leads, tubes, or labels that indicate a portable AP technique.

To check pulse (P), use the pads of your index and middle fingers—place them gently over the radial artery on the thumb-side of the wrist. Avoid using your thumb, which has its own pulse. Press lightly until you feel beats, then count for 60 seconds (or 30 seconds ×2). For carotid pulse, use the same two fingers on one side of the neck.