Skull - PA (Haas)

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Skull - PA (Haas)
Area Covered	Occipital bone, petrous ridges and foramen magnum with dorsum sellae and posterior clinoids visualised in the shadow of the foramen magnum
Pathology shown	Fractures of the skull
Radiographic Anatomy	Skull Radiographic Anatomy
IR Size & Orientation	24 x 30 cm Portrait
Film / Screen Combination	Regular (CR and DR as recommended by manufacturer)
Bucky / Grid	Moving or Stationary Grid
Filter	No
Exposure	75 kVp 20 mAs
FFD / SID	100 cm
Central Ray	CR angled 25° cephalad to OML
Collimation	Outer skin margins of the skull
Markers	Inferior and Lateral Marker orientation PA
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	Erect Patient is standing or sitting facing the upright bucky Forehead and nose are touching the bucky Flex neck, bringing OML perpendicular to IR Align midsaggital plane perpendicular to the midline of bucky Ensure there is no rotation or tilt of the head CR angled 25° cephalad to OML Prone Patient in the prone position on the X-ray table Rest patients nose and forehead against table/bucky Flex neck aligning OML perpendicular to IR Align midsagittal plane perpendicular to midline of table/bucky Ensure there is no rotation or tilt of the head CR angled 25° cephalad to OML
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes