Facial Bones - PA 30° (Modified Parietocanthial)

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Facial Bones - PA 30° (Modified Parietocanthial)
Area Covered	Orbital floor, show a less distorted view of the entire orbital rim than a PA 15° view
Pathology shown	Orbital fractures (blowout), foreign bodies, neoplastic and inflammatory processes
Radiographic Anatomy	Facial Bones Radiographic Anatomy
IR Size & Orientation	24 x 30cm 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	100cm
Central Ray	CR perpendicular to IR CR to exit at the acanthion
Collimation	Collimate closely to outer margins of the skull
Markers	Inferior and Lateral Marker orientation PA
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspend
Positioning	The patient should be seated, facing the upright bucky. Extend neck, resting chin and nose against bucky Adjust head until Lips-meatal line (LML) is perpendicular, OML is 55° with IR The median sagittal plane should be perpendicular to midline of bucky CR perpendicular to IR Centre CR to IR CR to exit at the acanthion
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes