Zygoma - Arch Tangential

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Zygoma - Arch Tangential
Area Covered	Zygomatic arch (unilateral)
Pathology shown	Fractures of zygomatic arch, neoplastic and inflammatory processes
Radiographic Anatomy	Facial Bones Radiographic Anatomy
IR Size & Orientation	18 x 24cm Landscape
Film / Screen Combination	Detail (CR and DR as recommended by manufacturer)
Bucky / Grid	No
Filter	No
Exposure	60 kVp 12 mAs
FFD / SID	100cm
Central Ray	CR perpendicular to infraorbitomeatal line CR centred to zygomatic arch
Collimation	Four sides of collimation Collimate closely to zygomatic arch
Markers	Superior and lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	Supine Patient supine on the table Place cassette behind patients head supported on a 45° sponge Extend neck Position head so the infraorbitomeatal line (IOML) is parrallel to IR Rotate and tilt the median sagittal plane 15° towards the side being examined CR perpendicular to infraorbitomeatal line CR centred to zygomatic arch Erect Patient is standing or sitting facing away from the upright bucky Extend neck Position head so the infraorbitomeatal line (IOML) is parrallel to IR Rotate the median sagittal plane 15° towards the side being examined Tilt the top of the head 15° away from the side being examined CR perpendicular to infraorbitomeatal line CR centred to zygomatic arch
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes