Facial - Slit (SMV) (Basal)

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Facial - Slit (SMV) (Basal)
Area Covered	Zygomatic arches (bilateral)
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 IR CR midway between zygomatic arches, 4cm inferior to mandibular sumphysis
Collimation	Four sides of collimation Collimate to outer margins of zygoma
Markers	Superior and lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspend
Positioning	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 CR perpendicular to IR CR midway between zygomatic arches, 4cm inferior to mandibular sumphysis
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes