Zygomas - Slit Townes

Adult

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Name of projection	Zygomas - Slit Townes
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	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 30° caudal CR to 2.5cm suoerior to glabella
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	Suspended
Positioning	Patient is in an erect position, either standing or sitting Position the patient so that their back and posterior skull are touching the bucky Bring the patients chin down until the radiographic baseline Orbito Meatal Line (OML) is parallel to the floor, therefore perpendicular the bucky. If the patient is not able to do this, the central ray angle may have to be increased caudally so that there is a 30° angle between the radiographic baseline (OML) and the central ray. Ensure the midsaggital plane is perpendicular to the bucky Ensure the interpupillary line is parallel to the floor CR 30° caudal CR to 2.5cm superior to glabella
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes

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