Mandible - (Towne method)

Adult

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Name of projection	Mandible - (Towne method)
Area Covered	Condyloid processes of mandible and temporomandibular fossae
Pathology shown	Fractures, neoplastic and inflammatory processes of condyloid process and mandible
Radiographic Anatomy	Mandible Radiographic Anatomy
IR Size & Orientation	18 x 24cm 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 35° to 40° caudal Centre CR to glabella, to pass midway through EAM's and angle of mandible
Collimation	Collimate to mandible and TMJ's
Markers	Lateral and Inferior Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspend
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, Orbitomeatal Line (OML) is parallel to the floor, therefore perpendicular the bucky. Ensure the midsaggital plane is perpendicular to the bucky Ensure the interpupillary line is parallel to the floor CR 35° to 40° caudal Centre CR to glabella, to pass midway through EAM's and angle of mandible
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes

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