Mandible - (Towne method)This is a featured page

Radiographic Positioning


Adult
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Name of projection Mandible - (Towne method)This is a featured page
Area Covered Condyloid processes of mandible and temporomandibular fossae
Pathology shownFractures, neoplastic and inflammatory processes of condyloid process and mandible
Radiographic AnatomyMandible 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
FilterNo
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)
RespirationSuspend
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

Positioning
Area Covered
Collimation
Exposure
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 15 2011, 1:57 AM EDT (about this update About This Update AndyC Edited by AndyC

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