Mandible - ObliqueThis is a featured page

Radiographic Positioning


Adult
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Name of projection Mandible - Oblique (Left / Right)
Area Covered Rami, condylar and coronoid processes, body and mentum of mandible nearest to IR
Pathology shown Fractures, neoplastic and inflammatory processes
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 60 kVp
16mAs
FFD / SID 100cm
Central Ray CR angled 25° cephalad
Direct CR to exit mandibular region of interest
Collimation Collimate closely to mandible
Markers Anterior and Inferior
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
Respiration Suspend
Positioning
  • Patient is standing or sitting next to the upright bucky
  • Place head in a lateral position with side of interest against IR
  • If possible have patient close mouth and bring teeth together
  • Extend neck (to clear the mandible of the cervical spine)
  • Rotate the head in an oblique direction (the degree of obliquity depend upon the section of manible that is of interest) - the area of interest should be positioned parrallel to the IR
    • Head in true lateral position demonstrates ramus
    • 30° rotation demonstrates body
    • 45 ° rotation demonstrates mentum
    • 10° to 15° rotation provides a general survey of mandible
  • CR angled 25° cephalad
  • Direct CR to exit mandibular region of interest
Critique

 Positioning
Area Covered
Collimation
Exposure
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 17 2011, 8:40 AM EDT (about this update About This Update AndyC Edited by AndyC

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