Cervical - Odontoid Peg (Fuch Method)This is a featured page

Radiographic Positioning


Adult
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Name of projection Cervical - Odontoid Peg AP (Fuch Method) or (Judd Method) when performed PA
Area Covered Dens (Odontoid Process) and other structures of C1 to C2 within the foramen magnum
Pathology shownPathology involving dens and and surrounding bony structures of the C1 ring
Radiographic AnatomyCervical Spine Radiographic Anatomy
IR Size & Orientation 18 x 24 cm
Portrait
Film / Screen Combination Regular
(CR and DR as recommended by manufacturer)
Bucky / Grid Moving or Stationary Grid
FilterNo
Exposure 65 kVp
16 mAs
FFD / SID 100 cm
Central Ray CR is parrallel to MML (mentomeatal line) , directed to the inferior tip of mandible
Collimation Four sides of close collimation to C1 to C2 region
Markers Lateral
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
RespirationSuspended respiration on expiration
PositioningFuch method performed AP
  • Patient supine on table with midsagittal plane aligned to CR and midline of table
  • Elevate chin to bring MML (mentomeatal line) near perpendicular to table top
  • Ensure that no rotation of the head (angles of mandibles equidistant to tabletop)
  • CR is parrallel to MML (mentomeatal line) , directed to the inferior tip of mandible
  • Centre IR to CR
Additionally this view may be performed PA known as the (Judd Method)
  • This the reverse of the AP Fuch method
  • Patient prone on table
  • Chin resting on table top and is extended to bring MML (mentomeatal line) near perpendicular to table
  • Ensure that there is no rotation of the head
  • Ensure that CR is parrallel to MML
  • Centre to midoccipital bone about 2.5cm inferoposterior to mastoid tips and angles of mandible
Critique

Positioning
Area Covered
Collimation
Exposure
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 4 2011, 4:49 AM EDT (about this update About This Update AndyC Edited by AndyC

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