Cervical - Odontoid Peg (Fuch Method)

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

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 shown	Pathology involving dens and and surrounding bony structures of the C1 ring
Radiographic Anatomy	Cervical 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
Filter	No
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)
Respiration	Suspended respiration on expiration
Positioning	Fuch 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 PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes