Cervical spine (Fuchs view)

The closed mouth odontoid AP view (Fuchs view) is a nonangled AP radiograph of C1 and C2. This view focuses primarily on the odontoid process. The standard Fuchs view should not be used in a trauma setting and the modified Fuchs view may be used instead.

  • supine or erect
  • head placed against the image detector
  • chin angled up 35-40°
  • anteroposterior projection
  • centring point
    • the beam is aimed just underneath the chin
  • collimation
    • superior to the TMJ
    • inferior to include  C2/3
    • lateral to include the skin margin
  • orientation  
    • portrait
  • detector size
    • 24 cm x 30 cm
  • exposure
    • 75-80 kVp
    • 20-25 mAs
  • SID
    • 100 cm
  • grid
    • yes (this can vary departmentally)

The entire odontoid process should be visibly to avoid obscuring anatomy.

More likely to avoid structures overlapping the odontoid than with the open mouth odontoid view.

This view should not be used in a trauma setting (to avoid manipulating a potentially unstable spine) the modified Fuchs view may be used instead; instead of moving the patient's chin, the beam is angled 35-40° upward and the odontoid is targeted just under the chin (the chin is in a neutral position).

Radiographic views
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Article information

rID: 37351
Section: Radiography
Synonyms or Alternate Spellings:
  • Fuchs view
  • Judd view
  • Fuchs method
  • Odontoid peg view
  • Odontoid peg AP view
  • Modifed Fuchs view

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Cases and figures

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    Diagram of the st...
    Figure 1: standard Fuchs view
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    Diagram of the mo...
    Figure 2: modified Fuchs view
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  • Drag
    Case 1: standard Fuchs view
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