Skull (Towne view)

Andrew Murphy and Dr Matt A. Morgan et al.

The Towne view is an angled AP radiograph of the skull, used to evaluate for fractures of the skull and neoplastic changes

  • the patient's nuchal ridge is placed against the image detector
  • the infraorbitomeatal line (IOML) is perpendicular to the image receptor 
  • anteroposterior axial projection
  • centring point
    • the beam travels 30 degrees caudad to the orbitomeatal line (OML)
  • collimation
    • superior to include skin margins
    • inferior to include base of skull
    • lateral to the skin margins 
  • orientation  
    • portrait
  • detector size
    • 24 cm x 30 cm
  • exposure
    • 60-70 kVp
    • 10-20 mAs
  • SID
    • 100 cm
  • grid
    • no
  • dorsum sella overlies the foramen magnum
  • petrous ridges are symmetrical 
  • if the dorsum sella projects above the foramen magnum it requires an increase in angle
  • if the anterior arch of C1 is laying in the foramen magnum, less angle is required 
  • occipital bone and posterior fossa space better evaluated than with a non angulated AP view, which would have more skull base and facial bone overlap
  • better than a conventional AP view for evaluating an occipital plagiocephaly involving the lambdoid suture 
  • may be a useful additional view for evaluating skull fractures 1
Radiographic views
Share article

Article information

rID: 37239
Section: Radiography
Synonyms or Alternate Spellings:
  • Grashey skull view
  • Skull AP axial view
  • Towne view
  • Chamberlain-Towne view
  • Chamberlain-Towne projection

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Figure 1: skull positioning lines
    Drag here to reorder.
  • Drag
    Case 1: Towne view (skull AP axial view)
    Drag here to reorder.
  • Drag
    Figure 2: cranial landmarks
    Drag here to reorder.
  • Drag
    Figure 3: Towne view (skull AP axial view)
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.