Skull (PA view)

The skull PA view is a non angled PA radiograph of the skull. This view provides an overview of the entire skull rather than attempting to highlight any one region.

  • patient is erect

  • the patient's forehead is placed against the image detector allowing for the nose to be in contact as well

  • posterioranterior projection

  • centring point

    • the beam is exiting at the nasion

  • collimation

    • superior to the skin margins

    • inferior to include the most inferior aspects of the skull

    • 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 petrous ridge will overlap the lower 1/3 of the orbits, the innominate lines should be equal distance from the lateral borders of the orbits.

  • the PA view decreases the radiation dose to the eyes compared with the AP view

  • less magnification of the facial bones compared with the AP view

  • overlap of facial bone structures makes it harder to evaluate the sinuses than with an angled view (e.g. Caldwell view)

Radiographic views
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Article information

rID: 37163
Section: Radiography
Synonyms or Alternate Spellings:
  • Skull frontal view

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Cases and figures

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    Figure 1
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    Case 1: skull PA view
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