Exams
Skull / Facial

Mandible

3 default · 0 custom

Quick technique

kVp
70–80
mAs
15–25
SID
40 in
Grid
Yes
Detector
24x30 cm; divided for axiolaterals.
Breath
Suspend.

Views

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Placeholder
Patient position
Erect or prone for PA; supine for Towne's; semi-prone for axiolaterals.
Part position
PA: forehead and nose on IR, OML perpendicular. Axiolateral: head true lateral, then rotated 30° toward IR.
Central ray
PA: perpendicular to acanthion. Towne's: 35° caudal to glabella. Axiolateral: 25° cephalic to mandibular angle.
IR placement
24x30 cm; divided for axiolaterals.

TechniqueDefault

kVp
70–80
mAs
15–25
SID
40 in
Grid
Yes
Breath
Suspend.
Detector
24x30 cm; divided for axiolaterals.

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Anatomy coverage

Body, rami, condyles, symphysis.

Tech pearls

  • Multiple obliques needed for whole mandible — one for body, one for ramus.
  • Have patient open mouth slightly to project condyles below skull.

Image evaluation

  • Axiolateral: side closer to IR demonstrated, free of opposite mandible

Common mistakes

  • Insufficient axial angle (rami overlap)
  • Wrong side closer to IR
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Anatomy overview

BodyRamusAngleCondyleCoronoid processSymphysis
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Protocol controls

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