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skull · PA / Axiolateral Oblique
Mandible PA & Axiolateral Oblique
PA: forehead and nose on IR. Oblique: lateral head, rotated 30 deg toward IR.
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AI Patient · KV Sir
How to perform this view
- 01
PA: forehead-nose on IR, CR perpendicular exiting at lips.
- 02
Oblique: head lateral, extend chin, rotate 30 deg toward IR.
- 03
Angle CR 25 deg cephalad, enter 5 cm below angle of mandible.
- 04
Repeat for opposite side.
Anatomical & patient position
Patient: PA: forehead and nose on IR. Oblique: lateral head, rotated 30 deg toward IR.
Part: PA: OML perpendicular. Oblique: head 30 deg toward IR for body, 0 deg for ramus.
Central ray & centring point
PA: perpendicular at lips. Oblique: 25 deg cephalad to mandibular region.
Exposure factors
kVp
70-80 kVp
mAs
10-15 mAs
SID
100 cm
IR size
18 x 24 cm
Grid
Yes
Respiration
Suspended
Clinical indications
- Mandibular fractures
- Dental abscess, cysts
Contraindications & precautions
- Suspected unstable spinal injury - do NOT move neck/spine; use cross-table lateral first and keep collar
Structures shown & evaluation criteria
- Mandibular body and ramus
- Symphysis (PA)