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skull · Parieto-orbital Oblique
Orbits PA Axial (Rhese)
Patient erect facing IR; chin, cheek and nose resting on IR.
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AI Patient · KV Sir
How to perform this view
- 01
Rest patient's zygoma, nose and chin on IR (three-point landing).
- 02
Rotate MSP 37 deg toward affected side.
- 03
Acanthiomeatal line perpendicular.
- 04
CR to downside orbit.
- 05
Do both sides.
Anatomical & patient position
Patient: Patient erect facing IR; chin, cheek and nose resting on IR.
Part: MSP rotated 37 deg from IR; AML perpendicular.
Central ray & centring point
Perpendicular, through affected orbit.
Exposure factors
kVp
75-80 kVp
mAs
10-15 mAs
SID
100 cm
IR size
18 x 24 cm
Grid
Yes
Respiration
Suspended
Clinical indications
- Optic canal/foramen
- Orbital foreign body (metal before MRI)
- Orbital fractures
Contraindications & precautions
- Suspected unstable spinal injury - do NOT move neck/spine; use cross-table lateral first and keep collar
Structures shown & evaluation criteria
- Optic foramen in lower outer quadrant of orbit