-
IR
- 10x12 LW VGD
- upper border IR @ vertex level
-
PT
- seated upright
- facing tube
-
part
- MSP ┴ IR
- OM line ┴ IR (flew neck)
-
CR
- 30° caudal thru foramen magnum
- enters 2-2.5" above glabella
-
-
SS
- Symmetric petrous pyramids
- post foramen magnum
- dorsum sellae + post clinoid processes projected in foramen magnum
- occipital bone + post parietals
-
EC
- lat skull border - lat magnum equidistance both sides
- symmetric pyramids
- dorsum sellae visible in magnum
- penetrate occipital
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