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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Neurosurg Focus. 2016 Nov;41(5):E5. doi: 10.3171/2016.8.FOCUS16241

FIG 4.

FIG 4

Skull shapes in sagittal T1 (left column), axial T2 (center column), and coronal T2 (right column) MR images. A–C: Normocephalic. D–F: Brachycephalic, characterized by shortened anteroposterior diameter relative to biparietal diameter, particularly in rostral axial views. G–I: Dolichocephalic, characterized by shortened biparietal diameter relative to anteroposterior diameter. J–L: Bitemporal narrowing, characterized by narrow frontal diameter relative to occipital diameter in the axial plane. This patient also had significant posterior fossa crowding (note the cerebellar tonsils crowding the foramen magnum). M–O: Asymmetrical/irregular, characterized by marked asymmetry or irregularity.