Figure 3.

Magnetic resonance optic nerve images acquired in a 30-year-old female with a 5-day history of acute right optic neuritis. (A) Axial post-contrast T₁-weighted image shows swelling and enhancement of the intraorbital and intracanalicular parts of the right optic nerve. (B) Coronal T₂-weighted image shows swollen hyperintense right optic nerve through posterior orbit. (C) Coronal post-contrast T₁-weighted image shows gadolinium-enhancement of right optic nerve in posterior orbit. Images are courtesy of Dr Ahmed Toosy, UCL Institute of Neurology, London, UK.