Fig. 15. Imaging features of myelin oligodendrocyte glycoprotein antibody–associated disease-related optic neuritis in a 10-year-old patient presenting with acute loss of vision in the left eye. A: Axial T2FS image through the left orbit reveals longitudinally extensive hyperintense swelling of the left optic nerve along its entire intraconal length (long arrow). Note the faint peri-optic fat stranding in the retrobulbar region (short arrow). B: Contrast-enhanced-T1FS image reveals abnormal enhancement within the affected optic nerve along with ill-defined enhancement of the peri-optic fat (arrow) and marked enhancement of the peri-optic sheath posteriorly (dotted arrow). FS = fat saturation.
