Clinical Features of Painful Ophthalmoplegia with a High-Intensity Ring Appearance around the Optic Nerve on MRI: A Case Series

Figure 3

Brain MRI of cases 2–4. In case 2 (a), the high-intensity ring appearance (arrowheads) around the left optic nerve is found on STIR MRI. In cases 3 (b) and 4 (c), the high-intensity ring appearance (arrowheads) around the right optic nerve is found on fat-suppressed T2-weighted MRI.

(a)

(b)

(c)