Left: Axial T1WI at the level of optic nerves shows increased orbital fat.
The left side is less severely involved.
Right: Axial fat-suppressed T1WI with gadolinium shows fusiform muscle
enlargement with sparing of the tendinous insertions on the globe.
Left: Axial T1WI with gadolinium again shows muscle enlargement with
sparing of the insertions.
Top and bottom right: Consecutive coronal T1WIs with gadolinium and
fat suppression demonstrate enlargement of the extraocular muscle,
especially the right medial rectus and inferior oblique.
Key words: mri orbit inflammation