Figure 2.

Swollen inferior, medial and lateral recti (A-D) T1-weighted non-enhanced orbital image showing a central linear streak in the lateral recti bilaterally (A) (arrow) which is hypointense on STIR (short tau inversion recovery) sequences (B). The muscle bellies are swollen with sparing of their tendinous insertion (asterisk). Also peripheral enhancement of the recti is seen (B). The T2-weighted images show diffuse hyperintensity (C). T-1 (STIR) gadolinium-enhanced orbital image of an another patient for comparison of abnormal recti in thyroid-associated orbitopathy compared to normal recti (E).