FIGURE 8 | Appearance of a thalamic lesion on postoperative day 1. The lesion in the left thalamus is manifest as a T2/FLAIR spherical hyperintense focus with a diameter of about 6 mm. There is hemosiderin clearly shown in the susceptibility weighted image (SWI). There is a rim of restricted diffusion with a core of facilitated diffusion shown on the DWI and ADC images. The FGATIR sequence shows the relationship between the lesion, thalamus, and adjacent internal capsule.