Examples of persisting foci of meningeal enhancement on delayed postcontrast FLAIR at 7T. Sagittal reformatted images show subarachnoid spread/fill enhancement that persists from December 15, 2015 (A), to March 3, 2017 (B), in a 58-year-old woman with relapsing-remitting MS. Axial images show subarachnoid nodular enhancement that persists from October 8, 2014 (C), to March 3, 2017 (D), in a 49-year-old man with relapsing-remitting MS. Axial images show vessel wall enhancement that persists from March 14, 2016 (E), to April 4, 2017 (F), in a 57-year-old man with primary-progressive MS. Axial images show dural enhancement that persists from May 9, 2016 (G), to May 31, 2017 (H), in a 44-year-old woman with secondary-progressive MS. Note that no intrinsic signal was observed in these locations on precontrast acquisitions (not shown).