FIG 2.

7T SWI characteristics of astrocytic and oligodendroglial lesions. Astrocytic lesions (A) were predominantly located in the WM and displayed infiltrative growth and focal obscuring of the corticomedullary junction (arrow) without displacing medullary vessels and other normal structures on 7T SWI (B). An oligodendroglioma (WHO grade II) with classic perinuclear halos and chicken wire-like vessels (C) shows thickening of the cortex (triangles), elongation but not thickening of the medullary vessels of the cortex, and expansive growth, displacing the medullary vessels on 7T-SWI (D). Scoring yielded a significant difference between astrocytomas and oligodendrogliomas (mean −1.93 versus +1.71, P < .01) (E). In a case of anaplastic oligodendroglioma, IDH-mutant and 1p/19q-codeleted, diffuse thickening of the cortex without tapering, thickening of medullary vessels, and microbleeds were observed (F). Scale bars = 50 µm. DA/AA/GBM indicates diffuse astrocytoma/anaplastic astrocytoma/glioblastoma; OD/AOD, oligodendroglioma/anaplastic oligodendroglioma.