Fig. 1

Cortical lesions and artefacts. Two hyperintensities misinterpreted as cortical lesions on a 3-T double inversion recovery images (b–f), are de facto extracranial vessels, as demonstrated on 7-T magnetisation-prepared rapid gradient echo images (a–c). Magnified versions of the images are also shown (e–h). Published with permission from J Magn Reson Imaging [41]