Fig 2.

Sulcal hyperintensity. The first column shows the FLAIR images at baseline, the second column shows the FLAIR images at follow-up, and the third column shows the FLAIR images at follow-up with a very narrow contrast window/level setting accentuating the abnormalities for descriptive purposes. Upper row shows a right frontal abnormality with a diameter <2 cm (score 1). Middle row shows a left occipital abnormality with a maximum diameter between 2 and 4 cm (score 3); and lower row shows a right parietal abnormality of >4 cm (score 4).