Brain gadolinium-enhanced MRI (1.5 Tesla) was completed by standard protocols for posterior fossa visualization. The extent of leukoaraiosis was assessed with the Fazekas scale (11 (link)) on T2-weighted images or FLAIR sequences and classified in four stages according to presence, size, and confluence of periventricular and deep WML: 0 “absent,” 1 “foci,” 2 “beginning confluent” and 3 “large confluent areas.”
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