Interscanner variation in brain MRI lesion load measurements in MS: Implications for clinical trials

Filippi, Massimo; Vanwaesberghe, Jh; Horsfield, Ma; Bressi, S; Gasperini, C; Yousry, Ta; Gawnecain, Ml; Morrissey, Sp; Rocca, Ma; Barkhof, F; Nijeholt, Gjla; Bastianello, S; Miller, Dh