Primary Lymphoma of the Central Nervous System: Typical and Atypical CT and MR Imaging Appearances
AJR 176:1319-1326, Erdag,N.,et al, 2001
Interferon-B-1a in Relapsing-Remitting Multiple Sclerosis:Effect on Hypointense Lesion Volume on T1 Weighted Images
JNNP 67:579-584, Gasperini,C.,et al, 1999