@conference {1018, title = {Tissue Characterization in Relapsing-remitting and Secondary-progressive MS via Magnetization Transfer Ratio}, booktitle = {International Society for Magnetic Resonance in Medicine: Eight Scientific Meeting and Exhibition}, year = {2000}, month = {Apr 2000}, pages = {1189}, address = {Berkeley}, author = {Yiyue Ge and Robert J Grossman and Jayaram K Udupa and James S Babb and L{\'a}szl{\'o} G{\'a}bor Ny{\'u}l and Joseph C McGowan} }