Quantitative oxygen extraction fraction from 7-Tesla MRI phase: reproducibility and application in multiple sclerosis. Fan AP, Govindarajan ST, Kinkel PR, Madigan NK, Nielsen SA, Benner T, Tinelli E, Rosen BR, Adalsteinsson E, Mainero C J Cereb Blood Flow Metab. 2014 Oct 29. PMID: 25352043. Abstract CommentRecommendBookmarkWatch