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Fig. 3A Receiver operating characteristic (ROC) curves. ROC curves
show power of choline-citrate (Cho/Cit) ratio alone (dashed line),
apparent diffusion coefficient (ADC) alone (dotted line), and
combination of the two (solid line) as predictors of tumor at
histology when voxels containing
30% tumor as defined by tumor regions of
interest on T2-weighted images are considered positive (A) and when
voxels containing
70% tumor are considered positive (B).