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(a) Regression analysis for MPRAGE and VASO long-T1 zones. MPRAGE and VASO predict similar long-T1 volumes, an observation significant at p<0.01. A strong correlation between GAD-T1w volumes and combined predicted MPRAGE and VASO long-T1 volume exists (b), which, on average, also increases with tumor grade (c). Therefore, VASO and MPRAGE approaches may provide a method for noninvasively determining tumor grade. Error bars represent standard error.
