Vein density and oxygen extraction fraction were quantified in brains with glioma using a susceptibility-based approach at 7T. Brains with low grade glioma featured more extensive areas with significant difference in vein density and OEF between the homotopic ROIs that mainly involve fronto-parietal areas and basal ganglia, in contrast to brains with high grade glioma with the differential vein density and OEF distribution mainly involving bilateral thalami. The inter-homotopic measurements of vein density and OEF were significantly correlated, suggesting that the oxygen metabolism malfunction in brains with high grade glioma might be partially ascribed to the altered venous distribution.
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