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Patient 7 with an oligodendroglioma. Images show identification of the tumor or normal area based on voxel seed points. Selection of a VOI in the tumor does not highlight voxels in the surrounding brain; VOIs in the brain do not highlight voxel tumors. A, Anatomic image. B, Tumor (arrow at VOI: x = 27, y = 26, z = 25) and (B’) BOLD signal intensity at R = 0.9917. C, Normal brain tissue (arrow) and BOLD signal intensity (C’) at VOI: x = 18, y = 16, z = 22) at R = 0.9301.
