Figure 1.

Illustration of the different ROIs.

Four regions of interests (ROIs) are indicated for hypothetical characteristics comparison. The red boxes indicate the peritumoral abnormal q ROIs in more than half of the MRS voxel size; the red arrow indicates the peritumoral ROIs with no q abnormality or less than half of the MRS voxel size; the orange arrow indicates the contrast-enhanced lesion; the white arrow indicates the contralateral normal-appearing white matter.

MRS, magnetic resonance spectroscopy.