FIG 3. A and B, T1-weighted MR images of case 8 (A) and case 25 (B) in which the spectroscopic voxel is homogeneous and only faintly enhanced. The voxels for MR spectroscopy are indicated by squares. These contrast-enhanced images were obtained after spectroscopic examinations, and the location of the voxels was superimposed afterward. Note that in case 25, the tumor outside the voxel is heterogeneous