FIG 5. Case 2 spectra (1500/270/128), obtained by using a 2 x 2 x 2 cm voxel size (left, right occipital lobe voxel; right, left occipital lobe voxel), show reduced NAA/Cr and NAA/Cho ratios in the voxel placed within the abnormal right occipital tissue compared with those obtained in the contralateral normal occipital lobe. However, the degree of the relative reduction is less than that seen in case 1.