Figure 2. Mean and standard deviation(vertical lines) of normalized STEAM (echo time (TE) = 30 ms) spectra acquired from a number of subjects: Normal white matter (n = 6); meningioma (n = 8); astrocytoma grade II (n = 5); anaplastic astrocytoma (n = 7); glioblastoma (n = 13). Published with permission [28].