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Fig 2. T2-weighted MR, selected spectra, and metabolic images of Cho, Cr, NAA, and lactate (Lac) in a case of rarefaction of white matter (LVWM). Metabolic images clearly show decreased Cr and NAA in T2-hyperintense white matter regions, whereas Cho is largely unchanged. In white matter voxels, the NAA/Cho ratio is approximately 1:1. This patient was diagnosed with LVWM at a very early stage and is 1 of the 2 patients with LVWM misclassified in group 1. PPM indicates parts per million.
