PET and SPECT Imaging of ALS: An Educational Review

Figure 2

Brain regions in ALS with hypometabolism (shaded in blue) and hypermetabolism (shaded in red). The more transparent (lighter) blue and red regions indicate single study results. Note that the parahippocampal gyrus and basal ganglia, areas of reported hypometabolism in a few studies, are not depicted in the illustrated diagram.