Brain picture (left panel) and hierarchical dissection scheme example displayed as a CBF ROI Map (right panel). A tracing was generated for each brain. The specific map for subject 10 is shown dissected according to the ROI template consisting of nine slices with 94 ROIs. Each slice is cut symmetrically left to right. The hippocampus (45, 92) and cerebellum (46, 47, 93, 94) are shown but were not included in the analysis. The remaining 88 ROI's were used in the analysis. The "core injury" region was identified as ROI's 25–27 based on visual examination after removal of the brain. The injury "penumbra" extended anterior and posterior to the core injury region as identified in the tracing.