Topological Measurements of DWI Tractography for Alzheimer’s Disease Detection

Figure 2

All subjects of the cohort are represented through graphs with exactly the same nodes (in red), corresponding to brain anatomical districts, but with different connections. For example, the figure shows the case of two nodes (1, 2) connected for all subjects and two nodes (1, 3) connected only in the first two subjects. The presence of a link in different subjects is also outlined (blue dashed lines). For each link in the networks it is possible to measure the fraction of subjects having a link in common, the so-called link overlap.