93 White matter hyperintensity shape is associated with long-term dementia risk 5 Figure 5.2. Examples of periventricular/confluent WMHs (A) and their corresponding WMH shape values in plots (B) to provide more insight into structural correlates of WMH shape marker values. A lower solidity and convexity, as well as a higher fractal dimension and concavity index, indicate a more irregular WMH shape. Examples of deep WMH and their corresponding WMH shape marker eccentricity (C). A lower eccentricity corresponds to a more elongated lesion, while a higher eccentricity corresponds to a more spherical lesion.
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