Fig. 7

Cranial and extracranial predictors of mortality. Glyph-based representation of voxels with high feature importance in the best-performing XGBoost model, overlaid on surfaces extracted from the corresponding tissue compartment. A Left precentral gyrus, right anterior cingulate, right angular gyrus and right temporal pole, the region of the dorsal corticospinal tract, and the right superior longitudinal fasciculus are highlighted. B Extracranially, parietal bone was highlighted, and diffusely distributed soft tissue. Note that laterality differences are difficult to interpret here as any collinearity of dependence arising from hemispheric symmetry would result in down-weighting of redundant features: this is an inevitable feature of flexible, high-dimensional discriminative models