fig 2.

Subtle right MCA stroke (patient case 5).

A, Raw CT scan shows subtle right MCA territory infarct (right of image is left of patient) involving the insula and posterior putamen.

B, Posterior putamen and insula are highlighted.

C, CT scan after automated scalp stripping and normalization to Talairach atlas (right of image is right of patient).

D, Automated segmentation color coded onto normalized CT scan (as in fig 1) shows excellent registration of basal ganglia structures and insular cortex.

E, Histogram plot for insula shows leftward shift for the right insula (solid line, P < 1 × 10⁻⁹).