Figure 2b.

Pertinent anatomy in structural imaging. (a) Sagittal illustration (left) and sagittal correlative T1-weighted MR image (right) show the pertinent anatomy. Attention should be paid to the parietal lobe on parasagittal images, as this is the location of the precuneus that is typically affected in Alzheimer disease. (b) Small-field-of-view coronal-oblique T2-weighted MR image with labels, obtained perpendicular to the long axis of the hippocampus for assessment of the mesial temporal lobe, shows additional pertinent structures. Specifically, the visual rating system for mesial temporal atrophy score should be assessed at a plane at the level of the mammillary bodies (5).