Figure 1

Colour overlays. Images of test subjects as shown to readers. Row a: grey scale images of a control subject. Row b: same sections as shown in a) with a colour overlay indicating the size rank of the labelled structures. Most structures are in the medium range (transparent overlay). The left cortex is among the largest, as shown by the yellow label. Row c: subject with AD. Row d: same sections as c) with colour overlay. The left cortical volume is small, while the right lateral ventricle is large.