Figure 2. The cortical PIB DVR values in PIB-positive MCI converters (closed circles, n = 29), PIB-negative MCI converter (open circles, n = 1), PIB-positive stable MCI patients (closed triangles, n = 22), and PIB-negative stable MCI patients (open triangles, n = 16) at baseline and follow-up.

Data are presented as mean ± SD. *Statistically significant difference from the PIB-negative stable MCI patients by multiple comparisons post hoc tests (p<0.01).