FIGURE 5.

SUVR time courses (symbols), DVR estimated directly by Logan regression with reference region inputs (horizontal solid lines), and DVR estimated indirectly by $V_{\text{T}}/V_{\text{T}}^{\text{ref}}$ from compartmental modeling with arterial inputs (horizontal dashed lines) for control subject (subject 3) and MCI subject (subject 9). CB = cerebellum; PC = parietal cortex; PCg = posterior cingulate gyrus; MTC = mesial temporal cortex.