(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Figure 4: Different AIFs were determined for eight subjects in (a)–(h). The artery with weighted-ICA (solid dark gray line); the average with manual ROI (solid black line); and the surrounding tissue with weighted-ICA (solid light gray line). This figure also shows the result.