Dynamic Cerebral Contrast-enhanced Perfusion MRI - Biomedical Signal Analysis: Contemporary Methods and Applications - page 318

N=2 N=3 N=4

N=17 N=18 N=19

N=23 N =24 N=25

Figure 11.12
Cluster assignment maps for cluster numbers corresponding to the optimal cluster
number K ∗ and K = K ∗ ± 1. The cluster assignment maps correspond to the
cluster-specific concentration-time curves exhibiting the minimum rCBV.

ROC analysis shows that rCBV outperforms MTT with regard to its
diagnostic validity when compared to the conventional analysis serving
as the gold standard in this study, as can be seen from the larger area
under the ROC curve for rCBV.