Fig. 3
From: Simplified intravoxel incoherent motion DWI for differentiating malignant from benign breast lesions
Overview to combined use of D1′ and f1′ as well as D2′ and f2′ parameters. On the ordinate axis D1′ respectively D2′ is given (in units of 10-6 mm2/s), on the abscissa axis f1′ respectively f2′ (in units of 10-3). Blue data points (left diagrams) belong to vital tumour regions of interest (VT-ROIs), red (right diagrams) to hot spot ROIs (HS-ROIs). For each parameter, the cutoff point (see Table 5) is also given (grey lines). It is obvious that differentiation between benign lesions (group A+B) and malignant lesions (group C) is comparable for D1′ and D2′ and for VT-ROIs and HS-ROIs. However, in the case of HS-ROIs, the differentiation improves clearly, if f1′ respectively f2′ is used together with D1′ respectively D2′ (lesions in the quadrant bottom right were assigned as malignant, all other lesions as benign), especially for combination D1′+f1′ with 93.7% correctly identified cases instead of 88.0% (see Table 5)