Can diffusion-weighted imaging predict tumor grade and expression of Ki-67 in breast cancer? A multicenter analysis

Table 3 Results of ROC analysis

Ki-67 expression threshold	ADC threshold	Sensitivity	Specificity	AUC	Positive predictive value	Negative predictive value
≥ 10%	0.951	0.704	0.542	0.644	0.267	0.885
≥ 20%	0.913	0.700	0.494	0.613	0.498	0.696
≥ 30%	0.913	0.639	0.512	0.590	0.712	0.430
≥ 40%	0.821	0.808	0.366	0.576	0.844	0.311
≥ 50%	0.821	0.807	0.413	0.600	0.892	0.263

ISSN: 1465-542X