Table 4.

Differentiation capability of ADC value for MRI-detectable benign and malignant breast diseases ( n  = 49)

b value (s/mm 2 )	Mean ADC of benign disease (×10 −3  mm 2 /s)	Mean ADC of malignant disease (×10 −3  mm 2 /s)	Sensitivity	Specificity	Positive predictive value	Positive likelihood ratio
400	1.85 ± 0.86	1.36 ± 0.53	82.8%	90.0%	92.3%	8.28
600	1.79 ± 1.03	1.21 ± 0.45	86.2%	85.0%	86.2%	5.74
800	1.66 ± 0.90	1.11 ± 0.37	82.8%	90.0%	92.3%	8.28

ADC, apparent diffusion coefficient; MRI, magnetic resonance imaging.