The utility of measuring the apparent diffusion coefficient for peritumoral zone in assessing infiltration depth of endometrial cancer

Table 3 Diagnostic performance of deep myometrial invasion assessment by ADC cutoff value and visual inspection of peritumoral zone

Method	Findings				Acc	Az	Sensitivity (95% CI)	Specificity (95% CI)	NPV (95% CI)	PPV (95% CI)
Method	TP	FP	FN	TN	Acc	Az	Sensitivity (95% CI)	Specificity (95% CI)	NPV (95% CI)	PPV (95% CI)
ADC cutoff	10	3	7	38	0.83	0.76	0.59	0.93	0.84	0.77
ADC cutoff	10	3	7	38	0.83	0.76	(0.33–0.81)	(0.79–0.98)	(0.70–0.93)	(0.46–0.94)
Visual inspection	12	8	5	33	0.78	0.76	0.71	0.80	0.87	0.60
Visual inspection	12	8	5	33	0.78	0.76	(0.44–0.89)	(0.65–0.91)	(0.71–0.95)	(0.36–0.80)

Data are means and numbers in parentheses are 95% confidence intervals
ADC Apparent diffusion coefficient, Az Area under the receiver operating characteristic curve, Acc Accuracy, NPV Negative predictive value, PPV Positive predictive value, CI Confidence interval, TP True-positive, FP False-positive, FN False-negative, TN True-negative

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