Table 3.

Diagnostic performance of imaging findings in cystic biliary atresia

			Cutoff value	AUC	95% Confidence interval	Sensitivity (%)	Specificity (%)
Single parameter
	US
		TCT	≥4 mm	0.964	0.779-1.000	100	90.9
		Cyst size	≤2.8 cm	0.886	0.673-0.982	80	81.8
		GB mucosal irregularity			100	100
	MRI
		TCT	≥4 mm	0.936	0.739-0.996	90	81.8
		Cyst size	≤2.2 cm	0.900	0.690-0.987	70	100
		Invisible CBD				100	100
Combined parameters
	US
		TCT+GB mucosal irregularity	-	1.000	-	-	-
		Cyst size+GB mucosal irregularity	-	1.000	-	-	-
	MRI
		TCT+invisible CBD	-	1.000	-	-	-
		Cyst size+invisible CBD	-	1.000	-	-	-

AUC, area under the curve; US, ultrasonography; TCT, triangular cord thickness; GB, gall bladder; MRI, magnetic resonance imaging; CBD, common bile duct.