Diagnostic Value of Dynamic Contrast-Enhanced Magnetic Resonance Imaging in the Evaluation of the Biliary Obstruction

Table 2

Signs evaluated with MRI/MRCP and comparison with final diagnoses.

Signs evaluated in bile duct	Result	MRI/MRCP	Final diagnosis	False negative	False positive	Sensit. (%)	Specif. (%)	Accuracy (%)
Dilatation (n: 108)	present	93	97	4	0	96	100	96.3
	absent	15	11
Obstruction (n: 108)	present	88	91	3	0	96.7	100	97.2
	absent	20	17
Cholelithiasis (n: 108)	present	31	34	6	3	82.3	96	91.7
	absent	77	74
Nature of obstruction; (n: 91)	Benign	67	68	3	2	95.6	91.3	94.5
	Malignant	24	23