Three-dimensional contrast-enhanced MR angiography in diagnosis of portal vein involvement by hepatic tumors

Table 1 Surgical-pathologic findings of portal vein involvement

	Type of involvement
	Total involved	Encasement	Occlusion	Tumor thrombosis	Normal
Main PV	12	0	0	12	50
Left PV	18	3	8	7	44
Right PV	19	4	5	10	43
Total	49	7	13	29	137

Note: Data are number of cases. PV is portal vein.

Table 2 Relationship between 3-dimensional contrast-enhanced MR angiography diagnosis of portal vein involvement and surgical-pathologic findings

	True positive	True negative	False negative	False positive	Sensitivity (%)	Specificity (%)	Positive Predictive (%)	Negative predictive (%)
Main PV	12	50	0	0	100	100	100	100
Left PV	18	42	0	2	100	95	90	100
Right PV	18	43	1	0	95	100	100	98
Total	48	135	1	2	98	99	96	99

Note: Data are number of cases except otherwise indicated. PV is portal vein.