Table 2. Vascular reading signs found by PTP and 3D ultrasound. The number of positive findings obtained by four reviewers: two for PTP and two for 3D ultrasound.

	PTP				3D ultrasound
	Cirrhosisa		IPHa		Cirrhosisa		IPHa
	Reviewer I	Reviewer III	Reviewer I	Reviewer III	Reviewer II	Reviewer IV	Reviewer II	Reviewer IV
A	8 (72.7%)	11 (100%)	0	0	11 (100%)	11 (100%)	0	0
a	0	0	5 (100%)	5 (100%)	0	0	5 (100%)	5 (100%)
B	3 (27.3%)	8 (72.7%)	0	0	2 (18.2%)	2 (18.2%)	0	0
b	0	0	2 (40%)	4 (80%)	0	0	4 (80%)	4 (80%)
C	9 (81.8%)	2 (18.2%)	0	0	11 (100%)	11 (100%)	0	0
c	0	0	3 (60%)	2 (40%)	0	0	3 (60%)	3 (60%)
D	11 (100%)	11 (100%)	0	0	11 (100%)	9 (81.8%)	0	0
d	0	0	5 (100%)	5 (100%)	0	0	0	0
E	10 (90.9%)	11 (100%)	0	0	2 (18.2%)	1 (9.1%)	0	0
e	0	0	4 (80%)	4 (80%)	0	0	5 (100%)	5 (100%)
F	5 (45.5%)	6 (54.5%)	0	0	6 (54.5%)	9 (81.8%)	0	0
f	0	0	5 (100%)	4 (80%)	0	0	5 (100%)	5 (100%)

IPH, idiopathic portal hypertension; PTP, percutaneous transhepatic portography; 3D, three-dimensional.

A, some winding or distortion in large intrahepatic portal branches; B, peripheral vessels were more or less straight with minimal winding; C, peripheral vessels were divided at regular acute angles in most places; D, there was no crossing over or abrupt cut-off of the vessels; E, contrast medium reached the periphery without stopping short of the liver capsule or leaving an avascular area beneath the liver surface; F, occasional small irregularities along portal branches suggesting compression by regenerating nodules; a, paucity of medium-sized portal branches; b, irregular and often obtuse-angled division of peripheral branches; c, occasional abrupt interruptions of peripheral branches; d, an avascular area beneath the liver surface; e, non-opacification of some of the large intrahepatic portal branches and of their periphery; f, increase in the very fine vasculature around large intrahepatic portal branches.

^aFinal diagnosis.