Fig 1.
Assessment of thrombosis in the splanchnic venous system.
Five regions of the splanchnic venous system were assessed: The right (1) and left (2) intrahepatic portal vein, the main trunk of the portal vein (3), the splenic vein (4) and the superior mesenteric vein (5). For each of the vessels a classification into three grades of thrombosis was made: no thrombosis (a), partial thrombosis (b) or complete thrombosis (c).
Table 1.
Patient characteristics.
Fig 2.
The bars indicate the proportion of patients in which the five vessels of the splanchnic venous system investigated were graded as patent, partial thrombosis and complete thrombosis by the portographic gold standard that served as reference for CDUS and CT.
Fig 3.
Consistency of CDUS and CT with portographic findings.
The bars indicate the proportion of examinations in which findings of CDUS and CT were consistent with the portographic gold standard, id est grading of thrombosis (patent vessel, partial thrombosis, complete thrombosis) was identical in CDUS/CT and portography.
Table 2.
Cohen’s kappa of CDUS and CT with regard to portography as gold standard.
Fig 4.
Example of divergent findings in CDUS and CT.
While the main trunk of the portal vein was graded as ‘partial thrombosis’ by CDUS (A), since thrombotic material could be identified in the vessel lumen but a preserved portal venous flow signal was detectable, it was graded as ‘complete thrombosis’ by CT (B) and portography (C), as both showed thrombotic occlusion of the vessel lumen without contrast agent flow.