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Fig. 1C. —Drawings illustrate three approaches to access intrahepatic portosystemic venous shunts. For retrograde transcaval obliteration, two catheters are retrogradely advanced into portal venous system through shunt vessel (arrowhead) via bilateral transfemoral venous access. One catheter (open arrow), which is advanced into main portal vein through shunt, is straight catheter used for portography and to measure portal venous pressure during procedure. Other catheter (solid arrow) is used to place embolic materials.

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