The Hepatic Wedge Pressure and Venogram vs. the Intraparenchymal Liver Pressure and Venogram

Percutaneous hepatic intraparenchymal and hepatic wedge studies, including venography and pressure measurements, were compared. Both techniques provide almost identical radiographic information in most cases. Although a percutaneous transthoracic intraparenchymal study is simpler to perform, the hepatic wedge technique (via the femoral vein) is subject to fewer artifacts of pressure measurement and also allows evaluation of free hepatic vein and inferior vena caval pressures.