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Background and Aim: To clarify the efficacy of carbon dioxide (CO2) as a contrast material to evaluate portal vein images by percutaneous transhepatic portography (PTP).
Methods: Twenty patients (38–76 years; male 13, female 7) with chronic liver diseases were the subjects of this prospective study. Portal venous opacification by PTP was compared between CO2‐based images and iodinated contrast medium...
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