Fig. 1From: The safety and efficacy of percutaneous intraductal radiofrequency ablation in unresectable malignant biliary obstruction: A single-institution experienceLiver function before and after RFA and stent placement. Bar chart shows the results of liver function tests before and after RFA and stent placement. Total bilirubin (TB), direct bilirubin (DB), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) were obtained before, immediately after, and 1 month after RFA and stent placement. Data are means ± standard errors of the meanBack to article page