Percutaneous Transhepatic Cholangiogram

Excerpt

Percutaneous transhepatic cholangiography (PTC) is a procedure performed for diagnostic and/or therapeutic purposes by first accessing the biliary tree with a needle and then usually shortly after that with a catheter (percutaneous biliary drainage or PBD). At some point during the procedure, contrast is injected into one or more bile ducts (cholangiography) and also possibly into the duodenum. PTC may be performed with fluoroscopic guidance only or also with ultrasound (US) guidance.