Cholangiography is a diagnostic imaging technique used to visualize the bile duct system and identify abnormalities such as stones, strictures, tumors, and anatomical variations. While the traditional method involves injecting contrast dye into the bile ducts and taking X-ray images, the term is broadly used to encompass several techniques including intraoperative cholangiography during gallbladder surgery, magnetic resonance cholangiopancreatography, and endoscopic retrograde cholangiopancreatography. Ultrasound serves as a complementary tool by assessing bile duct diameter and detecting signs of obstruction, and it is often the first-line study that leads to more specialized cholangiographic procedures when an abnormality is suspected.
Sonography Term