Intraductal ultrasound diagnosis of biliary tract strictures (IDUS)

Intraductal ultrasound (IDUS) is an advanced diagnostic procedure used to evaluate biliary tract strictures, providing detailed images of the bile ducts. During IDUS, a thin ultrasound probe is inserted through an endoscope into the bile ducts, allowing for high-resolution imaging from within the duct itself. This technique is especially useful for distinguishing between benign and malignant strictures, guiding further treatment decisions. IDUS is often performed in conjunction with endoscopic retrograde cholangiopancreatography (ERCP) to enhance diagnostic accuracy. The procedure is minimally invasive, typically done under sedation, and allows for precise assessment of the bile ducts, aiding in the early detection and treatment of serious biliary conditions.