[Contrast Media] Ep 4 – Biliary System and Contrast Media

This episode examines the anatomy and physiology of the hepatobiliary system, including the liver, gallbladder, and biliary tree. Emphasis is placed on bile production, ductal anatomy, body habitus considerations, and positioning relevance in radiographic imaging. Common pathologies such as cholelithiasis, choledocholithiasis, cholecystitis, and biliary stenosis are reviewed.Contrast agents, technical factors, and major diagnostic procedures — including OCG, IVC, PTC, intraoperative cholangiography, and ERCP — are discussed in the context of clinical imaging practice and patient safety.Content is structured to support radiologic technology programs preparing for imaging coursework and ARRT certification review. This episode aligns with the Procedures content category — Thorax and Abdomen subcategory — and the Patient Care content category — Pharmacology subcategory — of the ARRT Radiography Examination Content Specifications.Audio content is adapted from original instructional material developed by Professor Sanjay Arya, M.S., R.T.(R)(MR) for radiologic technology education. Part of the Contrast Media series — Quantum Imaging Lab.© 2026 Quantum Imaging Lab. All rights reserved.