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Related Concept Videos

Endoscopic Procedures V: ERCP01:26

Endoscopic Procedures V: ERCP

Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
Patient...
Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

Ultrasound II: Endoscopic Ultrasound and FibroScan

Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...

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Related Experiment Video

Updated: May 20, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
07:44

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction

Published on: March 25, 2022

Endoscopic retrograde cholangioscopy and advanced biliary imaging.

Amrita Sethi1

  • 1Division of Gastroenterology and Hepatology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA. as3614@columbia.edu

Gastrointestinal Endoscopy Clinics of North America
|July 4, 2012
PubMed
Summary

Advanced endoscopic retrograde cholangioscopy techniques offer new ways to image the bile ducts. These methods improve the diagnosis of biliary strictures and lesions by providing detailed visualization and in vivo histology.

Related Experiment Videos

Last Updated: May 20, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
07:44

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction

Published on: March 25, 2022

Area of Science:

  • Gastroenterology and Hepatology
  • Medical Imaging Technologies

Background:

  • Endoscopic retrograde cholangioscopy (ERC) is crucial for diagnosing biliary tract diseases.
  • Traditional ERC imaging has limitations in detailed tissue characterization.

Purpose of the Study:

  • To describe advanced biliary imaging techniques within ERC.
  • To highlight their combined utility in diagnosing biliary strictures and lesions.

Main Methods:

  • Direct visualization using white light and advanced modalities like narrow band imaging (NBI) and autofluorescence.
  • In vivo histological imaging via confocal endomicroscopy.
  • Cross-sectional imaging with intraductal ultrasonography (IDUS) and optical coherence tomography (OCT).

Main Results:

  • These techniques provide multi-modal imaging of biliary epithelium.
  • Confocal endomicroscopy allows for in vivo histological assessment.
  • IDUS and OCT offer cross-sectional views of biliary structures.

Conclusions:

  • Advanced ERC imaging modalities offer comprehensive visualization of the biliary tract.
  • The integration of these techniques enhances the diagnostic accuracy for biliary strictures and lesions.
  • These methods represent a significant advancement in the endoscopic diagnosis of hepatobiliary diseases.