What is Intestinal Ultrasound?
Intestinal Ultrasound (IUS) is a non-invasive imaging technique used to visualize the intestines and surrounding structures in real-time. It is particularly valuable in diagnosing and monitoring inflammatory bowel diseases like Crohn's disease and ulcerative colitis, offering a radiation-free alternative to other imaging methods.
Getting Started with IUS
iUSCAN Launches a Fellows' Intestinal Ultrasound Training and Certification Pathway
iUSCAN partners with the AGA to launch a training and certification pathway for adult and pediatric GI fellows and advanced IBD fellows in North America.
Blueprint for Building an IUS Program: From Passion to Practice
How one clinician turned a vision into a transformative intestinal ultrasound program - and how you can too.
The Physician's Guide to Intestinal Ultrasound
A sweeping guide on the basics of intestinal ultrasound from clinical practice to research, geared towards physicians considering learning intestinal ultrasound for their practice.
For Patients
Intestinal Ultrasound is Game-Changing Diagnostic Screening Tool
Learn about intestinal ultrasound as a diagnostic screening tool, with highlights from a Canadian research study.
IUS vs. MRE in Crohn's Disease
This blog post summarizes key findings from the METRIC trial, a multicenter comparison of the accuracy of radiologist performed IUS and MRE in adults with Crohn's disease.
Intestinal Ultrasound Ushers in a New Era of Pediatric IBD Care
This article summarizes a guide to using intestinal ultrasound in children published by the Pediatric Committee of the International Bowel Ultrasound Group.
Past Webinars
IUS Monthly: September 2025
Watch the IUS Monthly September 2025 Webinar on the use of intestinal ultrasound as a diagnostic tool in non-IBD pathology, bridging pediatric and adult medicine.
IUS Monthly: October 2025
Watch the IUS Monthly October 2025 Webinar on the utility of intestinal ultrasound in children and adults with inflammatory bowel disease.
IUS Monthly: August 2025
Watch the IUS Monthly August 2025 Webinar on the use of intestinal ultrasound in Crohn's disease and in the detection and monitoring of penetrating complications.
Get Certified
IBUS Curriculum - An accredited training program
The main objective of this training program is to learn standardized, high quality intestinal ultrasound technique.
The International Bowel Ultrasound Group (IBUS) curriculum endorsed by iUSCAN consists of three educational components.
The IBUS curriculum is a complete program, developed to be completed consecutively within a maximum time-frame of two years.
Case Studies
IUS Monthly: Postoperative Crohn's Disease
IUS Monthly case demonstrating how intestinal ultrasound can be used as a monitoring tool for postoperative Crohn's disease recurrence and assessment of complications, such as stricture formation.
IUS Monthly: Acute Severe Ulcerative Colitis
IUS Monthly case highlighting the role of intestinal ultrasound in monitoring acute severe ulcerative colitis.
IUS Monthly: Pediatric Isolated Small Bowel Crohn's Disease
IUS Monthly case highlighting the role of intestinal ultrasound as a diagnostic screening tool in pediatric small bowel Crohn's disease.
Research Papers
Intestinal Ultrasound for the Pediatric Gastroenterologist: A Guide for Inflammatory Bowel Disease Monitoring in Children
Amelia Kellar, MD, MSc, Michael Dolinger, MD, MBA, and Kerri Novak, MD, MSc, et al., on behalf of the IBUS Pediatric Committee
Bedside Intestinal Ultrasound Performed in an Inflammatory Bowel Disease Urgent Assessment Clinic Improves Clinical Decision-Making and Resource Utilization
Joelle St-Pierre, MD, PhD, Maxime Delisle, MD, and Hengameh Kheirkhahrahimabadi, MD et al., on behalf of IBUS
Prospective, multicenter, international, observational cohort study evaluating the use of iUS to improve IBD care pathways during the COVID-19 pandemic
Ultrasonography Tight Control and Monitoring in Crohn’s Disease During Different Biological Therapies: A Multicenter Study
Emma Calabrese, MD, Antonio Rispo, MD, Francesca Zorzi, MD, et al.
Systematic Review: Defining, Diagnosing and Monitoring Small Bowel Strictures in Crohn's Disease on Intestinal Ultrasound
Cathy Lu, MD, Ryan Rosentreter, MD, and Maxime Delisle, MD, et al., The STAR consortium