Comparing the carbon footprint of endoscopic ultrasound versus MRCP for suspected common bile duct stones
Official title: Prospective Comparison of the Carbon Footprint of Endoscopic Ultrasound (EUS) vs Magnetic Resonance Cholangiopancreatography (MRCP) for Evaluation of Suspected Choledocholithiasis
Run by Asian Institute of Gastroenterology, India · NCT07283185 · Data updated 2026-11-12
This project will test whether endoscopic ultrasound (EUS) produces a smaller carbon footprint than MRCP when used to check for common bile duct (CBD) stones in adults with intermediate risk.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 80 Years |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | Asian Institute of Gastroenterology, India Academic / other |
| Locations | 1 site (Hyderabad, Telangana) |
| Status | Recruiting |
| Started | December 1, 2025 |
| Main results expected | November 2026 |
| Study ends | November 2026 |
| Registry record updated | January 6, 2026 |
| Trial ID | NCT07283185 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (age ≥18) with an intermediate likelihood of CBD stone per ESGE guidelines who are undergoing either MRCP or EUS are the ideal candidates.
✕Probably not a fit
Patients categorized as high or low likelihood for CBD stone, those with contraindications to either modality, or those undergoing both tests simultaneously would not be expected to benefit from this comparison.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study will measure and compare greenhouse gas emissions (CO2e) associated with diagnostic MRCP and EUS performed for adults with intermediate likelihood of CBD stones at a single tertiary center. Participants are adults referred for either MRCP or EUS per standard clinical care, and the trial will capture energy use, equipment and facility contributions, and downstream procedure needs such as same-session ERCP. The design builds on prior randomized data showing similar diagnostic performance between the two tests and prior work suggesting lower emissions from EUS. Results will be reported as per-procedure carbon footprints to inform more sustainable diagnostic choices.
Why it matters
Potential benefit: If successful, the findings could help clinicians choose a lower-carbon diagnostic option and reduce the environmental impact of care without compromising diagnosis.
How similar studies have gone: A landmark randomized trial has shown MRCP and EUS are diagnostically equivalent for intermediate-risk patients, and prior research has shown diagnostic EUS often produces substantially less CO2e per procedure than radiologic imaging.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥18 years * Intermediate likelihood of CBD stone (per ESGE) * Undergoing either MRCP or EUS for evaluation Exclusion Criteria: * High or low likelihood category (per ESGE) * Undergoing both MRCP and EUS simultaneously * Contraindications to either modality
Where it's running
-
AIG Hospitals
Hyderabad, Telangana, India Recruiting
Study contacts
- Study coordinator: Dr.Hardik Rughwani
- Email: dr.hardikr@aighospitals.com
- Phone: 9426928600
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Hyoscine Butylbromide During Transcystic Papillary Balloon Dilation for Choledocholithiasis
This study tests whether giving hyoscine butylbromide during laparoscopic transcystic papillary balloon dilation helps patients with common bile duct stones by making the procedure faster or easier.
-
Holmium laser versus electrohydraulic lithotripsy for difficult bile duct and pancreatic duct stones
This will test whether a low-power holmium laser works and is as safe as electrohydraulic lithotripsy for adults with large or hard-to-remove bile duct or pancreatic duct stones.
-
Intraductal antibiotic given during ERCP for acute cholangitis
This trial tests whether putting an antibiotic directly into the bile ducts during ERCP, together with standard IV antibiotics, helps adults with mild-to-moderate acute cholangitis recover faster and avoid worsening infection compared with IV antibiotics alone.
-
Early versus late laparoscopic gallbladder removal after clearing common bile duct stones with ERCP
This trial will test whether having your gallbladder removed soon after ERCP or waiting longer gives better outcomes for people who had stones cleared from their common bile duct.
-
One-stage laparoendoscopic approach for gallbladder and common bile duct stones
This trial tests whether a single-operation laparoendoscopic 'rendezvous' approach—combining laparoscopic gallbladder removal with endoscopic bile duct clearance—works safely and effectively for patients with both gallbladder and common bile duct stones.
-
Gallbladder removal versus watchful waiting after bile duct stone removal in older adults
This trial tests whether immediate laparoscopic gallbladder removal or a wait-and-see approach is better for older patients after their common bile duct stones have been removed by ERCP.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.