An observational study in Choledocholithiasis, sponsored by Asian Institute of Gastroenterology, India. Recruiting at 1 site in India. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-01-06.
Sponsored by Asian Institute of Gastroenterology, India · Observational
MRCP and EUS are diagnostically equivalent in detecting CBD stones among patients with intermediate risk, as shown in a landmark RCT. However, MRI-based imaging is power-intensive, requiring large infrastructure and long scan durations. EUS, a less energy-consuming and portable procedure, has the added advantage of enabling same-session ERCP, reducing the need for repeat procedures.
MRCP and EUS are diagnostically equivalent in detecting CBD stones among patients with intermediate risk, as shown in a landmark RCT. However, MRI-based imaging is power-intensive, requiring large infrastructure and long scan durations. EUS, a less energy-consuming and portable procedure, has the added advantage of enabling same-session ERCP, reducing the need for repeat procedures. Prior research confirms that diagnostic EUS generates significantly less CO₂e per procedure compared to radiologic imaging. This study aims to support sustainable diagnostic choices by quantifying their environmental footprint.
109 studies on the registry are indexed under Choledocholithiasis; 24 are open to participants now.
This study's planned enrollment of 200 is close to the median of 200 across 31 observational studies indexed under Choledocholithiasis.
Browse Choledocholithiasis studies →Asian Institute of Gastroenterology, India is the lead sponsor of 135 studies on the registry; 59 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult patients (>18 years - 80years) with suspected choledocholithiasis and classified as intermediate risk per ESGE guidelines, undergoing either EUS or MRCP.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients scheduled for Endoscopic Ultrasound
Patients scheduled for Magnetic Resonance Cholangiopancreatography
Total kg CO₂e per procedure for EUS vs MRCP.
Total kg CO₂e per procedure for EUS vs MRCP.
Time frame: 12 months
Emissions
Emissions per accurate diagnosis Emissions broken down by source (electricity, consumables, travel) Recommendations for sustainable diagnostic practices
Time frame: 12 months
Started Dec 2025 (actual). Primary completion is estimated for Nov 2026, 11 months after the start.
How these figures are worked out, and which studies are left out of them.
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Asian Institute of Gastroenterology, India →