Green diagnosis: study pits EUS against MRCP to see which gallstone test has a smaller carbon footprint
NCT ID NCT07283185
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares the carbon footprint of two tests used to diagnose gallstones: endoscopic ultrasound (EUS) and magnetic resonance cholangiopancreatography (MRCP). Both are equally accurate, but MRCP uses more energy and larger machines. Researchers will measure the total greenhouse gas emissions from each procedure, including electricity, supplies, and patient travel. The goal is to find out which test is kinder to the environment without compromising care.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If this trial succeeds, it could help hospitals choose more eco-friendly diagnostic methods for gallstones, reducing healthcare's climate impact.
- What could go wrong
- This is a small, early-stage study focused on environmental impact, not patient outcomes. Results may not apply to other settings or countries.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Nov 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Adult patients (\>18 years - 80years) with suspected choledocholithiasis and classified as intermediate risk per ESGE guidelines, undergoing either EUS or MRCP.
- Ages
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18 to 80 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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AIG Hospitals
RECRUITINGHyderabad, Telangana, 500032, India
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