Prospective Comparison of the Carbon Footprint of EUS vs MRCP for Evaluation of Suspected Choledocholithiasis

NCT ID: NCT07283185

Last Updated: 2026-01-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-12-01

Study Completion Date

2026-11-30

Brief Summary

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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.

Detailed Description

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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.

Conditions

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Choledocholithiasis

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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EUS

Patients scheduled for Endoscopic Ultrasound

No interventions assigned to this group

MRCP

Patients scheduled for Magnetic Resonance Cholangiopancreatography

No interventions assigned to this group

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Asian Institute of Gastroenterology, India

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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AIG Hospitals

Hyderabad, Telangana, India

Site Status RECRUITING

Countries

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India

Central Contacts

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Dr.Hardik Rughwani

Role: CONTACT

9426928600

Facility Contacts

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Deepa Shukla, PhD

Role: primary

9953900117

References

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• McAlister S et al. Radiology. 2021. Imaging footprint

Reference Type RESULT

• Lenzen M et al. Lancet Planet Health. 2020. Health care emissions

Reference Type RESULT

• Rughwani H et al. Gut. 2025. Carbon footprint of GIE

Reference Type RESULT

• Jagtap N et al. Gut. 2022. EUS versus MRCP RCT

Reference Type RESULT

Other Identifiers

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EUS vs MRCP-CBD1

Identifier Type: -

Identifier Source: org_study_id

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