Laser-based sizing of GI lesions during endoscopies
Official title: Lesion Size Measurement During Gastrointestinal Endoscopies
Run by Centre hospitalier de l'Université de Montréal (CHUM) · NCT07770425 · Data updated 2026-11-12
This study tests whether the AccuMeasure laser tool gives more accurate and reliable lesion size measurements during colonoscopies for adults with colon polyps or Crohn’s disease than traditional endoscopic estimates.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 3000 (estimated) |
| Sponsor | Centre hospitalier de l'Université de Montréal (CHUM) Academic / other |
| Locations | 1 site (Montreal, Quebec) |
| Status | Recruiting |
| Started | May 9, 2025 |
| Main results expected | May 2027 |
| Study ends | November 2027 |
| Registry record updated | August 18, 2026 |
| Trial ID | NCT07770425 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18+) undergoing GI endoscopy at CHUM who consent to participate.
✕Probably not a fit
Patients whose lesion measurements do not show improved accuracy or who do not benefit from the technology’s readings may not experience direct advantages.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This prospective observational study compares laser-based measurements from AccuMeasure with traditional visual estimates and other endoscopic measurements taken during standard colonoscopies. Participants are adults undergoing GI endoscopy at CHUM, with data collected by board-certified gastroenterologists or supervised trainees. Lesion sizes will be categorized into six groups to capture a range of inflammatory and non-inflammatory GI lesions. The study also looks at how AccuMeasure readings relate to clinical endpoints such as endoscopic subscores, symptom remission measures, and fecal calprotectin levels. No changes to routine care are required for participation.
Why it matters
Potential benefit: If successful, AccuMeasure could improve the precision of lesion sizing during endoscopy, potentially aiding decision-making and monitoring of GI diseases.
How similar studies have gone: Prior work with laser-based measurement tools has shown promise in accuracy, but this study will provide disease- and lesion-type specific data in routine endoscopy.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adult patients (18 years and older) * Patients undergoing gastrointestinal endoscopy procedures Exclusion Criteria: * Minors: Patients under 18 years of age. * Patients who do not provide informed consent. * Patients undergoing endoscopy on an emergency basis (defined as urgent diagnostic or therapeutic endoscopy performed on the gastrointestinal (GI) tract to address potentially life-threatening conditions or severe symptoms that require immediate medical attention). * An American Society of Anesthesiologists (ASA) physical status classification greater than 3.
Where it's running
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Centre Hospitalier de l'Université de Montréal
Montreal, Quebec, Canada Recruiting
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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.