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Laser ruler for colon polyps could sharpen cancer risk checks

NCT ID NCT05489380

Diagnosis Sponsor: Radboud University Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested a new laser-based device (AccuMeasure) to measure the size of colon polyps during a colonoscopy. Accurate polyp size is important because it helps doctors decide how often patients need follow-up screenings to prevent colorectal cancer. The study involved 138 adults and compared the laser measurements to standard methods like optical estimates and biopsy forceps. The goal was to see if the laser device reduces measurement differences between doctors and improves surveillance recommendations.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
AccuMeasure laser-based polyp measurement device
What this could lead to
If successful, this device could help doctors more accurately measure polyps during colonoscopy, leading to better surveillance intervals and potentially reducing the risk of colorectal cancer.
What could go wrong
This is a small, completed study with 138 participants, so results may not apply to everyone. The device may not be more accurate than current methods, and there is always a risk of measurement errors or device issues.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

138 people

The number who actually took part.

Started

Jun 2023

Finished

Mar 2026

Lead sponsor

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * • Adult patients (\>18 years) * Scheduled for screening, surveillance, or diagnostic colonoscopy * Polyps of all forms ≤ 25mm as assessed by the endoscopist Exclusion Criteria: * • Therapeutic colonoscopy; * Inflammatory bowel disease (IBD); * American Society of Anesthesiologists (ASA) score of \>3; * Inadequately corrected anticoagulation disorder or anticoagulation medication use; * Inability to provide informed consent; * Inadequate bowel preparation (Boston bowel preparation scale score \[BBPS\] \<2 per segment); * No polyps identified during colonoscopy or only small (\<5mm) hyperplastic rectal polyps; * Intraprocedural complications, not caused by the study device.

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Conditions

The condition(s) this trial relates to.

polyp of large intestine

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Colorectal polyp

Contacts and locations

Locations

  • Indiana University Hospital

    Indianapolis, Indiana, 46202, United States

  • NYU Langone Health

    New York, New York, 330306, United States

  • Radboud university medical center

    Nijmegen, Gelderland, 6525GA, Netherlands

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