Imaging the Duodenum Using an Optical Frequency Domain Imaging OFDI Capsule

Study Purpose

The study is being done to assess the tolerability and feasibility of a tethered OFDI capsule to image the duodenum. A total of 24 subjects will be asked to swallow the tethered capsule, while they are awake and unsedated and ask for their feedback. Images will be taken using the OFDI system while the capsule travels from the esophagus into the stomach and into the duodenum.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 16 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Subject must be over 18 years for healthy volunteers.
  • - Subjects must be over 16 years for patients with Celiac disease.
  • - Subject must be able to give informed consent.

Exclusion Criteria:

  • - Subjects with an inability to swallow pills or capsules.
  • - Subjects with esophageal or intestinal fistulas.
  • - Subjects with known esophageal or intestinal strictures resulting in a luminal diameter smaller than the diameter of the capsule.
  • - Subjects with a history of intestinal Crohn's disease.
  • - Women who are pregnant.

Trial Details

Trial ID:

This trial id was obtained from, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Massachusetts General Hospital
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Guillermo Tearney, MD., PhD
Principal Investigator Affiliation Massachusetts General Hospital
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Recruiting
Countries United States

The disease, disorder, syndrome, illness, or injury that is being studied.

Celiac Disease, Healthy
Additional Details

Subjects including healthy volunteers as well as patients with Celiac disease will be recruited and asked to swallow the OFDI capsule while being awake and unsedated. The capsule is attached to a tether which allows the operator to control as well as navigate the capsule as it progresses down the esophagus, through the stomach and into the duodenum using natural propulsive force called peristalsis. As the capsule progresses, multiple 2-dimensional cross sectional images of the duodenum are acquired. Images are analyzed at a later stage.

Arms & Interventions


Experimental: OFDI Capsule Imaging

Subject will swallow the OFDI Capsule and imaging will be performed using the OFDI system.


Device: - OFDI Capsule

Imaging of the duodenum with the OFDI capsule and system

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

Massachusetts General Hospital, Boston, Massachusetts




Massachusetts General Hospital

Boston, Massachusetts, 02114

Site Contact

Anna Gao, RN


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