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Can a flash of light reveal how well angioplasty restores blood flow in diabetic feet?

NCT ID NCT07097857

Diagnosis Sponsor: Singapore General Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 18, 2026 · Last updated Aug 19, 2026 · Updated 1 time

Summary

This study explores whether a non-invasive imaging technique called spatial frequency domain imaging (SFDI) can measure changes in blood flow in the feet of people with diabetes who are undergoing angioplasty to treat peripheral arterial disease. Researchers will use SFDI to measure tissue oxygen saturation in the treated foot before and after the procedure, and compare these readings with standard toe pressure measurements. If SFDI works well, it could become a simple, painless way to evaluate the success of revascularization in diabetic patients.

What this could mean

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

Active substance
Spatial frequency domain imaging (SFDI), a non-invasive light-based imaging technique
What this could lead to
If SFDI proves reliable, it could offer a quick, non-invasive way to assess blood flow in diabetic feet before and after angioplasty, potentially improving treatment decisions.
What could go wrong
This is a very small early study (15 participants), so results may not apply broadly. SFDI is experimental for this use, and its accuracy compared to standard methods is still uncertain.

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

15 people

The number who actually took part.

Started

Oct 2024

Finished

Dec 2025

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

21 to 99 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Patients of age 21 years and above with diabetes and undergoing lower limb arterial angioplasty * Willingness to participate in the study and undergo foot physiological assessments using SFDI Exclusion Criteria: * Mentally incompetent, younger than 21 years of age, prisoners, pregnant or breastfeeding women * Patients unable to provide informed consent * Any medical condition which makes the candidate an inappropriate subject for study participation, in the investigator's judgment

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Conditions

The condition(s) this trial relates to.

diabetes mellitus peripheral arterial disease

As listed by the trial registrant

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

Imaging evaluation Peripheral arterial disease(PAD)

Contacts and locations

Locations

  • Singapore General Hospital

    Singapore, SG, 169856, Singapore

More trials for these conditions

Other studies related to the condition(s) this trial covers.