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Can a PET scan predict who will suffer chronic leg pain after a DVT?

NCT ID NCT03195777

Knowledge-focused Sponsor: Massachusetts 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Aug 19, 2026 · Updated 2 times

Summary

This study tested whether a special PET/CT scan can predict which patients with deep vein thrombosis (DVT) will later develop post-thrombotic syndrome (PTS), a condition causing chronic leg pain, swelling, and ulcers. Researchers imaged 51 patients shortly after their DVT and followed them for up to 2 years. The goal was to see if inflammation levels in the clot could forecast PTS risk, potentially guiding future treatments.

What this could mean

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

Active substance
FDG (a radioactive tracer used in PET/CT imaging)
What this could lead to
If successful, this imaging approach could help identify DVT patients at high risk for post-thrombotic syndrome, allowing earlier and more targeted treatments.
What could go wrong
This is a small, early-stage observational study (51 participants) focused on prediction, not treatment. The imaging method may not reliably predict PTS in larger, more diverse populations.

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

50 people

The number who actually took part.

Started

Dec 2017

Finished

Jun 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

30 years and older

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: * Age above 30 * Patient presents with a first symptomatic, proximal DVT (with or without concurrent distal DVT or pulmonary embolism). Exclusion Criteria: * Patient has May-Thurner syndrome * Patient has an expected life span of \< 6 months * Patient can't receive anticoagulation therapy * Patient received thrombolytic therapy for the initial treatment of acute DVT * Patient has DVT signs of symptoms that occur more than 1 week prior to presentation, as assessed by clinical history * Renal dysfunction (Serum creatinine \> 1.5 mg/ml or estimated creatinine clearance \< 60 ml/min)

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Conditions

The condition(s) this trial relates to.

post-thrombotic syndrome Postthrombotic Syndrome venous thromboembolism Venous Thrombosis

As listed by the trial registrant

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

Deep venous thrombosis Post-thrombotic syndrome

Contacts and locations

Locations

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114, United States

More trials for these conditions

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