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Can a quick ultrasound spot Baker's cysts and save radiology resources?

NCT ID NCT07791017

Diagnosis Sponsor: Aarhus University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Aug 28, 2026 · Updated 1 time

Summary

This study tests whether emergency doctors can use a focused ultrasound of the back of the knee to detect Baker's cysts in patients with symptoms that might suggest a deep vein thrombosis (DVT). The goal is to see if this quick scan can reliably identify a Baker's cyst as the cause of symptoms, potentially avoiding more extensive testing. Researchers will measure how many eligible patients enroll, how often the scan is completed successfully, and how accurate it is compared to standard diagnostic methods.

What this could mean

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

Active substance
Focused ultrasound of the popliteal fossa (diagnostic test)
What this could lead to
If this works, emergency doctors could quickly identify Baker's cysts as the cause of leg symptoms, reducing unnecessary tests and saving radiology resources.
What could go wrong
This is a small feasibility study, not a definitive test. The ultrasound depends on operator skill, and results may not generalize to all settings.

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.

Participants

About 150 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2026

Expected to finish

Oct 2026

An estimate. End dates often move.

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.

Who is studied

Adult patients referred to the Emergency Department at Aarhus University Hospital with suspected deep vein thrombosis and undergoing diagnostic evaluation with D-dimer testing and/or complete compression ultrasound of the lower extremity will be included consecutively.

Ages

18 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 ≥ 18 years * Clinical signs and symptoms of DVT, prompting the treating physician to initiate d-Dimer or CCUS diagnostic strategies Exclusion Criteria: * Prior inclusion * FUP performed following d-Dimer or CCUS result already revealed

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Conditions

The condition(s) this trial relates to.

popliteal cyst venous thromboembolism

As listed by the trial registrant

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

Baker's cyst

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Aarhus University Hospital

    RECRUITING

    Aarhus, Denmark