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Can a new CT scan see brain stents clearly enough to replace an invasive test?

NCT ID NCT07762677

Knowledge-focused Sponsor: Xin Lou 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 13, 2026 · Last updated Aug 21, 2026 · Updated 3 times

Summary

This study tests whether a new type of CT scan, called ultra-high-resolution photon-counting CT angiography, can accurately check whether stents placed in the brain's venous sinuses are still open. It compares this new scan to the standard CT method and to the more invasive DSA procedure, which is currently the gold standard. The study involves 200 adults who have had such a stent placed and are due for a follow-up scan. The goal is to see if the new CT can provide clear images with fewer metal artifacts, potentially offering a safer and more comfortable way to monitor these stents.

What this could mean

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

Active substance
ultra-high-resolution photon-counting CT angiography (UHR PCD-CTA)
What this could lead to
If this imaging technique proves accurate, it could offer a safer, noninvasive way to check whether venous sinus stents remain open, potentially reducing the need for invasive DSA procedures.
What could go wrong
This is an observational study, not a treatment trial, so it won't change outcomes directly. The new CT method may not match DSA's accuracy in all cases, and image quality can be affected by motion or other factors.

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 200 people

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

Started

Jan 2026

Expected to finish

Jan 2029

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

Patients with symptomatic intracranial venous sinus stenosis

Ages

18 to 90 years

Sex

Anyone

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: * Adults aged ≥18 years. * History of intracranial venous sinus stent implantation. * Undergoing follow-up contrast-enhanced CT angiography after stent -placement. * Available clinical and imaging data. Exclusion Criteria: * Severe motion artifacts affecting image interpretation. * Contraindication to iodinated contrast media. * Severe renal impairment preventing contrast-enhanced CT examination. * Incomplete imaging data. * Other conditions preventing reliable assessment of the venous sinus stent.

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Conditions

The condition(s) this trial relates to.

cerebral artery stenosis

As listed by the trial registrant

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

Intracranial stenosis Intracranial venous pressures Intracranial venous sinus stenosis Stent implantation Venous sinus stenosis

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

  • Chinese PLA General Hospital

    RECRUITING

    Beijing, Beijing Municipality, 100853, China

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