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A sharper CT scan could replace invasive stent checks

NCT ID NCT07769814

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tests whether an ultra-high-resolution CT scan, called photon-counting CT angiography, can accurately detect narrowing inside brain stents. The trial involves 200 adults who have had a stent placed in a brain artery and are due for a follow-up check. The new CT scan's results will be compared against the standard invasive angiogram (DSA) to see if it can reliably spot significant blockages, potentially offering a safer, less invasive way to monitor stent health.

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 detector CT angiography (UHR PCD-CTA)
What this could lead to
If successful, this could provide a safer, non-invasive alternative to DSA for monitoring stent patency in patients with intracranial atherosclerosis, reducing the need for invasive procedures.
What could go wrong
The study is relatively small and early, and the accuracy of the new CT technique may not match DSA in all cases. There is also a risk of radiation exposure from the CT scan, though likely lower than DSA.

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 intracranial arterial stents

Ages

5 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: 1. Age ≥18 years; 2. Patients with previously implanted intracranial arterial stents; 3. Undergoing follow-up CTA examination; 4. Available imaging data for analysis. Exclusion Criteria: 1. Severe motion artifacts; 2. Poor contrast enhancement; 3. Incomplete clinical or imaging data.

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Conditions

The condition(s) this trial relates to.

cerebral artery stenosis coronary restenosis intracranial arterial disease ischemic stroke

As listed by the trial registrant

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

Intracranial arterial stenosis Intracranial atherosclerotic disease (ICAD) Ischemic stroke Stent restenosis

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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