NCT07769814Recruiting
Photon-counting CT for Intracranial Stent Assessment
Evaluation of Ultra-high Resolution Photon-counting CT Angiography for Intracranial Stent Assessment: A Prospective Diagnostic Study With Digital Subtraction Angiography as Reference Standard
Source: ClinicalTrials.gov · Last updated 18 Aug 2026
Brief summary (registry, in English)
Intracranial atherosclerotic disease is an important cause of ischemic stroke, and intracranial stent implantation is increasingly used for patients with severe stenotic lesions. Evaluation of stent patency and detection of in-stent restenosis are essential during follow-up. Digital subtraction angiography (DSA) remains the reference standard for intracranial stent assessment; however, it is an invasive procedure associated with potential complications and radiation exposure. Conventional CT angiography may be limited by stent-related artifacts, including blooming artifact and beam-hardening effects, which can impair accurate evaluation of the stent lumen.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 200 (estimated)
- First submitted
- 8 Aug 2026
- Start date
- 7 Jan 2026
- Primary completion date
- 7 Jan 2029
- Lead sponsor
- Xin Lou
- Diseases
- Stroke
- NCT number
- NCT07769814
What you commit to
- Study type: Observational
- Planned participants: 200
- From 7 Jan 2026 to the primary completion date, 7 Jan 2029
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other
- Severe motion artifacts;
- Poor contrast enhancement;
- Incomplete clinical or imaging data.
Who the study is looking for
- Age ≥18 years;
- Patients with previously implanted intracranial arterial stents;
- Undergoing follow-up CTA examination;
- Available imaging data for analysis.
Age in the registry: 5 years to 90 years · Sex: All
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Chinese PLA General Hospital Coordinator of this site? Confirm its status | Beijing | China | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.