Photon-counting CT scans to check brain artery stents after stroke-related narrowing
Tests a new CT scan for checking stents in narrowed brain arteries.
Plain-language title generated from the registry record
Registry title: Photon-counting CT for Intracranial Stent Assessment
Key facts
- Where
- Beijing, ChinaSee the site
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 5 and 90 years old?
Source: NCT07769814, who can take part
Where in China
- Chinese PLA General HospitalBeijing, ChinaTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Xin Lou
- Trial code
- NCT07769814
- Record updated
- 18 August 2026
- Original description
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.Read full original descriptionShow less
Evaluation of Ultra-high Resolution Photon-counting CT Angiography for Intracranial Stent Assessment: A Prospective Diagnostic Study With Digital Subtraction Angiography as Reference Standard
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.
Inclusion: Age ≥18 years; Patients with previously implanted intracranial arterial stents; Undergoing follow-up CTA examination; Available imaging data for analysis.
Exclusion: Severe motion artifacts; Poor contrast enhancement; Incomplete clinical or imaging data.