[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100652127":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":12,"centralContacts":16,"locations":26,"responsibleParty":43,"collaborators":10,"id":47,"slug":48,"hasResults":49,"nctId":50,"briefTitle":51,"officialTitle":52,"acronym":10,"eligibilityCriteria":53,"healthyVolunteers":49,"sex":54,"minAge":55,"maxAge":56,"enrollmentInfo":57,"targetDuration":60,"studyType":61,"phases":10,"briefSummary":62,"conditions":63,"keywords":68,"overallStatus":28,"whyStopped":10,"lastUpdateSubmitDate":74,"lastUpdatePostDateStruct":75,"startDateStruct":78,"completionDateStruct":80,"leadSponsor":82,"locationsCount":83},{"fullName":5,"class":6},"Chinese PLA General Hospital","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":10},"Patients with intracranial arterial stents",null,"Patients with previously implanted intracranial arterial stents who underwent follow-up ultra-high-resolution photon-counting CT angiography (UHR PCD-CTA) for evaluation of Stent patency and stent-related abnormalities.",[13],{"name":14,"affiliation":5,"role":15},"Xin Lou, MD.PhD","STUDY_CHAIR",[17,22],{"name":18,"role":19,"phone":20,"phoneExt":10,"email":21},"Jinhao Lyu, MD","CONTACT","+8615903562929","330322990@qq.com",{"name":23,"role":19,"phone":24,"phoneExt":10,"email":25},"Jinying He","+8613854153820","1527012389@qq.com",[27],{"facility":5,"status":28,"city":29,"state":30,"zip":31,"country":32,"countryCode":33,"cosmosGeoPoint":34,"geoPoint":39,"contacts":40},"RECRUITING","Beijing","Beijing Municipality","100853","China","CN",{"type":35,"coordinates":36},"Point",[37,38],116.39723,39.9075,{"lat":38,"lon":37},[41,42],{"name":18,"role":19,"phone":20,"phoneExt":10,"email":21},{"name":23,"role":19,"phone":24,"phoneExt":10,"email":25},{"type":44,"investigatorFullName":45,"investigatorTitle":46,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"SPONSOR_INVESTIGATOR","Xin Lou","Chairman","100652127","photon-counting-ct-for-intracranial-stent-assessment-100652127",false,"NCT07769814","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","Inclusion Criteria:\n\n1. Age ≥18 years;\n2. Patients with previously implanted intracranial arterial stents;\n3. Undergoing follow-up CTA examination;\n4. Available imaging data for analysis.\n\nExclusion Criteria:\n\n1. Severe motion artifacts;\n2. Poor contrast enhancement;\n3. Incomplete clinical or imaging data.","ALL","5 Years","90 Years",{"count":58,"type":59},200,"ESTIMATED","4 Years","OBSERVATIONAL","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.",[64,65,66,67],"Intracranial Atherosclerotic Disease (ICAD)","Intracranial Arterial Stenosis","Stent Restenosis","Ischemic Stroke",[69,70,71,72,73],"Photon-counting CT","Ultra-high-resolution CT","In-stent restenosis","Intracranial stent","CT angiography","2026-08-12",{"date":76,"type":77},"2026-08-18","ACTUAL",{"date":79,"type":77},"2026-01-07",{"date":81,"type":59},"2029-01-07",{"name":45,"class":6},1]