[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"intracranial-venous-pressures\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:intracranial-venous-pressures":28},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,2,0,[8,48],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":18,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":4,"briefSummary":23,"conditions":24,"keywords":30,"overallStatus":35,"whyStopped":4,"lastUpdateSubmitDate":36,"lastUpdatePostDateStruct":37,"startDateStruct":40,"completionDateStruct":42,"leadSponsor":44,"locationsCount":47},"100651627","this-prospective-observational-study-aims-to-evaluate-the-capability-of-ultra-high-resolution-photon-counting-ct-angiography-uhr-pcd-cta-for-noninvasive-evaluation-of-intracranial-venous-sinus-stents-the-study-will-compare-image-quality-stent-visualization-metal-related-artifacts-and-diagnosti-100651627",false,"NCT07762677","This Prospective Observational Study Aims to Evaluate the Capability of Ultra-high-resolution Photon-counting CT Angiography (UHR PCD-CTA) for Noninvasive Evaluation of Intracranial Venous Sinus Stents. The Study Will Compare Image Quality, Stent Visualization, Metal-related Artifacts, and Diagnosti","Evaluation of Ultra-High-Resolution Photon-Counting CT Angiography for Intracranial Venous Sinus Stent Assessment","Inclusion Criteria:\n\n* Adults aged ≥18 years.\n* History of intracranial venous sinus stent implantation.\n* Undergoing follow-up contrast-enhanced CT angiography after stent -placement.\n* Available clinical and imaging data.\n\nExclusion Criteria:\n\n* Severe motion artifacts affecting image interpretation.\n* Contraindication to iodinated contrast media.\n* Severe renal impairment preventing contrast-enhanced CT examination.\n* Incomplete imaging data.\n* Other conditions preventing reliable assessment of the venous sinus stent.","ALL","18 Years","90 Years",{"count":20,"type":21},200,"ESTIMATED","OBSERVATIONAL","This prospective observational study aims to evaluate the effectiveness of ultra-high-resolution photon-counting CT angiography (UHR PCD-CTA) for noninvasive assessment of intracranial venous sinus stents. The study will compare image quality, stent visualization, metal-related artifacts, and diagnostic accuracy between PCD-CTA and conventional energy-integrating detector CT angiography (EID-CTA).",[25,26,27,28,29],"Intracranial Stenosis","Venous Sinus Stenosis","Stent Implantation","Intracranial Venous Pressures","Intracranial Venous Sinus Stenosis",[31,32,33,34],"Photon-counting CT","Intracranial venous sinus stent","Ultra-high-resolution CT","CT angiography","RECRUITING","2026-08-19",{"date":38,"type":39},"2026-08-20","ACTUAL",{"date":41,"type":39},"2026-01-07",{"date":43,"type":21},"2029-01-07",{"name":45,"class":46},"Xin Lou","OTHER",1,{"id":49,"slug":50,"hasResults":11,"nctId":51,"briefTitle":52,"officialTitle":53,"acronym":4,"eligibilityCriteria":54,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":55,"enrollmentInfo":56,"targetDuration":4,"studyType":58,"phases":59,"briefSummary":61,"conditions":62,"keywords":63,"overallStatus":35,"whyStopped":4,"lastUpdateSubmitDate":65,"lastUpdatePostDateStruct":66,"startDateStruct":68,"completionDateStruct":70,"leadSponsor":72,"locationsCount":47},"100358584","prospective-measurement-of-normal-venous-sinus-pressures-100358584","NCT03948971","Prospective Measurement of Normal Venous Sinus Pressures","Venous Sinus Pressures in Normal Individuals","Inclusion Criteria:\n\n* Candidates for elective cerebral arteriography\n\nExclusion Criteria:\n\n* All patients with active, or a history of, intracranial venous pathology (arteriovenous malformation, arteriovenous fistulae, idiopathic intracranial hypertension, venous sinus thrombosis).\n* Patients with severe daily headaches or symptoms of idiopathic intracranial hypertension will also be excluded.\n* Body mass index \\> 35.\n* Known diagnosis of heart failure or pulmonary hypertension.\n* Pregnant women will be excluded due to the radiation risk associated with Angiogram and Venogram.","60 Years",{"count":57,"type":21},10,"INTERVENTIONAL",[60],"NA","The purpose of this research is to document normal intracranial venous sinus pressures. Participants who need to have a cerebral angiogram to evaluate a medical problem not related to Idiopathic Intracranial Hypertension (IIH) will be invited to participate. Participation in this research will not require any extra visits. The intervention will take place in the interventional radiology suite when the subject has an angiogram. IIH is a condition that causes increased pressure in the brain in the absence of a tumor or other diseases that may be causing symptoms. Symptoms include headaches and visual disturbances not explained by other things. In IIH there is a narrowing in the sinuses of the brain that causes the increased pressure.",[28],[64],"cerebral arteriography","2026-05-22",{"date":67,"type":39},"2026-05-26",{"date":69,"type":39},"2020-01-13",{"date":71,"type":21},"2027-05",{"name":73,"class":46},"Wake Forest University Health Sciences"]