[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100659101":3},{"organization":4,"outcomesModule":7,"designInfo":72,"detailedDescription":71,"studyPopulation":75,"armGroups":76,"interventions":86,"overallOfficials":91,"centralContacts":96,"locations":101,"responsibleParty":118,"collaborators":71,"id":121,"slug":122,"hasResults":123,"nctId":124,"briefTitle":125,"officialTitle":126,"acronym":71,"eligibilityCriteria":127,"healthyVolunteers":123,"sex":128,"minAge":129,"maxAge":71,"enrollmentInfo":130,"targetDuration":71,"studyType":133,"phases":71,"briefSummary":134,"conditions":135,"keywords":137,"overallStatus":143,"whyStopped":71,"lastUpdateSubmitDate":144,"lastUpdatePostDateStruct":145,"startDateStruct":148,"completionDateStruct":150,"leadSponsor":152,"locationsCount":153},{"fullName":5,"class":6},"Fudan University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":25,"otherOutcomes":71},[9,13,16,19,22],{"measure":10,"description":11,"timeFrame":12},"Time-Averaged Wall Shear Stress (TAWSS)","Time-averaged wall shear stress (TAWSS) will be derived from patient-specific computational fluid dynamics simulations of the lower-extremity arteries. TAWSS will be evaluated across predefined inlet pulsatile velocity and distal peripheral resistance levels. Changes in TAWSS across parameter levels and differences in hemodynamic responses between the PAD and control groups will be analyzed.","During CFD simulation analysis, through January 2027",{"measure":14,"description":15,"timeFrame":12},"Oscillatory Shear Index (OSI)","Oscillatory shear index (OSI) will be derived from patient-specific computational fluid dynamics simulations of the lower-extremity arteries. OSI will be evaluated across predefined inlet pulsatile velocity and distal peripheral resistance levels. Changes in OSI across parameter levels and differences in hemodynamic responses between the PAD and control groups will be analyzed.",{"measure":17,"description":18,"timeFrame":12},"Relative Residence Time (RRT)","Relative residence time (RRT) will be derived from patient-specific computational fluid dynamics simulations of the lower-extremity arteries. RRT will be evaluated across predefined inlet pulsatile velocity and distal peripheral resistance levels. Changes in RRT across parameter levels and differences in hemodynamic responses between the PAD and control groups will be analyzed.",{"measure":20,"description":21,"timeFrame":12},"Endothelial Cell Activation Potential (ECAP)","Endothelial cell activation potential (ECAP) will be derived from patient-specific computational fluid dynamics simulations of the lower-extremity arteries. ECAP will be evaluated across predefined inlet pulsatile velocity and distal peripheral resistance levels. Changes in ECAP across parameter levels and differences in hemodynamic responses between the PAD and control groups will be analyzed.",{"measure":23,"description":24,"timeFrame":12},"Transverse Wall Shear Stress (transWSS)","Transverse wall shear stress (transWSS) will be derived from patient-specific computational fluid dynamics simulations of the lower-extremity arteries. transWSS will be evaluated across predefined inlet pulsatile velocity and distal peripheral resistance levels. Changes in transWSS across parameter levels and differences in hemodynamic responses between the PAD and control groups will be analyzed.",[26,29,32,35,38,41,44,47,50,53,56,59,62,65,68],{"measure":27,"description":28,"timeFrame":12},"Hemodynamic Response of Time-Averaged Wall Shear Stress (TAWSS) to Changes in Distal Peripheral Resistance","Time-averaged wall shear stress (TAWSS) will be evaluated across predefined levels of distal peripheral resistance. Inlet pulsatile velocity will be held constant during the peripheral resistance experiment. Changes in TAWSS across distal peripheral resistance levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":30,"description":31,"timeFrame":12},"Hemodynamic Response of Oscillatory Shear Index (OSI) to Changes in Distal Peripheral Resistance","Oscillatory shear index (OSI) will be evaluated across predefined levels of distal peripheral resistance. Inlet pulsatile velocity will be held constant during the peripheral resistance experiment. Changes in OSI across distal peripheral resistance levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":33,"description":34,"timeFrame":12},"Hemodynamic Response of Relative Residence Time (RRT) to Changes in Distal Peripheral Resistance","Relative residence time (RRT) will be evaluated across predefined levels of distal peripheral resistance. Inlet pulsatile velocity will be held constant during the peripheral resistance experiment. Changes in RRT across distal peripheral resistance levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":36,"description":37,"timeFrame":12},"Hemodynamic Response of Endothelial Cell Activation Potential (ECAP) to Changes in Distal Peripheral Resistance","Endothelial cell activation potential (ECAP) will be evaluated across predefined levels of distal peripheral resistance. Inlet pulsatile velocity will be held constant during the peripheral resistance experiment. Changes in ECAP across distal peripheral resistance levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":39,"description":40,"timeFrame":12},"Hemodynamic Response of Transverse Wall Shear Stress (transWSS) to Changes in Distal Peripheral Resistance","Transverse wall shear stress (transWSS) will be evaluated across predefined levels of distal peripheral resistance. Inlet pulsatile velocity will be held constant during the peripheral resistance experiment. Changes in transWSS across distal peripheral resistance levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":42,"description":43,"timeFrame":12},"Interaction Between Study Group and Hemodynamic Parameter Level for Time-Averaged Wall Shear Stress (TAWSS)","Group-by-parameter-level interactions will be evaluated for time-averaged wall shear stress (TAWSS) to determine whether the TAWSS response to changes in inlet pulsatile velocity or distal peripheral resistance differs between the PAD and control groups.",{"measure":45,"description":46,"timeFrame":12},"Interaction Between Study Group and Hemodynamic Parameter Level for Oscillatory Shear Index (OSI)","Group-by-parameter-level interactions will be evaluated for oscillatory shear index (OSI) to determine whether the OSI response to changes in inlet pulsatile velocity or distal peripheral resistance differs between the PAD and control groups.",{"measure":48,"description":49,"timeFrame":12},"Interaction Between Study Group and Hemodynamic Parameter Level for Relative Residence Time (RRT)","Group-by-parameter-level interactions will be evaluated for relative residence time (RRT) to determine whether the RRT response to changes in inlet pulsatile velocity or distal peripheral resistance differs between the PAD and control groups.",{"measure":51,"description":52,"timeFrame":12},"Interaction Between Study Group and Hemodynamic Parameter Level for Endothelial Cell Activation Potential (ECAP)","Group-by-parameter-level interactions will be evaluated for endothelial cell activation potential (ECAP) to determine whether the ECAP response to changes in inlet pulsatile velocity or distal peripheral resistance differs between the PAD and control groups.",{"measure":54,"description":55,"timeFrame":12},"Interaction Between Study Group and Hemodynamic Parameter Level for Transverse Wall Shear Stress (transWSS)","Group-by-parameter-level interactions will be evaluated for transverse wall shear stress (transWSS) to determine whether the transWSS response to changes in inlet pulsatile velocity or distal peripheral resistance differs between the PAD and control groups.",{"measure":57,"description":58,"timeFrame":12},"Hemodynamic Response of Time-Averaged Wall Shear Stress (TAWSS) to Changes in Inlet Pulsatile Velocity","Time-averaged wall shear stress (TAWSS) will be evaluated across predefined levels of inlet pulsatile velocity while distal peripheral resistance is held constant. Changes in TAWSS across inlet pulsatile velocity levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":60,"description":61,"timeFrame":12},"Hemodynamic Response of Oscillatory Shear Index (OSI) to Changes in Inlet Pulsatile Velocity","Oscillatory shear index (OSI) will be evaluated across predefined levels of inlet pulsatile velocity while distal peripheral resistance is held constant. Changes in OSI across inlet pulsatile velocity levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":63,"description":64,"timeFrame":12},"Hemodynamic Response of Relative Residence Time (RRT) to Changes in Inlet Pulsatile Velocity","Relative residence time (RRT) will be evaluated across predefined levels of inlet pulsatile velocity while distal peripheral resistance is held constant. Changes in RRT across inlet pulsatile velocity levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":66,"description":67,"timeFrame":12},"Hemodynamic Response of Endothelial Cell Activation Potential (ECAP) to Changes in Inlet Pulsatile Velocity","Endothelial cell activation potential (ECAP) will be evaluated across predefined levels of inlet pulsatile velocity while distal peripheral resistance is held constant. Changes in ECAP across inlet pulsatile velocity levels and differences in response patterns between the PAD and control groups will be analyzed.",{"measure":69,"description":70,"timeFrame":12},"Hemodynamic Response of Transverse Wall Shear Stress (transWSS) to Changes in Inlet Pulsatile Velocity","Transverse wall shear stress (transWSS) will be evaluated across predefined levels of inlet pulsatile velocity while distal peripheral resistance is held constant. Changes in transWSS across inlet pulsatile velocity levels and differences in response patterns between the PAD and control groups will be analyzed.",null,{"allocation":71,"interventionModel":71,"interventionModelDescription":71,"primaryPurpose":71,"observationalModel":73,"timePerspective":74,"maskingInfo":71},"CASE_CONTROL","RETROSPECTIVE","Adults who underwent lower-extremity computed tomography angiography (CTA) between January 1 and December 31, 2025, and met the eligibility criteria for either the peripheral artery disease (PAD) group or the healthy control group were retrospectively included. One patient-specific bilateral lower-extremity arterial computational fluid dynamics (CFD) model was constructed for each participant, and each participant and corresponding vascular model were treated as one independent study unit.",[77,82],{"label":78,"type":71,"description":79,"interventionNames":80},"PAD Group","Participants with a clinical diagnosis of lower-extremity peripheral arterial disease and available lower-extremity CTA images suitable for patient-specific three-dimensional arterial reconstruction.",[81],"Other: Computational Fluid Dynamics Simulation",{"label":83,"type":71,"description":84,"interventionNames":85},"Control Group","Participants without clinical evidence of peripheral arterial disease or significant lower-extremity arterial stenosis and with CTA images suitable for patient-specific three-dimensional arterial reconstruction.",[81],[87],{"type":6,"name":88,"description":89,"armGroupLabels":90,"otherNames":71},"Computational Fluid Dynamics Simulation","Patient-specific three-dimensional lower-extremity arterial models will be reconstructed from existing CTA images and analyzed using computational fluid dynamics (CFD). Two independent single-factor simulation experiments will be performed: an inlet velocity experiment, in which the amplitude of the inlet pulsatile velocity waveform is varied while distal peripheral resistance is held constant, and a peripheral resistance experiment, in which distal peripheral resistance is varied while inlet velocity is held constant. These simulations are performed only on computational models and do not involve any clinical intervention, additional examination, or treatment of participants.",[83,78],[92],{"name":93,"affiliation":94,"role":95},"Wan Zhang, MD, PhD","Huadong Hospital","PRINCIPAL_INVESTIGATOR",[97],{"name":93,"role":98,"phone":99,"phoneExt":71,"email":100},"CONTACT","021-62483180-571401","ant0930@163.com",[102],{"facility":103,"status":71,"city":104,"state":105,"zip":106,"country":107,"countryCode":108,"cosmosGeoPoint":109,"geoPoint":114,"contacts":115},"Huadong Hospital, Fudan University","Shanghai","Shanghai Municipality","200040","China","CN",{"type":110,"coordinates":111},"Point",[112,113],121.45806,31.22222,{"lat":113,"lon":112},[116,117],{"name":93,"role":98,"phone":99,"phoneExt":71,"email":100},{"name":93,"role":95,"phone":71,"phoneExt":71,"email":71},{"type":95,"investigatorFullName":119,"investigatorTitle":120,"investigatorAffiliation":5,"oldNameTitle":71,"oldOrganization":71},"Zhijun Bao","Head of Huadong Hospital","100659101","hemodynamic-characteristics-of-peripheral-arterial-disease-using-computational-fluid-dynamics-100659101",false,"NCT07860138","Hemodynamic Characteristics of Peripheral Arterial Disease Using Computational Fluid Dynamics","Analysis of Hemodynamic Characteristics in Peripheral Arterial Disease Based on Computational Fluid Dynamics","Inclusion Criteria:\n\n* Age ≥18 years.\n* Participants who underwent lower-extremity computed tomography angiography (CTA).\n* PAD group: Diagnosis of lower-extremity peripheral artery disease (PAD), defined by a resting ankle-brachial index (ABI) ≤0.90.\n* PAD group: For participants in whom ABI was inconclusive, including ABI \\>0.90 or ABI \\>1.40 due to medial arterial calcification, PAD was confirmed by lower-extremity CTA or Doppler ultrasound showing ≥50% arterial stenosis or complete occlusion.\n* Control group: No symptoms suggestive of lower-extremity ischemia and no definite evidence of lower-extremity arterial stenosis or occlusion on CTA; ABI was used when necessary to further exclude PAD.\n\nExclusion Criteria:\n\n* History of lower-extremity arterial revascularization.\n* Presence of other diseases that could substantially affect lower-extremity hemodynamics.\n* CTA image quality insufficient for three-dimensional vascular reconstruction.","ALL","18 Years",{"count":131,"type":132},14,"ESTIMATED","OBSERVATIONAL","Peripheral arterial disease can reduce blood flow to the legs. This study will examine how blood flow patterns in the leg arteries differ between people with peripheral arterial disease and people without the disease.\n\nResearchers will use existing computed tomography angiography (CTA) images and medical records from participants who previously received CTA as part of routine clinical care. Three-dimensional models of the leg arteries will be created from these images. Computer simulations will then be used to study how changes in blood flow entering the arteries and resistance in smaller downstream blood vessels affect blood flow patterns. The researchers will compare these responses between participants with and without peripheral arterial disease.\n\nThis study uses only existing medical records and images. No new participants will be recruited, and no additional examinations or treatments will be performed for research purposes. The goal is to better understand blood flow characteristics associated with peripheral arterial disease.",[136],"Peripheral Arterial Disease",[138,139,140,141,142],"Computational Fluid Dynamics","Hemodynamics","Wall Shear Stress","Peripheral Vascular Resistance","Inlet velocity waveform amplitude","NOT_YET_RECRUITING","2026-10-02",{"date":146,"type":147},"2026-10-06","ACTUAL",{"date":149,"type":132},"2026-11",{"date":151,"type":132},"2027-01",{"name":5,"class":6},1]