{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=TCD-+cerebral+blood+flow+velocities",
    "query": {
      "intervention": "TCD- cerebral blood flow velocities"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 15,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=TCD-+cerebral+blood+flow+velocities&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T18:13:34.028Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04154865",
      "title": "Exercise in Adolescents With Insulin Resistance",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Hypercapnia",
          "type": "OTHER"
        },
        {
          "name": "Transcranial Doppler",
          "type": "DEVICE"
        },
        {
          "name": "Cycle ergometer",
          "type": "DEVICE"
        },
        {
          "name": "Cognitive Tests",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 15,
      "start_date": "2020-02-28",
      "completion_date": "2021-11-19",
      "has_results": false,
      "last_update_posted_date": "2024-10-03",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04154865"
    },
    {
      "nct_id": "NCT02435082",
      "title": "Vascular Assessment of Regulation Index Arrays Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Concussion"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "NeuroChaos Solutions, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "13 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2015-04",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2016-06-02",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02435082"
    },
    {
      "nct_id": "NCT05547412",
      "title": "Validation of Velocity Curvature Index as a Diagnostic Biomarker Tool for Assessment of Large Vessel Stroke",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stroke",
        "Acute Ischemic Stroke"
      ],
      "interventions": [
        {
          "name": "NovaGuide 2 Intelligent Ultrasound System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "NeuraSignal Inc dba NovaSignal",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2022-09-21",
      "completion_date": "2023-01-31",
      "has_results": true,
      "last_update_posted_date": "2024-04-09",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Chattanooga, Tennessee",
      "locations": [
        {
          "city": "Chattanooga",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05547412"
    },
    {
      "nct_id": "NCT04583163",
      "title": "Variability in Transcranial Doppler Technique in Neuro-Critical Care Patients",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cerebral Aneurysm",
        "Stroke",
        "Vasospasm, Cerebral",
        "Subarachnoid Hemorrhage, Aneurysmal",
        "Aneurysmal Subarachnoid Hemorrhage",
        "Cerebral Ischemia"
      ],
      "interventions": [
        {
          "name": "Transcranial Doppler",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Hackensack Meridian Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2020-09-22",
      "completion_date": "2022-08-12",
      "has_results": true,
      "last_update_posted_date": "2025-04-15",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Hackensack, New Jersey",
      "locations": [
        {
          "city": "Hackensack",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04583163"
    },
    {
      "nct_id": "NCT05920759",
      "title": "Sex-specific Effect of Restricted Sleep on Brain Health",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cerebrovascular Circulation"
      ],
      "interventions": [
        {
          "name": "Cerebral blood flow",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 16,
      "start_date": "2023-10-01",
      "completion_date": "2025-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-11-26",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05920759"
    },
    {
      "nct_id": "NCT03150524",
      "title": "RCVS: The Rational Approach to Diagnosis and Treatment",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Reversible Cerebral Vasoconstriction Syndrome"
      ],
      "interventions": [
        {
          "name": "TCD- cerebral blood flow velocities",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Headache pain score",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neurological examination",
          "type": "OTHER"
        },
        {
          "name": "Repeat Neuroimaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Nimodipine",
          "type": "DRUG"
        },
        {
          "name": "Verapamil ER",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2017-07-01",
      "completion_date": "2019-05-31",
      "has_results": false,
      "last_update_posted_date": "2019-09-18",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03150524"
    },
    {
      "nct_id": "NCT07613918",
      "title": "Brain Blood Flow and Cerebral Autoregulation Monitoring in Critically Ill Children",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Critical Illness",
        "Pediatric Critical Illness",
        "Respiratory Failure",
        "Traumatic Brain Injury",
        "Cardiac Arrest"
      ],
      "interventions": [
        {
          "name": "Transcranial Doppler",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "1 Day to 17 Years"
      },
      "enrollment_count": 125,
      "start_date": "2026-08-03",
      "completion_date": "2028-05",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07613918"
    },
    {
      "nct_id": "NCT04632485",
      "title": "Early Detection of Vascular Dysfunction Using Biomarkers From Lagrangian Carotid Strain Imaging",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy",
        "Carotid Artery Diseases"
      ],
      "interventions": [
        {
          "name": "Ultrasound imaging",
          "type": "DEVICE"
        },
        {
          "name": "Magnetic Resonance Imaging (MRI)",
          "type": "DEVICE"
        },
        {
          "name": "Neurocognitive testing",
          "type": "OTHER"
        },
        {
          "name": "Transcranial Doppler (TCD)",
          "type": "DEVICE"
        },
        {
          "name": "Pulse Wave Doppler",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 217,
      "start_date": "2021-09-09",
      "completion_date": "2025-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-02",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04632485"
    },
    {
      "nct_id": "NCT04808778",
      "title": "Stroke Prevention in Young Adults With Sickle Cell Anemia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease",
        "Sickle Cell Anemia",
        "Stroke, Ischemic",
        "Silent Stroke",
        "Silent Cerebral Infarct",
        "Stroke"
      ],
      "interventions": [
        {
          "name": "Hydroxyurea therapy per standard care",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "26 Years",
        "sex": "ALL",
        "summary": "16 Years to 26 Years"
      },
      "enrollment_count": 250,
      "start_date": "2021-05-17",
      "completion_date": "2029-06-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-09",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04808778"
    },
    {
      "nct_id": "NCT04604015",
      "title": "RoBotic TCD Ultrasound BubbLe Study Compared to Transthoracic Echocardiography for Detection of Right to Left Shunt",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Embolic Stroke of Undetermined Source",
        "Transient Ischemic Attack",
        "Right-To-Left Atrial Shunt",
        "Patent Foramen Ovale"
      ],
      "interventions": [
        {
          "name": "NeuralBot Investigational System",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Transthoracic Echocardiography (TTE)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "NeuraSignal Inc dba NovaSignal",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 154,
      "start_date": "2020-10-06",
      "completion_date": "2021-11-02",
      "has_results": true,
      "last_update_posted_date": "2024-01-24",
      "last_synced_at": "2026-09-30T18:13:34.028Z",
      "location_count": 7,
      "location_summary": "Phoenix, Arizona • Portland, Oregon • Chattanooga, Tennessee + 3 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Chattanooga",
          "state": "Tennessee"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04604015"
    }
  ]
}