{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=TCD+Ultrasound",
    "query": {
      "intervention": "TCD Ultrasound"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 34,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=TCD+Ultrasound&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T14:15:42.827Z",
  "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": "NCT01240356",
      "title": "CLOTBUST Hands-Free: A Phase I/II Pilot Safety Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Stroke"
      ],
      "interventions": [
        {
          "name": "2-MHz transcranial Doppler ultrasound",
          "type": "DEVICE"
        },
        {
          "name": "2-MHz transcranial Doppler ultrasound insonation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2008-12",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2016-05-23",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama • Houston, Texas",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01240356"
    },
    {
      "nct_id": "NCT02354300",
      "title": "Transcranial Doppler Ultrasound Monitoring During Flow-Diverter Embolization",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Intracranial Aneurysm",
        "Aneurysm, Intracranial",
        "Giant Intracranial Aneurysm"
      ],
      "interventions": [
        {
          "name": "TCD Ultrasound",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2015-04",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2016-08-26",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02354300"
    },
    {
      "nct_id": "NCT02084394",
      "title": "Cerebral Blood Flow During CPB During Cardiac Surgery and the Presence of Post op Delirium",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Delirium"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 110,
      "start_date": "2013-06",
      "completion_date": "2016-02",
      "has_results": false,
      "last_update_posted_date": "2016-02-09",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02084394"
    },
    {
      "nct_id": "NCT05155956",
      "title": "Cerebral Hemodynamics and Microemboli During Placement of Relay®Branch Thoracic Stent-Graft System",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Thoracic Aortic Aneurysm",
        "Thoracic Aortic Dissection",
        "Microemboli"
      ],
      "interventions": [
        {
          "name": "transcranial Doppler ultrasonography (TCD)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2021-12-15",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05155956"
    },
    {
      "nct_id": "NCT07013396",
      "title": "Transcranial Doppler Evaluation After Endovascular Thrombectomy for Acute Ischemic Stroke (PRECISE-TCD)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anterior Cerebral Artery Syndrome",
        "Anterior Cerebral Artery Stroke",
        "Acute Ischemic Stroke",
        "Cardioembolic Stroke",
        "Vasogenic Cerebral Edema"
      ],
      "interventions": [
        {
          "name": "Transcranial Doppler (TCD) examination",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2026-08",
      "completion_date": "2029-08",
      "has_results": false,
      "last_update_posted_date": "2026-07-16",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07013396"
    },
    {
      "nct_id": "NCT03066115",
      "title": "Impact of NOS, COX, and ROS Inhibition on Cerebral Blood Flow Regulation",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypoxia",
        "Hypercapnia"
      ],
      "interventions": [
        {
          "name": "L-NMMA",
          "type": "DRUG"
        },
        {
          "name": "Ketorolac",
          "type": "DRUG"
        },
        {
          "name": "Ascorbic Acid",
          "type": "DRUG"
        },
        {
          "name": "Intravenous Catheter",
          "type": "PROCEDURE"
        },
        {
          "name": "Transcranial Doppler Ultrasound",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "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": 0,
      "start_date": "2020-12-01",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2019-01-10",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03066115"
    },
    {
      "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": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04154865"
    },
    {
      "nct_id": "NCT03075007",
      "title": "Brain Vascular Disease in Aging and Dementia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alzheimer Disease",
        "White Matter Hyperintensities",
        "Dementia",
        "Aging"
      ],
      "interventions": [
        {
          "name": "Florbetaben F18",
          "type": "RADIATION"
        },
        {
          "name": "Transcranial Doppler",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2017-05-23",
      "completion_date": "2019-08-31",
      "has_results": false,
      "last_update_posted_date": "2019-09-12",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03075007"
    },
    {
      "nct_id": "NCT04548596",
      "title": "NOninVasive Intracranial prEssure From Transcranial doppLer Ultrasound Development of a Comprehensive Database of Multimodality Monitoring Signals for Brain-Injured Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury",
        "Subarachnoid Hemorrhage",
        "Intracerebral Hemorrhage",
        "Liver Failure",
        "Ischemic Stroke"
      ],
      "interventions": [
        {
          "name": "Transcranial Doppler",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 162,
      "start_date": "2014-09-10",
      "completion_date": "2025-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-09-18",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 3,
      "location_summary": "Davis, California • San Francisco, California • Atlanta, Georgia",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04548596"
    },
    {
      "nct_id": "NCT03564262",
      "title": "Effects of Acute Dietary Sodium on Cerebrovascular Reactivity and Blood Pressure Reactivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Blood Pressure",
        "Cerebrovascular Reactivity"
      ],
      "interventions": [
        {
          "name": "Low Sodium Meal (138 mg sodium)",
          "type": "OTHER"
        },
        {
          "name": "High Sodium Meal (1,495 mg sodium)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Delaware",
      "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": 37,
      "start_date": "2018-05-01",
      "completion_date": "2020-06-01",
      "has_results": false,
      "last_update_posted_date": "2020-09-22",
      "last_synced_at": "2026-09-11T14:15:42.827Z",
      "location_count": 1,
      "location_summary": "Newark, Delaware",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03564262"
    }
  ]
}