{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doppler",
    "query": {
      "intervention": "Doppler"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 283,
    "total_pages": 29,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doppler&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T20:34:53.878Z",
  "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": "NCT00776035",
      "title": "Sex and Obesity: Effects on Heart Failure Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obesity",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "PET (Positron Emission Tomography)",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiogram",
          "type": "PROCEDURE"
        },
        {
          "name": "^15O-water",
          "type": "RADIATION"
        },
        {
          "name": "1-^11C-palmitate",
          "type": "RADIATION"
        },
        {
          "name": "1-^11C-glucose",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "20 Years to 65 Years"
      },
      "enrollment_count": 19,
      "start_date": "2000-02-01",
      "completion_date": "2011-04-02",
      "has_results": true,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00776035"
    },
    {
      "nct_id": "NCT03031457",
      "title": "Microsurgical Breast Reconstruction & VTE",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Reconstruction",
        "Venous Thromboembolism"
      ],
      "interventions": [
        {
          "name": "Duplex ultrasound",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 90 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2017-01-30",
      "completion_date": "2017-12-15",
      "has_results": false,
      "last_update_posted_date": "2018-05-01",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03031457"
    },
    {
      "nct_id": "NCT01504880",
      "title": "Atrioventricular Valve Regurgitation Vena Contracta; Echo Versus MRI",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tricuspid Valve Regurgitation, Non-rheumatic",
        "Mitral Valve Regurgitation"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 3,
      "start_date": "2010-06",
      "completion_date": "2019-12-19",
      "has_results": false,
      "last_update_posted_date": "2020-02-06",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01504880"
    },
    {
      "nct_id": "NCT04743362",
      "title": "A Study of Noninvasive Methods to Evaluate Skin and Mucosal Conditions",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Skin Lesion",
        "Mucosal Lesion"
      ],
      "interventions": [
        {
          "name": "Dermoscopic imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "3-dimensional total body photography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Confocal microscopy",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Optical Coherence Tomography imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrasound",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hyperspectral imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Electrical impedance spectroscopy",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Patient self-imaging",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 5010,
      "start_date": "2021-02-02",
      "completion_date": "2031-08-02",
      "has_results": false,
      "last_update_posted_date": "2026-04-23",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04743362"
    },
    {
      "nct_id": "NCT00225381",
      "title": "Gas Kinetics and Metabolism in Anesthesia During Non Steady State",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anesthetized Healthy Patients (ASA 1 or 2) in the Supine Position, Excluding Head, Neck and Head Surgeries",
        "Anesthetized Patient With Severe Systemic Disease (ASA 3 or 4)"
      ],
      "interventions": [
        {
          "name": "connection of measuring device to anesthesia circuit",
          "type": "DEVICE"
        },
        {
          "name": "drawing of blood sample through an arterial line, placed according to clinical criteria by primary anesthesia team",
          "type": "PROCEDURE"
        },
        {
          "name": "changing operating room bed position (head down and up position)",
          "type": "PROCEDURE"
        },
        {
          "name": "adding PEEP during anesthesia",
          "type": "PROCEDURE"
        },
        {
          "name": "placement of esophageal Doppler for cardiac output measurements",
          "type": "PROCEDURE"
        },
        {
          "name": "Humidity sensor",
          "type": "DEVICE"
        },
        {
          "name": "A mixing chamber (bymixer)",
          "type": "DEVICE"
        },
        {
          "name": "Pneumotachometer cuvette",
          "type": "DEVICE"
        },
        {
          "name": "Mass spectrometer sampling port",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2005-08",
      "completion_date": "2012-01-13",
      "has_results": false,
      "last_update_posted_date": "2021-03-23",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00225381"
    },
    {
      "nct_id": "NCT07729228",
      "title": "Pulse Detection in Cardiac Arrest Patients Using a Doppler Ultrasound Patch on the Carotid Artery",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Arrest (CA)",
        "Return of Spontaneous Circulation",
        "CPR Quality Assessment"
      ],
      "interventions": [
        {
          "name": "Ultrasound doppler perfusion monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Heartstream US LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 20,
      "start_date": "2026-08-15",
      "completion_date": "2027-08-15",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Manhasset, New York",
      "locations": [
        {
          "city": "Manhasset",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07729228"
    },
    {
      "nct_id": "NCT06861309",
      "title": "Placental Imaging Techniques",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fetal Growth Restriction (FGR)",
        "Placental Insufficiency",
        "Preeclampsia",
        "Still Births",
        "Pregnancy",
        "Pregnancy Complications",
        "Pregnancy Outcomes",
        "Ultrasound"
      ],
      "interventions": [
        {
          "name": "ultrafast power Doppler imaging (uPDI) / quantitative ultrasound (QUS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Carilion Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2025-04-23",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06861309"
    },
    {
      "nct_id": "NCT04692818",
      "title": "3D Ultrasound Breast Imaging",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Tumor"
      ],
      "interventions": [
        {
          "name": "GE Logiq E10 clinical ultrasound scanner",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Verasonics research scanner",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 125,
      "start_date": "2021-11-10",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04692818"
    },
    {
      "nct_id": "NCT03317288",
      "title": "Alternating Pressure Overlay on Weight Bearing Tissue Tolerance in People With Spinal Cord Injury",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Spinal Cord Injuries",
        "Pressure Ulcer"
      ],
      "interventions": [
        {
          "name": "Dabir Air overlay",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Illinois at Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 15,
      "start_date": "2017-05-12",
      "completion_date": "2019-03-31",
      "has_results": true,
      "last_update_posted_date": "2021-06-09",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03317288"
    },
    {
      "nct_id": "NCT03889678",
      "title": "Color Doppler and Peripheral Venous Catheters",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Extravasation",
        "Vein Injury"
      ],
      "interventions": [
        {
          "name": "Color flow doppler",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Augusta 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": "2019-03-30",
      "completion_date": "2019-05-31",
      "has_results": false,
      "last_update_posted_date": "2019-06-19",
      "last_synced_at": "2026-09-08T20:34:53.878Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03889678"
    }
  ]
}