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ClinicalTrials.gov public records Last synced Oct 23, 2026, 1:27 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 290 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Doppler Clear all
Withdrawn Not applicable Interventional

The Effect of Atrial Fibrillation Hemodynamics on Regulation of Cerebral Blood Flow

NCT00745602
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
non-invasive testing
Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 23, 2026, 1:27 PM EDT
Recruiting No phase listed Observational

Longitudinal Study of Intra-Uterine Growth Restriction

NCT02382601
View directory record Official record
Conditions
IUGR, Pregnancy
Interventions
Ultrasound, MRI, Blood collection, Neurological Function Assessment, Placental Analysis, Measurement of body fat, Pediatric heart ultrasound
Radiation · Procedure · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Follow Up on Freestyle Valves in Children

NCT00385112
View directory record Official record
Conditions
Right Ventricle, Pulmonary Valve Stenosis, Pulmonary Valve Atresia
Interventions
Echocardiogram
Procedure
Lead sponsor
Emory University
Other
Eligibility
8 Years to 40 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 26, 2017 · Synced Oct 23, 2026, 1:27 PM EDT
Terminated No phase listed Observational

Cardiomyopathy in Steroid-resistant Nephrotic Syndrome: Impact of Focal Segmental Glomerulosclerosis

NCT00883636
View directory record Official record
Conditions
Focal Segmental Glomerulosclerosis, Nephrotic Syndrome, Steroid Resistant Nephrotic Syndrome, Chronic Kidney Disease
Interventions
Cardiovascular Assessment, Renal Assessment, Genetic Evaluation
Other
Lead sponsor
Northwell Health
Other
Eligibility
6 Months to 21 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jun 19, 2013 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Cardiovascular Complications of Sickle Cell Disease

NCT01044901
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
MRI, Transthoracic Echocardiography, tonometry, EKG
Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2022 · Synced Oct 23, 2026, 1:27 PM EDT
Not yet recruiting No phase listed Observational

UltraTrac Clinical Pilot Study

NCT07864714
View directory record Official record
Conditions
Hemodynamic Monitoring
Interventions
Noninvasive Hemodynamic Monitoring System
Device
Lead sponsor
AcQumen Medical, Inc.
Industry
Eligibility
0 Years to 21 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Blood Flow: Age and Gender

NCT02840851
View directory record Official record
Conditions
Healthy, Aging
Interventions
MRI, TCD
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
20 Years to 64 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 9, 2019 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Not applicable Interventional Results available

Ultrasound-image Guided Versus Doppler Guided Versus Palpation Technique for Arterial Cannulation in Adults

NCT01276171
View directory record Official record
Conditions
Anesthesia
Interventions
Ultrasound, Doppler, Palpation
Procedure
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 99 Years
Enrollment
749 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 26, 2017 · Synced Oct 23, 2026, 1:27 PM EDT
Terminated Phase 1 Interventional

Elastographic Imaging of Renal Transplants

NCT00935727
View directory record Official record
Conditions
Renal Transplant
Interventions
Elastographic imaging
Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 9, 2009 · Synced Oct 23, 2026, 1:27 PM EDT
Recruiting No phase listed Observational

Pulmonary Hypertension in Left Heart Disease

NCT05935605
View directory record Official record
Conditions
Pulmonary Hypertension, Pulmonary Vascular Disease, Left Heart Disease
Interventions
Transthoracic Echocardiography (TTE), Lung ultrasound
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational

NOninVasive Intracranial prEssure From Transcranial doppLer Ultrasound Development of a Comprehensive Database of Multimodality Monitoring Signals for Brain-Injured Patients

NCT04548596
View directory record Official record
Conditions
Traumatic Brain Injury, Subarachnoid Hemorrhage, Intracerebral Hemorrhage, Liver Failure, Ischemic Stroke
Interventions
Transcranial Doppler
Diagnostic Test
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2025
U.S. locations
3
States / cities
Davis, California • San Francisco, California • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Oct 23, 2026, 1:27 PM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Evaluation of the UltraTrac System as a Non-Invasive Monitor of Hemodynamic Parameters

NCT07862608
View directory record Official record
Conditions
Hemodynamic Monitoring
Interventions
Noninvasive Hemodynamic Monitoring System
Device
Lead sponsor
AcQumen Medical, Inc.
Industry
Eligibility
2 Months to 95 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Riverside, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Neural Control of Kidney Blood Flow During Exercise in African American Adults

NCT03981640
View directory record Official record
Conditions
Healthy
Interventions
Acute exercise, Cold pressor test, Mental stress test
Other
Lead sponsor
University of Massachusetts, Boston
Other
Eligibility
18 Years to 35 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

PNS to Improve Vascular Function and Limb Health in Veterans

NCT07696988
View directory record Official record
Conditions
Lower Limb Amputees, Diabetes
Interventions
Chronically Implanted Neural and Muscular Interface, Peripheral Nerve Stimulation (PNS)
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Phase 3 Interventional Results available

SonoVue®-Enhanced Ultrasound (US) Versus Unenhanced US for Focal Liver Lesion Characterization

NCT00829413
View directory record Official record
Conditions
Liver Neoplasms
Interventions
SonoVue®
Drug
Lead sponsor
Bracco Diagnostics, Inc
Industry
Eligibility
18 Years and older
Enrollment
353 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 3, 2018 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Not applicable Interventional Results available

Alternating Pressure Overlay on Weight Bearing Tissue Tolerance in People With Spinal Cord Injury

NCT03317288
View directory record Official record
Conditions
Spinal Cord Injuries, Pressure Ulcer
Interventions
Dabir Air overlay
Device
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

CLOTBUST Hands-Free: A Phase I/II Pilot Safety Trial

NCT01240356
View directory record Official record
Conditions
Stroke
Interventions
2-MHz transcranial Doppler ultrasound, 2-MHz transcranial Doppler ultrasound insonation
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
2
States / cities
Birmingham, Alabama • Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 23, 2016 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

IR and Microvascular Blood Flow in SCI

NCT02034331
View directory record Official record
Conditions
Spinal Cord Injury, Insulin Resistance
Interventions
Insulin iontophoresis, Placebo Iontophoresis, Acetylcholine Iontophoresis, Heat application
Drug · Other
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
20 Years to 69 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Maternal Uterine Artery Doppler Study

NCT01698957
View directory record Official record
Conditions
Maternal-Fetal Exchange
Interventions
Any patient eligible for an Ultrasound greater than or equal to 18 weeks gestation without a fetal or uterine anomaly.
Other
Lead sponsor
Obstetrix Medical Group
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
2
States / cities
Glendale, Arizona • Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 22, 2016 · Synced Oct 23, 2026, 1:27 PM EDT
Completed No phase listed Observational

Study of Left Ventricular Dyssynchrony in Heart Failure Patients

NCT00953953
View directory record Official record
Conditions
Heart Failure
Interventions
Phillips ultrasound system
Device
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 26, 2012 · Synced Oct 23, 2026, 1:27 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Manual and Expressed Placental Removal at Cesarean Delivery and Its Effects on Various Cardiac Indices

NCT00711451
View directory record Official record
Conditions
Pregnancy, Cesarean Delivery
Interventions
Manual removal, Expressed removal
Behavioral · Procedure
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 16, 2012 · Synced Oct 23, 2026, 1:27 PM EDT
Recruiting Not applicable Interventional

Valve Hemodynamic Optimization Based on Doppler-Echocardiography vs Catheterization Measurements Following ViV TAVR

NCT05459233
View directory record Official record
Conditions
Aortic Valve Stenosis, Aortic Valve Regurgitation, Prosthesis Failure
Interventions
Doppler-echocardiography, Invasive hemodynamic measurements
Procedure
Lead sponsor
Institut universitaire de cardiologie et de pneumologie de Québec, University Laval
Other
Eligibility
18 Years and older
Enrollment
310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
6
States / cities
San Francisco, California • Hollywood, Florida • Royal Oak, Michigan + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Oct 23, 2026, 1:27 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Blood Brain Flow and Exercise

NCT02653638
View directory record Official record
Conditions
Cerebrovascular Circulation
Interventions
Control, Indomethacin
Other · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 18, 2019 · Synced Oct 23, 2026, 1:27 PM EDT
Enrolling by invitation Not applicable Interventional

Pilot Study to Evaluate the Role of EBUS in the Diagnosis of Acute PE in Critically Ill Patients

NCT04047784
View directory record Official record
Conditions
Acute Pulmonary Embolism
Interventions
Endobronchial ultrasound (EBUS)
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
2
States / cities
Los Angeles, California • Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 23, 2026, 1:27 PM EDT