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ClinicalTrials.gov public records Last synced Oct 10, 2026, 11:09 AM EDT

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Showing 25–48 of 50 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: transcranial Doppler ultrasonography (TCD) Clear all
Completed Not applicable Interventional

DCS Study in Extremely Premature Newborns

NCT04367181
View directory record Official record
Conditions
Premature Birth, Extremely Low Birth Weight, Infant, Small for Gestational Age, Intracerebral Hemorrhage
Interventions
Diffuse Correlation Spectroscopy (DCS), Amplitude Integrated Electroencephalography (aEEG)
Device
Lead sponsor
Maria Angela Franceschini
Other
Eligibility
0 Hours to 72 Hours
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 10, 2026, 11:09 AM EDT
Completed No phase listed Observational Results available

Long-Term Effects of Hydroxyurea in Children With Sickle Cell Anemia (The BABY HUG Follow-up Study)

NCT00890396
View directory record Official record
Conditions
Anemia, Sickle Cell
Interventions
Hydroxyurea
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
2 Years to 7 Years
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
14
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Miami, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2020 · Synced Oct 10, 2026, 11:09 AM EDT
Completed No phase listed Observational

Biomarker Development in Sturge-Weber Syndrome

NCT01345305
View directory record Official record
Conditions
Sturge-Weber Syndrome
Interventions
Not listed
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
6 Months to 21 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 16, 2020 · Synced Oct 10, 2026, 11:09 AM EDT
Completed Phase 1 Interventional

Haploidentical Stem Cell Transplant for Patients With Sickle Cell Disease and Prior Stroke or Abnormal Transcranial Ultrasound

NCT00152113
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Hematopoietic Stem Cell Transplantation, CliniMACS, See intervention description
Procedure · Device · Drug
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 16 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 26, 2017 · Synced Oct 10, 2026, 11:09 AM EDT
Recruiting No phase listed Observational

Pulmonary Embolism and Right-to-Left Shunts

NCT07519876
View directory record Official record
Conditions
Pulmonary Embolism (PE), Right-to-Left Shunt, Stroke, Atrial Septal Defects, Patent Foramen Ovale (PFO), Pulmonary Arteriovenous Malformation
Interventions
Not listed
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Exercise in Adolescents With Insulin Resistance

NCT04154865
View directory record Official record
Conditions
Insulin Resistance
Interventions
Hypercapnia, Transcranial Doppler, Cycle ergometer, Cognitive Tests
Other · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
12 Years to 18 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 3, 2024 · Synced Oct 10, 2026, 11:09 AM EDT
Terminated Phase 3 Interventional Results available

Sparing Conversion to Abnormal TCD (Transcranial Doppler) Elevation (SCATE)

NCT01531387
View directory record Official record
Conditions
Sickle Cell Anemia
Interventions
Hydroxyurea
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years to 10 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 8, 2016 · Synced Oct 10, 2026, 11:09 AM EDT
Completed No phase listed Observational

Transcranial Doppler Ultrasound Monitoring During Flow-Diverter Embolization

NCT02354300
View directory record Official record
Conditions
Intracranial Aneurysm, Aneurysm, Intracranial, Giant Intracranial Aneurysm
Interventions
TCD Ultrasound
Device
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 26, 2016 · Synced Oct 10, 2026, 11:09 AM EDT
Recruiting No phase listed Observational

Brain Blood Flow and Cerebral Autoregulation Monitoring in Critically Ill Children

NCT07613918
View directory record Official record
Conditions
Critical Illness, Pediatric Critical Illness, Respiratory Failure, Traumatic Brain Injury, Cardiac Arrest
Interventions
Transcranial Doppler
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
1 Day to 17 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vascular Assessment of Regulation Index Arrays Registry

NCT02435082
View directory record Official record
Conditions
Concussion
Interventions
Not listed
Lead sponsor
NeuroChaos Solutions, Inc.
Industry
Eligibility
13 Years and older
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Oct 10, 2026, 11:09 AM EDT
Terminated Not applicable Interventional

Effects of Cerebral Protection With Filters vs. Flow Reversal on Cerebral Embolization After Carotid Artery Stenting

NCT01414387
View directory record Official record
Conditions
Carotid Artery Disease, Stroke
Interventions
Carotid filter, Carotid reversal of flow
Procedure
Lead sponsor
Dallas VA Medical Center
Federal
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Oct 10, 2026, 11:09 AM EDT
Active, not recruiting Phase 2 Interventional

Stroke Prevention With Hydroxyurea Enabled Through Research and Education (SPHERE)

NCT03948867
View directory record Official record
Conditions
Sickle Cell Anemia in Children
Interventions
Hydroxyurea, Elevated Arm TCD Examination, Normal Arm TCD Examination
Drug · Diagnostic Test
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years to 16 Years
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Terminated Not applicable Interventional

Embolic Events Detected During Total Knee Arthroplasty With the Use of RIA (Reamer-Irrigator-Aspirator)

NCT00815958
View directory record Official record
Conditions
Total Knee Replacement
Interventions
Reaming with Synthes RIA (Reamer-Irrigator-Aspirator), Reaming with conventional reamer
Procedure
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 24, 2017 · Synced Oct 10, 2026, 11:09 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Impact of NOS, COX, and ROS Inhibition on Cerebral Blood Flow Regulation

NCT03066115
View directory record Official record
Conditions
Hypoxia, Hypercapnia
Interventions
L-NMMA, Ketorolac, Ascorbic Acid, Intravenous Catheter, Transcranial Doppler Ultrasound
Drug · Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 10, 2019 · Synced Oct 10, 2026, 11:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Translational Research Examining Acupuncture Treatment in Traumatic Brain Injury

NCT02623218
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Acupuncture, Sham Acupuncture
Device
Lead sponsor
AOMA Graduate School of Integrative Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Oct 10, 2026, 11:09 AM EDT
Recruiting Not applicable Interventional

Respiratory Muscle Training to Improve Cerebrovascular and Immune Function

NCT07406295
View directory record Official record
Conditions
Obesity, Cerebrovascular Function, Immune Cells Activity
Interventions
High intensity inspiratory muscle strength training, Low intensity
Device
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Transcranial Doppler(TCD) Evaluation of High Intensity Transient Signals and Carotid Disease

NCT05829200
View directory record Official record
Conditions
Asymptomatic Carotid Stenosis, Symptomatic Carotid Stenosis, TCD, HITS
Interventions
Transcranial Doppler (TCD)
Device
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced Oct 10, 2026, 11:09 AM EDT
Terminated No phase listed Observational Results available

Variability in Transcranial Doppler Technique in Neuro-Critical Care Patients

NCT04583163
View directory record Official record
Conditions
Cerebral Aneurysm, Stroke, Vasospasm, Cerebral, Subarachnoid Hemorrhage, Aneurysmal, Aneurysmal Subarachnoid Hemorrhage, Cerebral Ischemia
Interventions
Transcranial Doppler
Diagnostic Test
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older
Enrollment
3 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Oct 10, 2026, 11:09 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Cardiovascular and Neurovascular Regulation in GWI

NCT04586049
View directory record Official record
Conditions
Brain Blood Flow, Neurovascular Control
Interventions
MRI, Transcranial Doppler Ultrasound, Sympathetic Nerve Activity
Device · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
45 Years to 68 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Not yet recruiting No phase listed Observational

Continuous Assessment of Brain Blood Perfusion in Subarachnoid Hemorrhage Patients Using Near-Infrared Spectroscopy (NIRS)

NCT06932640
View directory record Official record
Conditions
Subarachnoid Hemorrhage, Aneurysmal
Interventions
- Non-Invasive Near-infrared Spectroscopy (NIRS) device (HEM1 with Foresight Elite Sensor)
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 89 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Not yet recruiting No phase listed Observational

Feasibility of Using NeuraSignal Transcranial Doppler Robot

NCT06565442
View directory record Official record
Conditions
Cerebral Autoregulation
Interventions
NeuraSignal transcranial doppler robot
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 89 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Recruiting No phase listed Observational

Automated Robotic TCD in Traumatic Brain Injury

NCT05848297
View directory record Official record
Conditions
Brain Injuries, Traumatic
Interventions
Transcranial Doppler ultrasonography (TCD)
Device
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Timeline
2025 – 2027
U.S. locations
3
States / cities
Davis, California • Winston-Salem, North Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 10, 2026, 11:09 AM EDT
Completed Phase 2 Interventional

Hydroxyurea to Prevent Stroke in Children With Sickle Cell Anemia and Elevated TCD Flow Velocity

NCT00402480
View directory record Official record
Conditions
Stroke
Interventions
Hydroxyurea
Drug
Lead sponsor
Duke University
Other
Eligibility
3 Years to 18 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 19, 2013 · Synced Oct 10, 2026, 11:09 AM EDT
Enrolling by invitation Not applicable Interventional

Cervical Sympathetic Block in Patients With Cerebral Vasospasm

NCT05230134
View directory record Official record
Conditions
Anesthesia, Local, Cerebral Vasospasm, Subarachnoid Hemorrhage, Aneurysmal
Interventions
Cervical sympathetic block
Procedure
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 10, 2026, 11:09 AM EDT