Clinical trials: Transcranial Doppler Ultrasound
Sickle Cell Anemia
Transcranial Doppler (TCD) With Transfusions Changing to Hydroxyurea
The primary goal of the Phase III TWiTCH trial is to compare 24 months of alternative therapy (hydroxyurea) to standard therapy (transfusions) for pediatric subjects with sickle cell anemia and abnormally high (≥200 cm/sec)…
- Trial name
- TWiTCH (NCT01425307)
- Testing
- Hydroxyurea
- Volunteers
- 159 people
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Stroke
CLOTBUST Hands-Free: A Phase I/II Pilot Safety Trial
The purpose of CLOTBUST-HF is to determine the safety of a novel, external Hands-Free transcranial Doppler (TCD) ultrasound system in healthy volunteers and ischemic stroke patients.
- Trial name
- CLOTBUST-HF (NCT01240356)
- Testing
- 2-MHz transcranial Doppler ultrasound, 2-MHz transcranial Doppler ultrasound insonation
- Where
- 2 sites in United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- The University of Texas Health Science Center, Houston
Mild Cognitive Impairment, Alzheimer Disease
Cerebral Haemodynamic Changes During Cognitive Testing: A fTCD Study
850,000 people live with dementia in the UK, with that number expected to rise to more than 1 million within the next 5 years. The most common type of dementia (55%) is Alzheimer's dementia, and vascular dementia is the second…
- Conditions
- Mild Cognitive Impairment, Alzheimer Disease, Vascular Dementia, Healthy Controls
- Trial name
- NCT03134963
- Testing
- Transcranial doppler ultrasonography, Blood pressure monitoring, Heart rate monitoring
- Where
- 2 sites in United Kingdom
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- University of Leicester
Sickle Cell Disease
Study to Evaluate the Effect of GBT440 on TCD in Pediatrics With Sickle Cell Disease
This study is a Phase 3, randomized, double-blind, placebo-controlled study of voxelotor in pediatric participants, aged ≥ 2 to < 15 years old, with Sickle Cell Disease.
- Trial name
- HOPE Kids 2 (NCT04218084)
- Testing
- Voxelotor
- Where
- 35 sites in United States, Egypt and 7 more
- Volunteers
- 236 people
- Sponsor
- Pfizer
Sickle Cell Disease
Aspirin Prophylaxis in Sickle Cell Disease
Neurologic complications secondary to cerebrovascular damage are prevalent in children with sickle cell disease. These patients experience both clinically overt cerebrovascular accidents and "silent infarctions" demonstrated by…
- Trial name
- START (NCT00178464)
- Testing
- aspirin
- Volunteers
- 11 people
- Sponsor
- University of Rochester
Coronary Artery Bypass Graft Redo, Heart Valve Diseases
SONOlysis in Risk REduction of Symptomatic and Silent Brain infarCtions dUring Cardiac surgEry
The aim of the project is to demonstrate a fibrinolytic effect of sonothrombolysis (continual transcranial Doppler monitoring) using 2 MHz diagnostic probe on the reduction of risk of brain infarctions due to the activation of…
- Trial name
- SONORESCUE (NCT01591018)
- Testing
- sonolysis, cardiac surgery
- Where
- Czechia
- Volunteers
- 120 people
- Sponsor
- University Hospital Ostrava
Cerebral Infarction
Effect of Cilostazol in the Acute Lacunar Infarction Based on Pulsatility Index of Transcranial Doppler
RATIONALE: Elevation in pulsatility indices (PIs), measured by transcranial Doppler (TCD), has been postulated to reflect downstream increased vascular resistance caused by small-vessel disease (SVD).
- Trial name
- ECLIPse (NCT00741286)
- Testing
- Aspirin, cilostazol
- Where
- 8 sites in South Korea
- Volunteers
- 203 people
- Sponsor
- Inje University
Aortic Valve Disease
Transcranial Doppler (TCD) Assessment During Early Anti-thrombotic Therapy After Bioprosthetic Aortic Valve Replacement
The purpose of this study is to determine if there is any difference in the counts of cerebral emboli and platelet function between two prophylactic treatments of thrombosis currently used at University of Ottawa Heart Institute…
- Trial name
- Tissue-Valve (NCT00465218)
- Testing
- Prophylaxis of Thrombosis after aortic valve replacement
- Where
- Canada
- Volunteers
- 70 people
- Sponsor
- Ottawa Heart Institute Research Corporation
Traumatic Brain Injury
Translational Research Examining Acupuncture Treatment in Traumatic Brain Injury
The purpose of this study is to examine the effects of acupuncture on cerebral blood flow (CBF) and blood biomarkers during the acute 10-day window following traumatic brain injury, to determine if those changes correlate with…
- Trial name
- TREAT-TBI (NCT02623218)
- Testing
- Acupuncture
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- AOMA Graduate School of Integrative Medicine
Diabetes
UTLight-transcranial Doppler Assessment of Regional Cerebral Autoregulation
Cerebral autoregulation (CA) is a complex mechanism that serves the essential and vital purpose of controlling cerebral blood flow and metabolism. A stable and optimal brain blood flow is imperative for normal brain function.
- Trial name
- UTLight (NCT02178787)
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Beth Israel Deaconess Medical Center
Sickle Cell Anemia
Sparing Conversion to Abnormal TCD (Transcranial Doppler) Elevation (SCATE)
The primary goal of the Phase III SCATE trial is to compare 30 months of alternative therapy (hydroxyurea) to standard care (observation) in children with sickle cell anemia and conditional (170 - 199cm/sec) Transcranial Doppler…
- Trial name
- SCATE (NCT01531387)
- Testing
- Hydroxyurea
- Where
- 3 sites in United States, Brazil and 1 more
- Volunteers
- 38 people
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Brain Neoplasms, Surgery
Cerebral Blood Perfusion Changes After General Anesthesia for Craniotomy
Few studies look into cerebral blood flow (CBF) changes during emergence from general anesthesia for craniotomy. The purpose of this study is to demonstrate CBF changes during emergence from general anesthesia for craniotomy…
- Conditions
- Brain Neoplasms, Surgery, Hyperemia
- Trial name
- NCT01642147
- Testing
- Transcranial Doppler (TCD), jugular venous bulb catheterization, Tumor removal surgery under general anesthesia
- Where
- China
- Volunteers
- 60 people
- Sponsor
- Huashan Hospital
Cerebral Aneurysm, Stroke
Variability in Transcranial Doppler Technique in Neuro-Critical Care Patients
This study aims to determine the inter- and intra-variability of Transcranial Doppler (TCD) ultrasound in neuro-critical care patients who are planned for consecutive daily TCD evaluations.
- Conditions
- Cerebral Aneurysm, Stroke, Vasospasm, Cerebral, Subarachnoid Hemorrhage, Aneurysmal
- Trial name
- NCT04583163
- Testing
- Transcranial Doppler
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- Hackensack Meridian Health
Stroke
Safety Study of External Counterpulsation as a Treatment for Acute Ischemic Stroke
The purpose of this study is to determine if external counterpulsation (ECP) is feasible to perform, tolerable, and safe as a treatment for patients with acute ischemic stroke (i.e., a blockage of one of the arteries supplying a…
- Trial name
- CUFFS (NCT00983749)
- Testing
- Full-pressure ECP
- Where
- 3 sites in United States
- Volunteers
- 23 people
- Sponsor
- University of California, San Diego
Internal Carotid Artery Stenosis
SONOlysis in Prevention of Brain Infarctions dUring Carotid Stenting and caroTid EndaRterectomy
The aim of the project is to demonstrate a fibrinolytic effect of sonothrombolysis (continual transcranial Doppler monitoring) using 2 MegaHertz (MHz) diagnostic probe on the reduction of risk of brain infarctions due to the…
- Trial name
- SONOBUSTER (NCT01591005)
- Testing
- sonolysis, endarterectomy, carotid stenting
- Where
- Czechia
- Volunteers
- 242 people
- Sponsor
- University Hospital Ostrava
Sickle Cell Disease
Measurement of Cerebral Blood Flow Using Transcranial Doppler Ultrasound in Children With Sickle Cell Disease
Sickle cell disease (SCD) affects haemoglobin - the molecule in blood cells which carries oxygen. It causes red blood cells to become abnormal crescent (or sickle)- shaped.
- Trial name
- NCT02090881
- Testing
- Ultrasound scan
- Where
- United Kingdom
- Volunteers
- 25 people
- Sponsor
- Imperial College Healthcare NHS Trust