Clinical trials: Cerebral Blood Flow
Amnesia, Dementia
Magnetic Resonance Imaging for the Study of Patients With Neurological Disorders
This study is divided into two parts. The first part of the study will use MRI technology to view the brain structure of patients with neurological disorders and normal volunteers.
- Conditions
- Amnesia, Dementia, Healthy, Nervous System Disease
- Trial name
- NCT00001362
- Where
- United States
- Volunteers
- 830 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Concussion
Vascular Assessment of Regulation Index Arrays Registry
The objective of this patient registry is to collect and analyze physiological data associated with baseline and brain injury identified in standard clinical practice (Normal Values, Recovery Curves, Correlation between Symptoms…
- Trial name
- VARIA (NCT02435082)
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- NeuroChaos Solutions, Inc.
Fabry Disease, Healthy
PET Scans in Normal Volunteers and Patients With Fabry Disease
This study will determine the rate of sugar metabolism in the brain of patients with Fabry disease, a genetic disease of abnormal lipid metabolism.
- Trial name
- NCT00005111
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Anesthesia, General, Infant
Impact of CO2 on Cerebral Blood Flow in Infants Less Than 6 Months During General Anaesthesia
The study aims at assessing cerebral blood flow variations following expired CO2 variations in anaesthetized infants less than 6 months, during a routine general anesthesia.
- Trial name
- NCT03567031
- Testing
- EtCO2 modification
- Where
- Canada
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- St. Justine's Hospital
Persistent Pulmonary Hypertension of Newborn
N-Terminal Pro-brain Natriuretic Peptide Hormone and Persistent Pulmonary Hypertension
Babies who are suspected of having persistent pulmonary hypertension (PPHN) will be included in this study. PPHN is a condition in which the blood is restricted from flowing to the lungs in a normal way making it hard for babies…
- Trial name
- NCT00443859
- Where
- 2 sites in United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Christiana Care Health Services
Cerebrovascular Regulation
Brain Blood Flow Responses at Rest and During Exercise
Tight regulation of brain blood flow is integral for delivery of oxygen and energy for survival. During childhood, the brain has a twofold higher metabolic requirement, thus requires greater blood flow to match this.
- Trial name
- NCT06142045
- Testing
- RespirACT RA-MR System
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Healthy Adolescents
Activity Breaks for Brain Health in Adolescents
The main aim for this study is to investigate to what extent physical activity of moderate or low intensity, relative to prolonged inactivity, may acutely alter neural activity-related prefrontal cortex oxygenated hemoglobin…
- Trial name
- ABBaH teens (NCT04552626)
- Testing
- Prolonged sitting (social breaks), Prolonged sitting with step-up exercise break, Prolonged sitting with simple resistance activity breaks
- Where
- Sweden
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- The Swedish School of Sport and Health Sciences
Autism
MRI Study of Cerebral Blood Flow in Development Disorders in Children
The purpose of this study is reproduce the individual detection results by PET with Arterial Spin Labeling (ASL) MRI, to establish a biomarker useful in autism diagnosis.
- Trial name
- IRM-Aut (NCT02165410)
- Testing
- ASL-MRI, Diffusion tensor imaging (diffusion MRI), Resting state MRI
- Where
- France
- Volunteers
- 115 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Normal Human Subjects
Single Photon Emission Computed Tomography of the Normal Human Brain
The objective of the study is to acquire a database of Single Photon Emission Computed Tomographic (SPECT) studies of the brains of normal human subjects in resting and concentrating states.
- Trial name
- NCT01203891
- Where
- United States
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- Amen Clinics, Inc.
Cerebral Blood Flow, Cerebral Blood Flow Regulation
The Role of Estrogen and Testosterone in Determining Brain Blood Flow and Metabolic Regulation in Humans
Due to historical exclusion of females from research, there are gaps in the understanding of female physiology, how it differs from males, and how sex-specific hormones contribute.
- Conditions
- Cerebral Blood Flow, Cerebral Blood Flow Regulation, Sex Differences, Exercise
- Trial name
- NCT07212712
- Testing
- GnRH antagonist, Estradiol (E2), Testosterone
- Where
- Canada
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Williams Syndrome, Supravalvular Aortic Stenosis
Impact of Elastin Mediated Vascular Stiffness on End Organs
Background: People with Williams Syndrome (WS) and supravalvular aortic stenosis (SVAS) have less elasticity in their blood vessels. This is called blood vessel stiffness.
- Conditions
- Williams Syndrome, Supravalvular Aortic Stenosis, Cardiovascular Disease
- Trial name
- NCT02840448
- Where
- 2 sites in United States
- Volunteers
- 159 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Premature Birth
Cerebral Blood Flow Parameters and Neurobehavioral Development in Infants at Term Age
Although several studies have contrasted the hemodynamics of cerebral arteries using cranial Doppler ultrasound between full-term and preterm infants, the assessments were mostly conducted in the first days of life.
- Trial name
- NCT00676247
- Where
- Taiwan
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Preterm Children
Neonatal Cerebral Blood Flow and the Neurobehavioral and Handedness Outcomes in Term and Preterm Adolescents
The results will provide insightful information to understand the process of neural development and the predictive value of early cerebral blood flow measures on longitudinal neurodevelopment and handedness outcomes in preterm…
- Trial name
- NCT04708652
- Testing
- No intervention
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Cerebrovascular Disorder, Healthy
Magnetic Resonance Imaging Studies of Motor and Thought Processes
Magnetic resonance imaging (MRI) is a diagnostic tool that creates high quality images of the human body without the use of X-ray (radiation).
- Conditions
- Cerebrovascular Disorder, Healthy, Movement Disorder, Nervous System Disease
- Trial name
- NCT00001361
- Where
- United States
- Volunteers
- 610 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Hypotension (MeSH: D007022)
Carotid Artery Blood Flow, Blood Pressure, and Cardiac Output During Anesthesia in Children Aged 0-5 Years
Blood pressure is routinely monitored during anesthesia in children, but blood pressure alone may not accurately reflect blood flow to vital organs.
- Trial name
- CARFLOW (NCT07847203)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Altitude Training Adaptation, Cognitive Function
Effects of Bicarbonate Spring Water Immersion on Cognitive Reliability and Post-Maximal Exercise Recovery in Adolescent Rowers During Altitude Training: A Sex-Stratified Three-Arm Randomized Controlled Trial
This randomized controlled trial aims to investigate the effects of hot spring bath therapy on cognitive function recovery, cerebral hemodynamics, and athletic performance in athletes undergoing altitude training.
- Conditions
- Altitude Training Adaptation, Cognitive Function, Cerebral Hemodynamics, Exercise Performance
- Trial name
- NCT07608913
- Testing
- Control Group：Natural Recovery, Hot water immersion group, hot spring immersion group
- Where
- China
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Macao Polytechnic University
Brain Injuries, Cerebrovascular Disorders
Measuring Blood Flow Characteristics Using Dynamic Contrast Enhanced Magnetic Resonance Imaging
Dynamic contrast-enhanced (DCE) MRI gives quantitative and semi-quantitative information about the integrity of the vascular system and can be used to quantify blood-brain barrier (BBB) integrity.
- Trial name
- NCT02702635
- Testing
- DCE MRI of the brain
- Where
- United States
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Loma Linda University
Multiple Sclerosis
The Effect of Sildenafil Citrate (Viagra® (Registered Trademark)) on Brain Blood Flow in Multiple Sclerosis Patients
This study will determine whether sildenafil citrate, commonly known as Viagra, can cause increased blood flow to the brain in a wide range of multiple sclerosis (MS) patients, including women.
- Trial name
- NCT00094068
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- National Institutes of Health Clinical Center (CC)
Preterm, Patent Ductus Arteriosus
NeoDoppler: New Ultrasound Technology for Continuous Monitoring of Cerebral Circulation Pilot
Non-invasive tools for monitoring of course of disease are important and necessary in the treatment of pre-term/premature infants and sick neonates.
- Conditions
- Preterm, Patent Ductus Arteriosus, Sepsis, Asphyxia
- Trial name
- CE-NeoDoppler (NCT06646250)
- Testing
- NeoDoppler - CE certified
- Where
- Norway
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- St. Olavs Hospital
Polycystic Ovary Syndrome, Exercise
The Effects of High-intensity and Moderate-intensity Exercise on Polycystic Ovary Syndrome
This study will investigate the impact of high- and moderate-intensity exercise on the cardiometabolic and brain health of women with Polycystic Ovary syndrome (PCOS).
- Conditions
- Polycystic Ovary Syndrome, Exercise, Cerebrovascular Circulation
- Trial name
- NCT05394935
- Testing
- High-Intensity Exercise, Moderate-Intensity Exercise
- Where
- United Kingdom
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- Cardiff Metropolitan University