Clinical trials: Cerebrovascular Circulation, active
Magnetic Resonance Imaging, Cerebrovascular Circulation
Brain Blood Vessel Responses to Changes in Blood Flow
Brain blood flow will be measured during a simulated postural change test and while breathing increased levels of carbon dioxide using magnetic resonance imaging.
- Trial name
- NCT06629077
- Testing
- MRI, Prazosin
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Ischemic Stroke, Acute, Thrombectomy
CO2 Modulation in Endovascular Thrombectomy for Acute Ischemic Stroke
Acute ischemic stroke due to large vessel occlusion is responsible of cerebral blood flow impairment with a progressive and extensive ischemic process.
- Conditions
- Ischemic Stroke, Acute, Thrombectomy, Anesthesia, General, Cerebrovascular Circulation
- Trial name
- COMET-AIS (NCT05051397)
- Testing
- HYPERCAPNIA, NORMOCAPNIA
- Where
- France
- Volunteers
- 50 people
- Sponsor
- University Hospital, Clermont-Ferrand
Aortic Diseases, Cardiac Surgical Procedures
Selective Antegrade Cerebral Perfusion and Perioperative Optic Nerve Sheath Diameter in Ascending Aortic Surgery
In ascending aortic surgery the distal anastomosis may be constructed with the aortic cross-clamp maintained, or, where the extent of the aortic pathology and the geometry of the graft require it, after release of the cross-clamp…
- Conditions
- Aortic Diseases, Cardiac Surgical Procedures, Aortic Aneurysm, Thoracic, Delirium - Postoperative
- Trial name
- SACP-ONSD (NCT07800806)
- Testing
- Optic nerve sheath and optic nerve diameter ultrasonography, Transcranial Doppler ultrasonography
- Where
- Turkey (Türkiye)
- Volunteers
- 134 people
- Sponsor
- Koşuyolu Kartal Heart Training and Research Hospital
Cerebrovascular Circulation, Magnetic Resonance Imaging
Brain Blood Flow Responses During Exercise
Brain blood flow will be measured during exercise using magnetic resonance imaging.
- Trial name
- NCT05864950
- Testing
- MRI
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Cerebrovascular Circulation, Magnetic Resonance Imaging
Brain Blood Flow Responses During Exercise: Younger Cohort
Brain blood flow will be measured during exercise using magnetic resonance imaging.
- Trial name
- NCT06446622
- Testing
- MRI
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Magnetic Resonance Imaging, Cerebrovascular Circulation
Brain Blood Vessel Responses to Changes in Blood Flow: Younger Cohort
Brain blood flow will be measured during a simulated postural change test and while breathing increased levels of carbon dioxide using magnetic resonance imaging.
- Trial name
- NCT06629090
- Testing
- MRI, Prazosin
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Cerebrovascular Circulation, Physiology
Assessment of the Relationship Between Cerebral Blood Flow and Heart Rate
The investigators will seek to determine the relationship between heart rate and middle cerebral artery (MCA) cerebral blood flow (CBF), as well as better understand the hemodynamic determinants of MCA CBF velocity.
- Trial name
- NCT04391465
- Testing
- Electrophysiological Pacing
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- University of Calgary
Cerebrovascular Circulation
Study of Cerebral Vascular Reserve Using Pharmacological Testing With Acetazolamide: A Non-Inferiority Study of PET Method Compared to Conventional Reference Scintigraphy
This study compares two methods for assessing brain blood flow. PET scan will be use with a drug called Acetazolamide and compare its effectiveness to the standard scintigraphy method.
- Trial name
- DIAMOX-TEP (NCT06584747)
- Testing
- PET scan
- Where
- France
- Volunteers
- 19 people
- Sponsor
- Centre Antoine Lacassagne
Hyperoxemia, Cerebrovascular Circulation
HYPER MIND - Hyperoxia Effects on Cerebral Hemodynamics
This study aims to better understand how short periods of exposure to high oxygen levels affect blood flow in the brain of patients who are intubated and mechanically ventilated in the Intensive Care Unit (ICU).
- Conditions
- Hyperoxemia, Cerebrovascular Circulation, Cerebral Autoregulation, Critical Illness
- Trial name
- HYPER-MIND (NCT07377162)
- Testing
- Normobaric Hyperoxic Stimulus (NBHO)
- Where
- Belgium
- Volunteers
- 80 people
- Sponsor
- Erasme University Hospital
Cerebral Hemorrhage, Subarachnoid Hemorrhage
Brain PERfusion Evaluation by Contrast-Enhanced UltraSound
The objective of the study is to assess brain tissue perfusion by contrast-enhanced ultrasound perfusion imaging (PerCEUS) in acute brain injuries.
- Conditions
- Cerebral Hemorrhage, Subarachnoid Hemorrhage, Ischemic Stroke, Cerebrovascular Circulation
- Trial name
- PerCEUS (NCT05893407)
- Testing
- Measuring contrast-enhanced ultrasound perfusion with phase inversion harmonic imaging
- Where
- France
- Volunteers
- 60 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris