Clinical trials: Perfusion
Emphysema
Hypoxic Pulmonary Vasoconstriction Pilot Study
The purpose of this study is to determine if the events leading to smoking-associated centrilobular and paraseptal emphysema are caused by a failure of the lungs' inherent mechanisms to block hypoxic pulmonary vasoconstriction…
- Trial name
- NCT03733470
- Testing
- Sildenafil study group
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Eric A. Hoffman
Sickle Cell Disease
Relationship Between Abnormal Myocardial Perfusion and Diastolic Dysfunction in Sickle Cell Disease Using PET
There is limited information on what causes injury to the heart in individuals with Sickle Cell Disease (SCD). Researchers in this study want to see if decreased blood flow to the heart during stress could be causing the heart…
- Trial name
- NCT05583721
- Testing
- [13N]NH3, Lexiscan, Positron emission tomography
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- St. Jude Children's Research Hospital
Obesity, Morbid, Diabete Type 2
Indocyanine Green Test for Evaluation of Perfusion of Staple Line of the Stomach During Laparoscopic Sleeve Gastrectomy
The investigators present the case of a 40-year-old female underwent laparoscopic sleeve gastrectomy. Intraoperative indocyanine green test was performed
- Conditions
- Obesity, Morbid, Diabete Type 2, Cardiac Disease, Vascular Diseases
- Trial name
- NCT05337644
- Testing
- Indocyanine green solution
- Where
- Italy
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- University of Foggia
Cerebral Blood Flow, Cerebral Perfusion Pressure
Continous Assessment of Cerebral Autoregulation With Near-infrared Spectroscopy
Cerebral autoregulation can be explained by a tight coupling between oxygen supply and demand of the brain, and is essential to maintain a constant cerebral blood flow (CBF) in the context of changes in cerebral perfusion…
- Trial name
- NCT02959008
- Testing
- measure TOI and BP
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Yu Liyun
Healthy Volunteers
Cardiac Water and Fluoromethane Cardiac PET
In this study we are looking at the blood flow to the heart using two different chemical tags or tracers that give off a low level of radiation. The tracers used in this study are called O15-water and F17-fluoromethane.
- Trial name
- NCT00205127
- Testing
- Cardiac PET imaging- rest and pharmacological stress
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
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
Osteoporosis, Fractures, Compression
Dynamic Magnetic Resonance (MR) Study in Evaluating the Vertebral Bone Marrow Perfusion and Its Related Research
The etiology and pathogenesis of osteoporosis has been extensively discussed. The relationship between bone blood circulation and the formation of bony trabeculae has been less understood.
- Trial name
- NCT00172224
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Acute Compartment Syndrome
Use of Near Infrared Spectroscopy to Detect Muscle Perfusion in the Lower Extremity of Uninjured Subjects
Acute compartment syndrome (ACS) is a complication of lower leg trauma that occurs when the pressure inside the leg due to swelling exceeds the body's ability to provide blood to the muscle of the leg.
- Trial name
- NCT01284023
- Testing
- Shaving
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- J&M Shuler
Coronary Artery Disease
Development and Translation of Generator-Produced PET Tracer for Myocardial Perfusion Imaging-Dosimetry Group
This study is a single center, early phase 1 clinical imaging study designed to assess the dosimetry of 68Ga-Galmydar for PET/CT imaging.
- Trial name
- GALMYDAR (NCT05280782)
- Testing
- Ga-68 Galmydar
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Hypertension, Chronic Kidney Disease
Accuracy of 1.5 T Versus 3 T Magnetic Resonance Arterial Spin Labeling to Measure Renal Blood Flow
In this study we want to compare the accuracy of two methods to measure renal perfusion by MRI spin labelling technique: the first measurement done with the 1.5 T MRI versus the second one obtained with the 3.0 T MRI (Siemens MRI…
- Trial name
- NCT02746549
- Testing
- renal perfusion
- Where
- Germany
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Erlangen-Nürnberg Medical School
Renal Function Test, Urine Output, Lactate Level
Dopamine and Norepinephrine Infusion With Restricted Hydration
This study was designed to assess the effect of adding dopamine infusion in addition to restrictive hydration combined with noradrenaline infusion on intraoperative serum lactate levels as an indicator for tissue hypo perfusion…
- Trial name
- NCT03780686
- Testing
- Norepinephrine, dopamine
- Where
- Egypt
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Prostate Neoplasm
Improvements in Dynamic Contrast-Enhanced MR Angiography and Perfusion and Non-Contrast MRI
This study evaluates if technical improvements in MRI can be used to provide improved performance contrast-enhanced MRI as used for angiography and perfusion as well as in non-contrast MRI.
- Trial name
- NCT06315595
- Testing
- Non-Interventional Study
- Where
- 2 sites in United States
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Retinal Diseases
Arterial Spin Labeling MRI for Assessing Blood Perfusion in the Human Eye Repeatability Study and Clinical Application
The MRI perfusion imaging using arterial spin labeling (ASL)'s non-invasive technique (i.e. without injection of contrast medium) allows, thanks to recent technological improvement of the spatial resolution, measuring several…
- Trial name
- PerfRet (NCT05724641)
- Testing
- MRI perfusion imaging using ASL's non-invasive technique
- Where
- Belgium
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Non-Obstructive Coronary Atherosclerosis
Effect of Mental Stress on Myocardial Perfusion in Women
Mental stress-induced myocardial ischemia(MSIMI) has been recognized a significant clinical problem. Evidence has shown that individuals with MSIMI have 2 to 2.5 times higher risk to develop a major averse cardiovascular events…
- Trial name
- MS in women (NCT03982901)
- Testing
- Mental Stress Test
- Where
- China
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Guangdong Provincial People's Hospital
Peripheral Perfusion, Postoperative Pain
Effects Magnesium Sulfate and Labetalol Infusion on Peripheral Perfusion and Pain in Nasal Surgeries
One of main risk of controlled hypotension during nasal surgeries is impaired perfusion. Peripheral perfusion of non-vital organs usually impaired earlier than vital organs.
- Trial name
- NCT04688203
- Testing
- Magnesium Sulfate Injection, Labetalol Injectable Solution
- Where
- Egypt
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Zagazig University
Lung Perfusion, Respiratory Physiology
Effects of Inspiratory vs Expiratory Breath-Hold on Lung Perfusion Measured by EIT Saline Indicator Method: A Self-Controlled Study
This study aims to compare lung perfusion distribution between inspiratory breath-hold and expiratory breath-hold phases using the saline indicator method combined with electrical impedance tomography (EIT).
- Conditions
- Lung Perfusion, Respiratory Physiology, Electrical Impedance Tomography, Ventilation-Perfusion Mismatch
- Trial name
- NCT07303972
- Testing
- Electrical Impedance Tomography Saline Indicator Procedure, Electrical Impedance Tomography Device
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Shanghai Zhongshan Hospital
Very Preterm Infants
Plasma Protein Levels and Very Preterm Birth
The primary aim of this study is to investigate the relationship between early plasma protein levels and hemodynamics in very preterm infants during postnatal transition.
- Trial name
- ProHémie (NCT02007902)
- Testing
- Evaluation of the relationship plasma protein levels - neonatal hemodynamics
- Where
- 2 sites in France
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de la Réunion
Knee Osteoarthritis
Diagnostic Value of a Biomarker of Non-surgical Knee Osteoarthritis
Osteoarthritis is a very common pathology, especially in an aging population, and a source of disability. Based on standard radiography, the diagnosis is performed late based on the loss of the cartilage thickness.
- Trial name
- GENU-PERF (NCT04324554)
- Testing
- MRI of the right knee
- Where
- France
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- Lille Catholic University
Surgery, Fluorescence
ICG Indocyanine Green in Reconstructive Surgery
The success or failure of a reconstruction is largely related to the vascularization of the operated area. Near infrared fluorescence (also near infrared fluorescence angiography, NIR FA) with ICG administration is an innovative…
- Trial name
- ICG-R (NCT06129669)
- Testing
- Indocyanine green
- Where
- Netherlands
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Amsterdam UMC, location VUmc
Myocardial Perfusion
Assessment of Myocardial Perfusion by Tomography and Scintigraphy in Patients With Cardiac Stress Test With Ischemia
Cardiovascular diseases are important cause of death, and of these have highlighted the Coronary Artery Disease (CAD) and its various clinical manifestations.
- Trial name
- Perfusão (NCT02810106)
- Where
- Brazil
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo General Hospital