Clinical trials: Ultrasonography, Doppler
Chocolate Consumption
Renal Ultrasound Response After Chocolate Consumption
The consumption of dark chocolate (DC) has antihypertensive (3) and anti-inflammatory effects. Some studies also suggest that dark chocolate may also have cardiovascular benefits, but its physiological effects on the kidneys have…
- Trial name
- Choco (NCT05755217)
- Testing
- Dark chocolate, White chocolate
- Where
- 2 sites in Switzerland
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Gregoire Wuerzner; MD
Preterm Birth, Prenatal Care Late
This Study Was to Investigate the Efficacy of Fetal Right Heart Doppler Findings in Determination of Pulmonary Maturity
Objective: The aim of this study was to investigate the efficacy of fetal right heart doppler findings in determination of pulmonary maturity.
- Conditions
- Preterm Birth, Prenatal Care Late, Preterm Labor
- Trial name
- NCT04296591
- Testing
- fetal heart doppler findings
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Karadeniz Technical University
Upper Limb Ischemia, Vascular Disease
Hand Acceleration Time Assessment With Ultrasound Doppler
Chronic upper limb ischemia syndrome is uncommon compared to lower limb ischemia, with several potential causes (e.g., arteriosclerosis, compressive syndromes, arteritis, connective tissue diseases, trauma, and thrombosis).
- Trial name
- HAT (NCT05977725)
- Testing
- Hand Doppler Ultrasound
- Where
- Spain
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Hospital Universitari de Bellvitge
Malignant Tumor of Women's Reproductive System
Characterizing Malignant Tumors Using Ultrasound Doppler Imaging
The aim of this study is to determine whether Ultrasound Doppler imaging can identify malignant tumors at a very early stage.
- Trial name
- NCT03598335
- Testing
- Ultrasound
- Where
- Israel
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hillel Yaffe Medical Center
Pregnancy Related
The Acute Effect of Physical Exercise in Pregnancy
The goal of this crossover clinical trial is to investigate the acute physiological effect of exercise on the uterine and fetal blood flow in pregnancy.
- Trial name
- NCT06565182
- Testing
- Exercise
- Where
- Belgium
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University Hospital, Antwerp
Primary Prevention
Genetical, Anthropometrical and Biochemical Factors Influencing High Risk Subclinical Atherosclerosis
Subclinical atherosclerosis is the atherosclerotic process identified before clinical symptoms and thus it can be a useful marker of future cardiovascular events. It can be evaluated by many methods.
- Trial name
- NCT02487615
- Where
- 2 sites in Brazil
- Volunteers
- 340 people, healthy volunteers welcome
- Sponsor
- Instituto Dante Pazzanese de Cardiologia
Chronic Cerebrospinal Venous Insufficiency
Doppler Sonography, MR Venography, Plethysmography for the Diagnosis of CCSVI
This study is aimed at evaluation of diagnostic value of Doppler sonography, MR venography and air-plethysmography for the assessment of abnormalities in the internal jugular veins, with catheter venography as the reference test.
- Trial name
- NCT01425554
- Testing
- Doppler sonography of internal jugular veins, Magnetic resonance venography of internal jugular veins, Air-plethysmography of the neck
- Where
- Poland
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Euromedic Specialist Clinics, Poland
Fetal Doppler, Uterine Blood Flow
Fetal Doppler and Uterine Artery Blood Volume Correlation.
To investigate the relationship between uterine artery blood volume and fetal doppler indices at the delivery.
- Trial name
- NCT05389553
- Testing
- Ultrasound exam
- Where
- Italy
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- University of Campania Luigi Vanvitelli
Difference in Measured Results Using Four Different Strokevolume Measurements Simultaneously.
Real-time Comparison of Left Ventricular Strokevolume Measurement by Four Different Methods
Real-time comparison of three different bedside strokevolumemeasurements (arterial waveform analysis, eosofageal doppler and 2D transthoracal ultrasound) validated against cardiac magnetic resonance imaging (CMRI)
- Trial name
- FourComp (NCT01791283)
- Testing
- Arterial waveform analysis, esofageal doppler, transthoracal cardiac ultrasound, Cardiac magnetic resonance imaging.
- Where
- Sweden
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University Hospital, Linkoeping
Total Knee Anthroplasty, Venous Insufficiency (Chronic)(Peripheral)
Impact of Chronic Venous Insufficiency on Outcomes After Total Knee Arthroplasty
Total knee arthroplasty (TKA) is an effective treatment for end-stage knee osteoarthritis; however, postoperative complications-particularly wound healing problems-remain a significant concern.
- Conditions
- Total Knee Anthroplasty, Venous Insufficiency (Chronic)(Peripheral), Doppler Ultrasound Diagnosis
- Trial name
- VENOUS-TKA (NCT07577141)
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- SB Istanbul Education and Research Hospital
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
Cardiovascular System
Effects of Caffeine on Cerebral Blood Flow
The goal of this clinical trial is to evaluate in clinically healthy young people if: after caffeine ingestion, there are variations in blood velocity of the middle cerebral arteries (VMCA), this variation is dependent on the…
- Trial name
- NCT05866848
- Testing
- Anhydrous caffeine (45mg), Anhydrous caffeine (120mg)
- Where
- Portugal
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Escola Superior de Tecnologia da Saúde de Coimbra
Pre-eclampsia, Intra-uterine Growth Restriction
Observational Study in UTERO - Placental 3D Doppler Examination: Interest for Pre-eclampsia Screening During Pregnancy
Pre-eclampsia and intra uterine growth restriction (IUGR) represent major complications for pregnant women, with a high related maternal and fetal morbidity and mortality.
- Conditions
- Pre-eclampsia, Intra-uterine Growth Restriction, Placental Insufficiency, 3D Doppler Ultrasound
- Trial name
- PLACENTA3D (NCT00930397)
- Where
- France
- Volunteers
- 146 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Other Acute Illnesses Presenting to the Hospital, Heart Failure
Evaluation of Implementation of a National Point-of-Care Ultrasound Training Program
This VA QUERI Partnered Evaluation Initiative will evaluate the impact of an immersive Point-of-care Ultrasound (POCUS) Training Course on provider skill acquisition and retention; the frequency of POCUS use by trained providers…
- Conditions
- Other Acute Illnesses Presenting to the Hospital, Heart Failure, Pneumonia, Deep Venous Thrombosis
- Trial name
- NCT03296280
- Where
- United States
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Type 1 Diabetes Mellitus
Doppler Ultrasound Investigation of Microcirculations
The investigators aim to show that quantitative analysis of doppler flow velocity waveforms i.e. ultrasound which is a non-invasive and very safe means of assessing blood flow; recorded in the proximity of terminal microvascular…
- Trial name
- NCT01045005
- Testing
- Administration ofOxygen and carbon dioxide, Administration of Oxygen and carbon dioxide
- Where
- United Kingdom
- Volunteers
- healthy volunteers welcome
- Sponsor
- Queen's University, Belfast
Breast Cancer
Combined Elastography and Color Doppler Ultrasonography for Breast Screening With Ultrasound
The investigators hypothesis is that the combined use of elastography and color doppler ultrasonography can increase positive-predictive value of breast screening with ultrasound.
- Trial name
- NCT01963624
- Testing
- Ultrasonography
- Where
- 10 sites in South Korea
- Volunteers
- 1,241 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Venous Thrombosis
Study of Arixtra (Fondaparinux Sodium) to Prevent Blood Clots in Women Undergoing Abdominopelvic Surgery for Likely Gynecologic Malignancy
This is a randomized trial to compare intermittent compression devices with or without post-operative Arixtra (fondaparinux sodium) in women undergoing major abdominal surgery for known or presumed gynecologic malignancies.
- Trial name
- NCT00539942
- Testing
- Arixtra (fondaparinux sodium), Intermittent compression devices (ICD)
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Ultrasound
Reproducibility of Flow Measurements in the SMA Using Doppler Ultrasound
This will be a single center, methodological study in healthy male subjects to evaluate the intra-period, inter-period and inter-observer reproducibility of flow measurements in the superior mesenteric artery, using Doppler…
- Trial name
- NCT04419220
- Testing
- Doppler Ultrasound
- Where
- Belgium
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Healthy Amateur Divers
Effects of Voluntary Neck Extension on Cerebral Blood Flow, in Breath-hold Divers Ending an Apnoea of Two Minutes or More.
The aim of this study is to demonstrate the effect of the voluntary neck extension in the occurrence of an increase in the pulsatility index of the right internal carotid artery in the amateur diver, realizing an apnea of two…
- Trial name
- APNECK (NCT03210857)
- Testing
- apnea performing
- Where
- France
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Nantes University Hospital
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