Clinical trials: Contrast Agent
Old Age (Focus; Not a Recognized Condition)
Dysfunction of Nutritive Blood Flow as a Determinant of Anabolic Resistance With Age; the Role of Amino Acids in Modulating Muscle Metabolism
The investigators plan to measure changes in muscle protein metabolism in response to feeding, comparing between a single large essential amino acid (EAA) feed (the normal building blocks of protein) and the provision of the same…
- Trial name
- Ajinomoto1A (NCT01735539)
- Testing
- 15g EAA bolus, 4 x 3.75g Mixed EAA Pulses, 15g EAA Bolus supplemented with 3g Arginine
- Where
- United Kingdom
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Nottingham
Hypertension,Essential
Brain BOLD fMRI in Hypertensive and Normotensive Participants
This study will explore the brainstem activity in response to stress in hypertensive patients and normotensive subjects. In addition, it will evaluate if the response in hypertensive patients can be modulated by blocking the…
- Trial name
- BRAIrdN (NCT03473275)
- Testing
- Cold Pressor test, PinPrick test
- Where
- Switzerland
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire Vaudois
Visual Acuity
Visual Outcomes of a Segmental Refractive Multifocal Intraocular Lens
To evaluate visual outcomes of a segmental refractive multifocal intraocular lens (IOL) after cataract surgery.
- Trial name
- NCT03452969
- Testing
- Implantation of multifocal intraocular lens
- Where
- Germany
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University Clinic Frankfurt
Limbal Dermoid
Visual Quality and Contrast Sensitivity Function for Limbal Dermoid Children After Corneal Transplantation
This study is to inquiry the contrast sensitivity function in the 50 eyes of limbal dermoid children with keratoplasty with quick contrast sensitivity function (quick CSF) test, as well asa to analyze its relationship between…
- Trial name
- NCT03447041
- Where
- China
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Acute Kidney Injury (Nontraumatic)
Study of CXA-10 in Healthy Volunteers
This will be the first-in-human (FIH) study with CXA-10. The main purpose of this trial is to demonstrate the tolerability, safety and pharmacokinetics (PK) of CXA-10 at various incremental doses, and to demonstrate the safety…
- Trial name
- NCT02127190
- Testing
- CXA-10 emulsion
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Complexa, Inc.
Exposure to Medical Diagnostic Radiation
Low Tube Voltage Computed Tomographic (CT) Urography Using Low Concentration Iodine Contrast Agent
Computed Tomographic (CT) urography is the best imaging modality to evaluate obstructing lesions of urinary tract such as urinary stone, tumor and inflammatory lesion.
- Trial name
- NCT01855204
- Testing
- Computed tomographic urography
- Where
- South Korea
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Cerebrospinal Fluid
Assessment of Cerebrospinal Fluid Flow Related Disorders Using a Phase-contrast Magnetic Resonance Imaging Technique.
Cerebrospinal fluid is a clear, colorless fluid that circulates in the cranial and spinal subarachnoid spaces, located between the pia and arachnoid matters.
- Trial name
- NCT03656016
- Testing
- Magnetic Resonance Imaging
- Where
- Egypt
- Volunteers
- 87 people, healthy volunteers welcome
- Sponsor
- Assiut University
Healthy Volunteers
Imaging Techniques in CT: Technical Development
Background: Computed tomography (CT) scanning is a procedure that helps doctors with diagnoses. It uses X-ray radiation to produce an image in three dimensions.
- Trial name
- NCT02242448
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- National Institutes of Health Clinical Center (CC)
Bleeding
Assessment of Limb Perfusion During Junctional Tourniquet
The goal of this study is to use contrast enhanced ultrasound to determine the degree to which flow is reduced during application of a junctional tourniquet (JT).
- Trial name
- NCT02092415
- Testing
- Application of a Junctional Tourniquet
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Oregon Health and Science University
Healthy Aortic Blood Flow
Quantifying Blood Flow in the Aorta
This study aims to gain insights into aortic blood flow in healthy volunteers using PC 4D-flow MRI
- Trial name
- AF-4DMRI-P2 (NCT07577752)
- Testing
- 4D-flow Magnetic Resonance Imaging, Questionnaires
- Where
- Netherlands
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- University of Twente
Endometriosis, Sigmoid, Endometriosis, Rectum
Three-dimensional (3D) Rectal Water Contrast Transvaginal Ultrasonography Versus Computed Colonography in the Diagnosis of Rectosigmoid Endometriosis
Rectosigmoid involvement by endometriosis causes intestinal symptoms such as constipation, diarrhea, and dyschezia. A non-invasive diagnosis of bowel endometriosis is relevant to provide the patients information on the potential…
- Trial name
- NCT04295343
- Testing
- Three-dimensional (3D) rectal water contrast transvaginal ultrasonography, Computed colonography
- Where
- Italy
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- Ospedale Policlinico San Martino
Peripheral Vascular Disease
RCT to Evaluate the Renal Protective Effects of Remote Ischaemic Preconditioning in Peripheral Angioplasty
This study aims to demonstrate if remote ischaemic preconditioning (RIPC) may confer renal protection in patients undergoing peripheral angioplasty.
- Trial name
- NCT02054871
- Testing
- RIPC
- Where
- Ireland
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Mid Western Regional Hospital, Ireland
Normal CT Scan, Dysplasic Disease
Dose-Quality Study in the Temporal Bone Computed Tomography in Routine Care
Because of the complexity of the structures studied, imaging the temporal bone requires compliance with a number of image quality criteria, in order to achieve optimum spatial resolution of the most clinically relevant anatomical…
- Conditions
- Normal CT Scan, Dysplasic Disease, Tumoral Disease, Infectious Disease
- Trial name
- NCT06827106
- Where
- France
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Aix Marseille Université
Healthy Volunteer Study
Safety Study of CZ10 in Healthy Volunteers
A randomized, double-blind, placebo-controlled, parallel group, dose escalation study in healthy subjects to evaluate the safety, tolerability, pharmacokinetics and initial effectiveness of a novel intravenous CT contrast…
- Trial name
- NCT06708767
- Testing
- Contrast Media
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Nextrast, Inc.
Contrast-induced Nephropathy, Coronary Angiography
Relative Bioavailability of CE-Iohexol (Captisol-enabled™ Iohexol) Injection and Omnipaque™ Injection
This study is designed to compare the bioavailability of the test Product(CE-Iohexol Injection) and the reference product Iohexol Injection (Omnipaque™) following intravenous injection in normal healthy volunteers.
- Trial name
- NCT03869983
- Testing
- Omnipaque™ (iohexol) Injection, CE-Iohexol
- Where
- Canada
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- CyDex Pharmaceuticals, Inc.
Microangiopathy, Microvascular Complications
Microangiopathy in Diabetes
This clinical trial aims to evaluate the use of a contactless and non-invasive technique to measure the properties of the skin's microcirculation and its regulatory functions in both healthy individuals and patients with…
- Trial name
- MIND (NCT07145567)
- Where
- Sweden
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Myopia, Myopia Progression, Lag of Accommodation, Hyperopic Retinal Blur, Reduction in Contrast
Lag of Accommodation With DOT Spectacle Lenses
The objective of the study is to measure the difference in the lag of accommodation between DOT spectacle lenses and control spectacles.
- Trial name
- ASH (NCT04700111)
- Testing
- DOT Pattern, Control Spectacles
- Where
- Canada
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- SightGlass Vision, Inc.
Gadolinium Toxicity
In Vitro Study of the Effect of Gadolinium Contrast on Fibrocytes
Gadolinium contrast agents are frequently administered for MRI imaging. Very little is known of its toxicity outside of patients with reduced renal function.
- Trial name
- NCT02512796
- Testing
- Gadolinium contrast dye
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Virginia
Gadolinium, MultiHance
Gadolinium Retention in Human Bone Tissue in Pediatric Patients
The purpose of this study is to compare contrast agents, Dotarem or MultiHance. The study will test to see how much of these two contrast agents are deposited in the bones or tissues of pediatric patients.
- Conditions
- Gadolinium, MultiHance, Dotarem, Magnetic Resonance Imaging
- Trial name
- NCT03337594
- Testing
- Pre-operative MRI with Dotarem, Pre-operative MRI with MultiHance, Surgery
- Where
- United States
- Volunteers
- 57 people, healthy volunteers welcome
- Sponsor
- Donna Roberts
Right-to-left Shunt, Migraine
Registry of Right-to-left Shunt Detection by Contrast-enhanced Transcranial Doppler in Chinese Population
The purpose of the study is to evaluate the prevalence and extent of right-to-left shunt (RLS) in Chinese migraineurs, and the morbidity of silent cerebral infarction in migraineurs.
- Conditions
- Right-to-left Shunt, Migraine, Cerebral Infarction
- Trial name
- NCT02425696
- Where
- China
- Volunteers
- 1,100 people, healthy volunteers welcome
- Sponsor
- Yingqi Xing