16 Clinical Trials for Various Conditions
The goal of this study is to evaluate safety and efficacy of Dotarem enhanced MRI in pediatric and neonatal population who are referred for contrast enhanced MRI at Phoenix Children's Hospital.
The purpose of this study is to look at the safety (what are the side effects)and efficacy (how well does it work) of Dotarem® when used in taking images of the brain / spine. The results will be compared to the results of MRI taken without Dotarem.
Standard breast MRI studies often have lengthy protocols that make them inherently expensive and time-consuming. Several studies of the use of abbreviated MRI protocols have shown that the shorter protocols have diagnostic accuracy comparable to that of the conventional full MRI protocol. There are also promising results of ultrafast DCE-MRI studies with shorter breast MRI protocols that provide not only morphologic but also valuable kinetic information about a lesion. The shorter imaging times achieved with the abbreviated and the ultrafast DCE-MRI protocols have the potential to increase efficiency and lower cost by decreasing time in the MRI suite, which in turn may make breast MRI accessible for population-based mass screening. The focus of the proposed research is the investigation of an abbreviated MRI protocol with ultrafast imaging using Dotarem® (Gadoterate Meglumine).
The overall goal of this study is to investigate the signal intensity and relaxation rate characteristics of gadoterate meglumine (Dotarem, Guerbet, USA) enhanced myocardium during rest and stress perfusion cardiovascular magnetic resonance (CMR) compared to gadobutrol (Gadavist) to prove that Dotarem provides constantly high myocardial relaxation necessary for accurate quantitative perfusion evaluation. The purpose of this study is to compare two types of contrast that patients receive during cardiac MRI scans to visualize the blood flow in the cardiac muscle. Both contrasts are used in standard of care procedures, and the one administered for each patient will be randomly selected. The length of the MRI study all procedures are the same as the clinically indicated scan.
In this randomized clinical trial, the investigators expect to demonstrate that the MRI contrast agent Dotarem is not less effective in contrast enhancement of breast lesions then Gadavist. Participants will be randomized to receive either Dotarem or Gadavist. In all cases, inclusion criteria will require patients having undergone or scheduled or most likely to be scheduled to undergo tissue sampling with histology results available. The patients will be prospectively and consecutively identified such that the majority of patients included will have been diagnosed with breast cancer, while including benign disease in the minority of patients in each arm. Following randomized enrollment, quantitative, semi-quantitative and qualitative image analysis will be performed to objectively assess for differences in image quality and diagnostic value.
The study was conducted to gain knowledge about a new dose of a diagnostic drug that is used for contrast-enhanced Magnetic Resonance Imaging (MRI) of the human central nervous system (CNS). MRI can visualize the anatomy of the body and is used to detect medical conditions. Diagnostic drugs like gadobutrol and gadoterate contain an element called gadolinium that is applied to improve the analysability of MRI-images. The purpose of this study was to examine if contrast-enhanced MRI using a reduced dose of the gadolinium-based contrast agent gadobutrol delivers images of similar quality to those obtained when a full dose of the gadolinium-based contrast agent gadoterate was used.
Our primary outcome is to assess the safety of Dotarem in children \<2 years old up to 24 hours after Dotarem injection. Patients will be monitored for any adverse events that occur for 2 hours following the completion of the MRI exam. The type of event, time of onset, duration of symptoms, intensity of the reaction (mild, moderate, severe), causality (not related, probably related, related, definitely related, unclassifiable), and subsequent outcome (required treatment, favorable outcome, recovery with sequela, or death) will be documented. Parents will be given instruction sheets on who and when to call should any adverse event occur after discharge. Parents will be called by the radiology department the next day to identify any adverse events that occurred during the first 24 hours after discharge from the hospital. Our secondary outcome is to assess image quality of the exam. The pre-contrast images will be compared to the combined pre- and post-contrast images following administration of Dotarem by radiologists who are blinded to the patients' clinical information to assess for improvement of image quality and delineation of structures with contrast.
The purpose of this study is to evaluate changes in volunteer breath-holding capacity in response to gadoxetate disodium (Eovist) administration, compared with saline, and gadoterate dimeglumine (Dotarem). Healthy volunteers will be recruited from three study sites. These subjects will be given three, blinded, randomized injections while undergoing an MRI of their liver and holding their breath. During the scan, the subjects' oxygen saturation and heart rate will be closely monitored. Following the scan, the subjects will complete a questionnaire regarding the breath hold.
This study aims at a comparison between MultiHance at a dose of 0.1 mmol/kg and 0.05 mmol/kg and Dotarem at a dose of 0.1 mmol/kg in brain tumor patients to show superiority of MultiHance.
The purpose of this study is to demonstrate non-inferiority of Dotarem®-enhanced MRI as compared to Gadovist®/ Gadavist®-enhanced MRI in the diagnosis of brain tumors in terms of overall lesion visualization and characterization (off-site assessment). 270 patients will be randomized between 2 arms defining the sequence of administration of the contrast agents at the dose of 0.1mmol/kg, with a minimum of 48 hours and a maximum of 14 days in between. Each patient will, therefore, receive two MRI during his/her participation in the study. The two arms consist in : * Dotarem® in the first MRI, then Gadovist®/Gadavist® in the second MRI. * Gadovist®/Gadavist® in the first MRI, then Dotarem® in the second MRI. Contrast-enhanced MRIs will be performed on 1.5 or 3 Tesla systems. MRI examinations will be evaluated centrally by blinded independent readers for the main evaluation criterion.
The main purpose of this study is to prospectively estimate the incidence of Nephrogenic Systemic Fibrosis (NSF) in patients with moderate to severe renal impairment after administration of Dotarem®
The study will evaluate the efficacy and safety of Dotarem enhanced MRA in patients suffering from carotid or vertebral arterial disease.
The study will evaluate the efficacy and safety of Dotarem enhanced MRA in patients suffering from carotid or vertebral arterial disease.
The study will evaluate the efficacy and safety of Dotarem enhanced MRA compared to TOF MRA in patients suffering from renal arterial disease.
The study will evaluate the efficacy and safety of Dotarem enhanced MRA compared to TOF MRA in patients suffering from renal arterial disease.
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. The patients receiving contrast will then be compared against pediatric patients who have not received any contrast prior to cardiac surgeries.