View clinical trials related to Magnetic Resonance Imaging.
Filter by:Endometriosis is a frequent pathology with an estimated prevalence of 10% of women of childbearing age. There is no exact correspondence between the symptoms described by the patients and the severity of the lesions, which makes clinical diagnosis difficult. It therefore seems important to improve the complementary examinations available to make the diagnosis more precise and to better study the effectiveness of the treatments implemented. The clinical examination and per-surgical findings of patients with deep pelvic endometriosis show a clear decrease in the mobility of the pelvic organs in relation to each other, but few studies have looked at this mobility, which could however have an implication in explaining the pathophysiology of the disease and the symptomatology of the patients, as well as in the detection of lesions preoperatively. The persistence of hypo-mobility could also help to understand treatment failures.
This study aims to assess the diagnostic performance of a new fast MRI sequence named Neuromix compared to routine clinical MRI for brain tumor in pediatric patients
This prospective study was conducted in a tertiary university hospital. The investigators researched the correlation between MRE-assessed stiffness of the liver and spleen and the Hepatic venous pressure gradient (HVPG) values. Furthermore, the investigator evaluated whether MRE-assessed stiffness reflected changes in portal hypertension (PH) after administering non-selective beta-blockers (NSBBs).
The goal of this multicenter prospective longitudinal study is to study the long-term impact of multimodal treatment (chemotherapy, radiotherapy and surgery) in adult brain and base of skull tumors on neurocognitive functioning. All included patients will complete a self-report inventory (subjective cognitive functioning, QoL, confounders), a cognitive test battery, an advanced MR at multiple timepoints. Moreover, toxicity will be scored according to the CTCAEv5.0 in these patients over time.
Polysaccharide super paramagnetic ferric oxide injection is an iron supplement developed for patients with iron deficiency anemia. Due to its characteristics, it has the potential to be a contrast agent. The DJTCSCYHT-I-04 study is a single-center, multiple-strength and single-dose phase I clinical study on cardiovascular MRI in patients with chronic kidney disease, aiming to investigate the effects and safety of multi-strength, single-dose at different time points, and to provide reference for clinical diagnosis and MRI enhancement.
A clinical study to investigate the absorption, metabolism and excretion of [14C] TQ-B3525 in Chinese adult male healthy subjects, aiming to quantitatively analyze the total radioactivity in the excreta of male healthy subjects after oral administration of [14C] TQ-B3525, obtain the data of human radioactive excretion rate and main drainage routes, investigate the distribution in whole blood and plasma, the distribution in plasma and the pharmacokinetics of total radioactivity in plasma, and identify the main metabolites, To determine the main biotransformation pathway and obtain the pharmacokinetic parameters of TQ-B3525 and its metabolites in plasma.
We investigated the relationship between fasting times and delirium in children undergoing MRI under anesthesia. Paediatric Anaesthesia Emergence Delirium (PAED) scale, last oral intake time and type of food (solid-liquid) and fasting time, laryngospasm, desaturation (SpO2 <95%), bradycardia, allergy, nausea and vomiting were recorded.
The prevalence of cognitive impairment in maintenance hemodialysis (MHD) patients is 3 to 5 times higher than that in ordinary people, so it is essential to find the associated risk factors in this population. This project intends to evaluate whether changes in cerebral blood flow during dialysis have an impact on cognitive function in middle-aged and elderly MHD patients and clarify their influence on brain imaging characteristics. MHD patients who started hemodialysis at 3 to 6 months were selected to examine the difference in middle cerebral artery flow rate before and after dialysis by transcranial Doppler ultrasound to reflect the changes in cerebral blood flow. Changes in the cognitive function scale assessment (memory, executive function, and other five cognitive domains) and brain magnetic resonance imaging examinations are planned to collect both at baseline and after a one-year follow-up. Then the investigator used the multiple linear regression method to analyze the effects of the difference in middle cerebral artery flow on the changes in cognitive function and the characteristics in brain imaging. The investigators anticipate that the characteristics of the influence of changes in cerebral blood flow on cognitive impairment in Chinese MHD patients will be elucidated in this study, which may provide crucial clinical evidence for finding preventive and intervention measures for cognitive impairment in this group of population.
Heart transplantation (HTx) is a well-established life-saving procedure but is associated with severe complications. Regular monitoring of heart transplant recipients is thus important for the early detection of these complications. Current standard clinical tests, however, rely on frequent invasive procedures including endomyocardial biopsies (EMB) and catheter angiography (Cath). In addition, these standard tests are limited by sampling error, the diffuse nature of HTx complications, and high health care utilization cost, estimated at >$150,000 per year per patient in the US. To address these limitations, our group has developed a non-invasive multiparametric cardiac MRI, which can quantify abnormal changes in heart tissue and function. Our efforts during the initial period of this study (NIH funded 2014-2019) have focused on the two major complications of HTx: 1) acute cardiac rejection (ACR), the leading cause of death in the first year after heart transplant; and 2) cardiac allograft vasculopathy (CAV), the greatest risk factor for 5-year mortality beyond the first year after heart transplantation. For these major compilation, our previous cardiac MRI studies have identified new non-invasive cardiac MRI measures that can detect abnormalities of heart tissue and function. In addition, the data was able to show that heart donor and recipient mismatch (age, sex, height, weight, etc.) can cause changes in tissue and function of the transplanted heart.
The diagnostic pathway for suspected prostate cancer relies greatly on radiological imaging. Establishment of magnetic resonance fingerprinting (MRF) has the potential to significantly improve patient experience and outcomes. MRF is a novel and innovative approach to a long-standing challenge of recording and reconstructing MR image The aim is to conduct a clinical pilot study in which patients will be scanned using the newly refined MRF sequence in addition to the conventional scanning protocols.