Active clinical trials for "Brain Diseases"

Hepatic encephalopathy is a severe complication of transjugular intrahepatic portosystemic shunt (TIPS) treatment in patients with cirrhosis and variceal bleeding. This study is specially designed to explore whether diet management strategy could decrease incidence of encephalopathy after TIPS treatment.

With 18F-FDG PET, we have few atlases of normality allowing the realization of objective quantitative analyses. An atlas of normality is a probabilistic atlas of normal FDG uptake from a representative set of brain PET images of healthy subjects. This type of atlas is essential for intra- and inter-individual comparisons. Accurate quantitative analysis of brain 18F-FDG PET images acquired on a hybrid PET system has been shown to require an institutional normal database for statistical analyzes (Akdemir et al., JNM 2017 and Della Rosa et al Neuroinformatics, 2014).

The primary objective of this study is to evaluate whether, in patients with first-ever atherothrombotic or lacunar stroke without any previous history of atrial fibrillation (AF)/atrial flutter (AFL)/atrial tachycardia (AT), the detection of AF/AFL/AT (silent or symptomatic) by using a continuous cardiac rhythm monitoring with implantable loop recorder (ILR) during the first 12 months of observation is higher than the detection by using a standard cardiac monitoring (physical exam, 12-lead electrocardiogram [ECG] at baseline, 3, 6, and 12 months and Holter ECG at 3 months) in the same period of time.

This study will explore the use of flortaucipir as a biomarker for chronic traumatic encephalopathy (CTE) and examine the relationship between clinical presentation and tau deposition.

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.

Altered mental status (AMS) is one of the most common reasons for inpatient neurology consultation. Non-convulsive status epilepticus (NCSE) is frequently on the differential diagnosis of the patient with AMS. NCSE becomes more refractory to treatment after one hour of seizure activity, making rapid identification and treatment of NCSE of great clinical importance. Currently, an electroencephalogram (EEG) technologist must be called in from home during non-workday hours in order to obtain a stat EEG. The investigators propose the time required for diagnosis of NCSE at Mayo Clinic can be significantly decreased with rapid placement of an EEG cap by the onsite neurology residents.

This study aims to test whether repeated sessions of tDCS result in long-lasting improvements in motor function in patients with chronic stroke.

This study is to evaluate the role of probiotics in the treatment of portal hypertension. In particular the role of probiotics on gut microbiota in liver cirrhosis patients will be studied and compared with cytokines and other substances implicated in the pathogenesis of portal hypertension. The hypothesis whether probiotics may change the prognosis of patients with portal hypertension will be studied. The hypothesis whether probiotics may halt the pathologic cascade of events leading to various complications (e.g. hepato-renal syndrome, spontaneous bacterial peritonitis, bleeding varices) will be reviewed.

The investigators wish to investigate how the Continuous Reaction Time (CRT) method can be used in the diagnosis and monitoring of covert hepatic encephalopathy (cHE)in patients with cirrhosis of the liver. The hypothesis is that the CRT method (duration 10-2 minutes) can serve as a tool in the diagnosis and monitoring of cHE and is an alternative to using the Portosystemic Encephalopathy Test (PSE)(duration 20-25 minutes).

The investigator aims to examine the clinical utility of WES, including assessment of a variety of clinical outcomes in undiagnosed pediatric cases.