620 Clinical Trials for Various Conditions
The primary objective of this study is to assess the safety of the 3D Transcranial Ultrasound Brain Imaging (3D TRUBI) device in Traumatic Brain Injury (TBI) patients with intracranial hemorrhage (ICH). The secondary objective is to assess the diagnostic potential of 3D TRUBI. The latter will be achieved by comparison of 3D TRUBI scans with admission head computed tomography (CT), the standard of care diagnostic modality. Demonstrating the feasibility and safety of the 3D TRUBI system is the first step toward expanding access of an alternative to CT for diagnostic imaging and triage of mass casualties of war or natural disasters in the field and in rapidly deployed medical centers or other austere environments.
This study will examine a potential relationship between family history of obesity, that is whether people with at least one parent who had obesity in adulthood compared to people with two parents who did not have obesity in adulthood, and the ability of protein intake to curb further intake of food.
The goal of this proposal is to develop brain imaging tools to measure the effects of methylphenidate in children and adolescents with attention deficit hyperactivity disorder (ADHD). Methylphenidate is an FDA-approved treatment for ADHD. Specifically, the investigators will correlate brain activity during cognitive tasks and brain chemistry with cognitive performance. These measures could help the investigators understand how current ADHD medications work and then could be used to develop novel drugs to treat ADHD in children and adolescents.
This research study aims to learn more about opioid use disorder (OUD) during pregnancy and how outcomes for pregnant women and their newborns can be improved. During pregnancy, people with OUD are prescribed medication-assisted therapy (MAT). The investigators are interested to know how the medication is broken down by the body during pregnancy and how effective it is. The investigators also want to learn if this medication and OUD have any effect on the different parts of the brain when compared to mothers without OUD.
The purpose of this study is to examine whether experiencing a social stressor prior to the collection of neuroimaging measures is associated with differences in brain activation in healthy participants.
The purpose of this study is to investigate whether transcranial direct-current stimulation (tDCS) will engage reward-related brain circuitry, more specifically the uncinate fasciculus (UF) tract, which connects the orbitofrontal cortex (OFC) and nucleus accumbens (NAcc) regions. Also to evaluate whether the changes in the fractional anisotropy (FA) of the UF tract are associated with changes of clinical symptoms of anhedonia and finally to investigate the moderation role of simulated electric fields (EFs) in an association between FA of the UF and symptoms of anhedonia.
Up to 78% of women diagnosed with breast cancer experience impairments in their cognitive function (e.g., frequent forgetfulness, slow processing speeds, and difficulties in concentration, multitasking and/or word retrieval) in the course of cancer treatment. These cognitive impairments (CI) have negative effects on patients' social relationships, overall life satisfaction, and treatment adherence. Dietary intake may be an important factor in mitigating risk of CI that breast cancer patients experience. Several studies have suggested that dietary intake of specific nutrients and foods (e.g., carotenoids, B-vitamin, and omega-3 fatty acids rich foods) can be helpful to decrease the severity of cancer-related cognitive impairment (CRCI). High-quality dietary patterns can be also helpful to protect white matter volume and its integrity; damage to and changes in white matter contributes to CRCI. However, despite the high incidence of CRCI in breast cancer patients, very little is known about etiology of CRCI. Thus, the purpose of this observational study with cross-sectional design is to examine the relationships of diet with brain structural and functional outcomes of breast cancer patients. The study will aim to enroll 30 female postmenopausal breast cancer survivors (age 45-75) who have recently completed chemotherapy treatment within 3-12 months from study enrollment. Participants will complete study questionnaires online, and will have an in-person study visit to complete a functional magnetic resonance imagine (MRI) scan, cognitive testing, and blood sample collection via fingerstick and venous blood draw. It is expected that this study will advance the field's understanding and ability to early assess, manage, and prevent CRCI.
The MiSBIE study collects biological, behavioral, psychosocial, neuropsychological, and brain imaging data in participants with either: normal mitochondrial function, individuals with the m.3243A\>G mitochondrial DNA (mtDNA) mutation, and individuals a single large-scale mtDNA deletion. These defects induce mitochondrial allostatic load (MAL). The 2-day protocol, plus home-based data collection, will provide a comprehensive assessment of the multi-systemic dysregulation associated with MAL or mitochondrial dysfunction, and the link to physical and mental health-related symptoms. Aim 1: Determine the influence of MAL on systemic AL biomarkers. Aim 2: Establish the influence of MAL on stress reactivity profiles. Aim 3. Examine the association between MAL and psychological functioning.
The investigators' goal is to develop neuroimaging biomarkers to predict response to treatment with methylphenidate, which then can be used in the development of novel pharmacological treatments for attention-deficit/hyperactivity disorder (ADHD). The overall objective of this study is to measure the changes in task-related neural activity related to symptoms of ADHD (measured by functional MRI) and brain glutamate levels (measured by magnetic resonance spectroscopy, MRS) after treatment with methylphenidate (MPH). This will be a double-blind crossover of methylphenidate and placebo in adults with ADHD. Participants will complete neuropsychological testing along with fMRI and MRS scans after a single dose of each treatment.
In this protocol, "Brain imaging biomarkers for response to Spinal Cord Stimulation in patients with chronic low back pain," the investigators plan to perform brain mapping studies in 42 patients who are undergoing spinal cord stimulation (SCS) for chronic low back pain (CLBP) as part of the participants normal clinical care during a 2-year period. This imagining study is completed for research purposes. There is no standard of care imaging for the participants. This study requires two visits in total. During the baseline visit, participants will undergo imaging acquisition protocol and corresponding assessments. Participants will have another follow-up visit (potentially remotely) for final assessments two weeks after the SCS treatment. The objective of the study is to investigate potential imaging biomarkers that can predict response to the SCS treatment. Specifically, the investigators hypothesize that the connectivity of a certain region of the brain (specifically the subgenual cingulate) prior to SCS may serve as a possible pre-operative imaging-based biomarker on response to SCS. The findings of the study may further enhance investigators understanding of the connectivity between brain areas that are critical to the therapeutic response to SCS in CLBP patients and that can be used as a putative biomarker to select patients who may respond to SCS.
Participants with known or suspected hydrocephalus will receive brain scans using the Hyperfine, low field strength, portable, magnetic resonance imaging (MRI) system in addition to their scheduled outpatient standard of care clinical computed tomography (CT) or MRI scan. The purpose of this pilot study is to evaluate the feasibility and acceptability of using the Hyperfine system in an outpatient setting and to compare its diagnostic performance to standard clinical imaging. Outpatients with other known or suspected neurological disorders or conditions prompting routine clinical brain imaging with MRI or CT will also be enrolled and the diagnostic performance of low field scans compared to that of the same day standard of care clinical imaging.
This trial gathers information from patients with primary central nervous system or base of skull tumors that receive proton beam therapy and see if certain imaging techniques can help detect radiation-related changes over time. This study may help providers learn more about proton beam radiotherapy and how to improve the way it is delivered.
The proposed study will help fill gaps in existing research by determining if nicotine-dependent cigarette smokers show changes in α7 nicotinic acetylcholine receptor (nAChR) availability when compared to matched historical controls using positron emission tomography (PET) imaging and the radioactive ligand \[18F\]-ASEM (3-(1,4-diazabicyclo\[3.2.2\]nonan-4-yl)-6 \[18F\]fluorodibenzo\[b,d\]thiophene 5,5-dioxide), an α7 nAChR antagonist. The study will also explore whether α7 nAChR availability influences clinically relevant measures of tobacco abstinence (e.g., withdrawal and craving, cognitive impairment), self-reported cigarettes per day, and time to relapse during an 8-day quit attempt during which smokers can receive escalating payments contingent upon providing objective evidence (breath CO and urinary cotinine) of smoking abstinence.
Benign Prostatic Hyperplasia (BPH) affects the storage and voiding phases of the micturition cycle. Lower urinary tract symptoms (LUTS) refers to storage symptoms such as urinary frequency, urgency, urge urinary incontinence and nocturia. Surgical options for bladder outlet obstruction (BOO), including prostate ablation and transurethral resection, are currently offered for symptomatic improvement. However, 30% of patients report persistent LUTS after BOO procedures. Neuroplasticity induced by BPH and BOO can be contributory of persistent LUTS in these men, having different brain activation patterns during the micturition cycle. The investigators proposed unique multimodal functional Magnetic Resonance Imaging (fMRI) study that will identify for the first time, structural and functional brain contributions to LUTS in men with BPH and BOO at baseline and following BOO procedures. The investigators hypothesize that men with symptomatic BPH who have persistent LUTS following BOO procedures have a distinct brain activation pattern in Regions of Interest (RoI) that regulate the micturition cycle.
This study assesses brain connectivity and function of individuals ages 13-25 at a prodromal or early stage of a psychotic disorder. Participation involves approximately 3 hours of MRI scanning and up to 6 hours of behavioral testing at Washington University School of Medicine's campus.
This is a cross-sectional pilot study of Alzheimer's disease (AD) brain imaging biomarkers in Diabetes Prevention Program (DPP) outcomes study (DPPOS) participants from the New York City sites (Columbia and Einstein), comparing 10 persons originally randomized to metformin and 10 persons randomized to placebo in DPP. All study procedures will be conducted at Columbia University Irving Medical Center. Eligible participants will receive a PET scans and a brain MRI, which may be conducted in one, two, or three separate visits.
We are trying to understand what causes bipolar disorder and how medications treat bipolar depression. Particularly, we are looking at the importance of inflammation in the process. If you participate, you will have two different brain scans (MRI and PET scan). You will also have an experimental treatment for your depression named N-acetyl cysteine (NAC). The study is funded by the Columbia University Irving Institute to improve the treatment of bipolar disorder. Please contact us if you are interested in participating. Up to $600 in compensation if you are eligible and choose to participate. Up to 6 months of treatment for depression at no cost to you.
This study evaluates the efficacy of auricular neurostimulation via an non-invasive percutaneous electrical nerve field stimulator (PENFS) in adolescents with functional nausea. A neurostimulator is applied to the outer ear and stimulates several nerves that are thought to be involved in transmission of nausea and vomiting signals. Half of the study subjects will receive an active nerve stimulator while the other half will receive an inactive one.
The purpose of this study is to learn about how trauma, posttraumatic stress disorder (PTSD), and mild traumatic brain injury that can occur during deployment affect the brain. The investigators also want to learn how PTSD and mild traumatic brain injury can affect the chance of developing Alzheimer disease later in life. The investigators will study this by using magnetic resonance imaging and positron emission tomography scans to obtain pictures of the brain.
This trial will evaluate a non-invasive brain imaging technique QUTE-CE MRI and validate the method with first-in-human studies.
All participants will be healthy volunteers and all procedures will be completed for research purposes only. Two groups will be recruited, females who use cannabis (marijuana, MJ), and female who do not use cannabis (controls). Female MJ users will be enrolled in a protocol that includes an outpatient drug administration session and a 4-day/3-night inpatient stay on the Johns Hopkins Bayview Clinical Research Unit (CRU). During outpatient visits, MJ users will have an MRI, and complete MJ self-administration and cognitive performance sessions. MJ users will then reside on the CRU,and complete MJ abstinence, and self-report instruments for withdrawal discomfort. A positron emission tomography (PET) scan of brain cannabinoid type 1 receptors will also be completed. Non-users will complete MRI, PET imaging and cognitive testing under an outpatient protocol (no MJ administration).
The purpose of this study is to try to understand how histopcytosis can cause symptoms or problems in the brain. The tests being done in the study will look at memory and thinking as well as brain function via MRI scan.
This is a research study designed to examine how the psychiatric illness called schizophrenia affects brain function and thinking abilities such as attention and memory during simple computer-based tasks, and how measures of brain function are related to performance. The investigators do this by looking at brain activity using electroencephalography (EEG) and magnetic resonance imaging (MRI). The investigators compare participants' results to the activity in their brain as well as clinical measures and questionnaires also completed during this study.
The specific aims of the study are: Primary: To determine the presence and regional distribution of microglial activation, as assessed by Fluorine-18 (18F) labeled "Peripheral Benzodiazepine Receptor 06" (PBR06) -PET, in subjects with active Relapsing Remitting Multiple Sclerosis (RRMS), Secondary Progressive Multiple Sclerosis (SPMS), and Alzheimer's Disease (AD) as compared to healthy controls Secondary: 1. To assess the relationship between microglial activation and clinical variables including disease severity and comorbidities (such as pain, fatigue and/or depression), as well as clinical MRI findings (such as lesions and atrophy) 2. A pilot substudy aims to establish the non-inferiority of \[F-18\]PBR06 as compared with Carbon-11 \[C-11\] labeled "Peripheral Benzodiazepine Receptor 28" (PBR28) PET in patients with RRMS. Hypothesis: The working hypothesis is that there is microglial activation in multiple sclerosis and Alzheimer's disease as compared to healthy controls and that the pattern/ regional distribution of microglial activation is different in Multiple Sclerosis (MS) versus AD and correlates with disease severity and comorbidities. In addition, the investigators hypothesize that \[F-18\]PBR06-PET scans will be at least as good as \[C-11\]PBR28-PET scans, the current gold standard.
This study will estimate how fast two antiepileptic drugs (Levetiracetam and Brivaracetam) enter the human brain. Brain imaging will be used to measure how quickly the radioactive probe \[11C\]UCB-J exits the brain when Levetiracetam or Brivaracetam are given. This will be used to estimate how fast the antiepileptic drugs enter the brain.
The study is designed to evaluate the effects of the proprietary nutritional supplement on cognition, mood, and brain imaging parameters following a relatively short period of treatment.
This exploratory study proposal is the first pilot brain imaging study to determine if Tai Chi can modulate brain resting state functional connectivity (rsFC) and brain morphometry among fibromyalgia (FM) patients and healthy controls.
There is emerging research detailing the relationship between balance/gait/falls and cognition. Imaging studies also suggest a link between structural and functional changes in the frontal lobe (a region commonly associated with cognitive function) and mobility. People with Parkinson's disease have important changes in cognitive function that may impact rehabilitation efficacy. Our underlying hypothesis is that cognitive function and frontal lobe connections with the basal ganglia and brainstem posture/locomotor centers are responsible for postural deficits in people with Parkinson's disease and play a role in rehabilitation efficacy. The purpose of this study is to 1) determine if people with Parkinson's disease can improve mobility and/or cognition after partaking in a cognitively challenging mobility exercise program and 2) determine if cognition and brain circuitry deficits predict responsiveness to exercise rehabilitation. Design: This study is a randomized cross-over controlled intervention to take place at a University Balance Disorders Laboratory. The study participants will be people with Parkinson's disease who meet inclusion criteria for the study. The intervention will be 6 weeks of group exercise (case) and 6 weeks of group education (control). The exercise is a cognitively challenging program based on the Agility Boot Camp for people with PD. The education program is a 6-week program to teach people how to better live with a chronic disease. The primary outcome measure is the MiniBESTest and the secondary outcomes are measures of mobility, cognition and neural imaging. Discussion: The results from this study will further our understanding of the relationship between cognition and mobility with a focus on brain circuitry as it relates to rehabilitation potential.
Chart review of patients who received hyperbaric oxygen therapy for cerebral decompression illness who also underwent SPECT brain blood flow imaging to see if SPECT brain imaging tracks and is consistent with the clinical condition of the patients.
Patients with post-traumatic stress disorder (PTSD) have abnormalities in the function of the amygdala and medial prefrontal cortex (particularly anterior cingulate), in addition to abnormalities of hippocampal volume. In this pilot study we propose to use the combined positron emission tomography/magnetic resonance (PET/MR) scanner and F-18-fluorodeoxyglucose (FDG, an analog of glucose, the most commonly used PET ligand) to examine brain function and directly correlate the data with the intrinsic functional connectivity of brain circuits that are responsible for social, emotional and cognitive processing in both individuals with PTSD and group-matched trauma controls (TC) and healthy controls (HC). Once the machine is validated, we will then use a more specific biomarker to better understand the neurochemical factors that contribute to individual differences in PTSD. Thus, the data obtained from this pilot study will guide our future molecular imaging studies. The link between general brain function, specific molecular target and the intrinsic functional connectivity of brain circuits that are responsible for social, emotional and cognitive processing in PTSD, TC and HC will be explored.