imaging

A new technique is letting scientists peer into the brain’s wiring with greater detail by simply using a microscope and an LED light, an accessible and cost-effective method that may be useful for studying brain damage in neurological diseases such as multiple sclerosis (MS). The method, called Computational Scattered…

A new positron emission tomography (PET) tracer may help determine the extent of nerve fiber loss in multiple sclerosis (MS) lesions, something that can’t be identified with conventional MRI imaging, according to a new study. Researchers think the new imaging tech could help track the efficacy of experimental therapies…

A non-invasive scan that measures network activity across the brain was able to predict the outcomes of behavioral therapies designed to improve cognitive function in people with multiple sclerosis (MS), a study demonstrates. Brain network function, as assessed by the test, called magnetoencephalography (MEG), “could play an important role…

A new imaging technique called magnetic resonance spectroscopic imaging, or MRSI, could be useful for diagnosing and monitoring multiple sclerosis (MS), according to a small study. “If confirmed in longitudinal clinical studies, this new neuroimaging technique could become a standard imaging tool for initial diagnosis, for disease progression and…

An imaging feature called a rim lesion is found in about 4 out of every 10 people with multiple sclerosis (MS), according to a review study. These rims, thought to represent areas of chronic brain inflammation in which myelin is being progressively damaged, may serve as alternate biomarkers of…

Subtle changes in structure in the hippocampus — a region of the brain involved in processing memories — can differentiate between relapsing-remitting and primary progressive multiple sclerosis, according to a new study. The study, “Unraveling the MRI-Based Microstructural Signatures Behind Primary Progressive and Relapsing–Remitting Multiple Sclerosis Phenotypes,”…

Inflammation drives the loss of brain volume and thinning of the eye’s retina in the first five years of a multiple sclerosis (MS) diagnosis, an imaging study demonstrates.  The findings support a therapeutic strategy of halting inflammatory activity during this initial period. …

JuneBrain, a startup company that is developing a wearable head imaging device that enables multiple sclerosis (MS) patients to remotely monitor their disease activity and treatment response, has received a $50,000 investment through TEDCO’s Builder Fund, the investor announced. MS is caused by inflammation in the…

Treatment for two months with N-acetylcysteine, or NAC — a natural molecule that enhances the levels of antioxidants — significantly improved metabolic activity in certain brain regions among people with multiple sclerosis (MS), a small clinical study reports. This increase in metabolic activity was accompanied by improvements…

Myelin is the protective sheath that covers nerve fibers and is damaged in those with multiple sclerosis. Quantifying the degenerative process of myelin would lend perspective to how much and where a patient is progressing. Currently, MRIs are used for diagnostic purposes, but the nuances of progression remain difficult…

The U.S. Food and Drug Administration (FDA) has agreed to allow Myeliviz, an imaging agent of myelin — the protective layer that covers nerve fibers and is damaged in multiple sclerosis (MS) — to be evaluated in a clinical trial with healthy volunteers. Myeliviz, created by Case Western Reserve University researchers, has the potential…

A grant awarded recently by the National Institutes of Health (NIH) will fund research to explore how brain changes in multiple sclerosis (MS) patients affect mobility. The five-year grant (1R01NS109023-01A1), totaling $3.5 million, was awarded by the National Institute of Neurological Disorders and Stroke, part of…

The volume of atrophied (shrunken) regions in the brain, as visible through magnetic resonance imaging (MRI) scans, can predict disease progression in people with multiple sclerosis (MS), new research reveals. The finding was published in the journal Radiology in an article titled, “Atrophied Brain T2 Lesion Volume…

Imaging techniques that measure damage to the brain, in addition to those that detect lesions, may be useful in predicting likely disease progression in people with clinically isolated syndrome (CIS), a study found. The study, “Early imaging predictors of longer term multiple sclerosis risk and severity…

As part of National Dysphagia Awareness Month this June, Bracco Diagnostics is acknowledging speech language pathologists for their support in developing Varibar (barium sulfate) products — imaging agents used to assess swallowing disorders, a problem common among multiple sclerosis (MS) patients. One in 25 adults is estimated to experience dysphagia, or…

A new artificial intelligence (AI)-based model is better than conventional methods for detecting brain changes in response to treatment with Tysabri (natalizumab) in patients with relapsing-remitting multiple sclerosis (RRMS), a study reports. The study, “High-dimensional detection of imaging response to treatment in multiple sclerosis,” was published in…

The evaluation of disease progression in multiple sclerosis (MS) patients through magnetic resonance imaging (MRI) can be performed without the use of a contrast agent, new research has shown. These findings suggest that routine use of contrast-enhanced MRI is unnecessary for most follow-ups with MS patients, reducing both imaging…

The rate of spinal cord tissue loss is a strong indicator of conversion from relapsing-remitting multiple sclerosis (RRMS) to secondary progressive MS (SPMS), according to a finding presented at the fourth annual Americas Committee for Treatment and Research in Multiple Sclerosis (ACTRIMS) Forum 2019. The forum…

In mapping the immune system of the brain in mice and humans, scientists in Germany found that microglia — a type of nerve cell located in the central nervous system and responsible for supporting and protecting neurons — share the same core design, but behave differently depending on the specific function each…

A radioactive probe that might enable imaging tools to effectively monitor what a gene therapy is doing in the brain — important in treating diseases like multiple sclerosis with such a therapy — has been developed at Stanford University. The probe is a kind of radiotracer used successfully in this study…

A new fluorescent imaging strategy allows researchers to track T-cells and further understand their dynamics in vivo, giving them insight into what happens when these immune cells attack myelin in a mouse model of multiple sclerosis (MS). The new technology was reported in the study, “A timer for…

Professor Frederik Barkhof, MD, PhD, has won the 2018 John Dystel Prize for Multiple Sclerosis Research for pioneering the use of magnetic resonance imaging (MRI) to improve multiple sclerosis (MS) diagnosis and understanding of the disease. The prize, decided by a peer committee, is awarded annually by…

A novel imaging approach enables assessment of key nervous system deterioration in multiple sclerosis (MS), a new study in mice suggests. The research, “Development of a PET radioligand for potassium channels to image CNS demyelination,” was published in the journal Scientific Reports. MS is characterized by damage to myelin (a process called demyelination), which is an insulating sheath around axons (the long projections of neurons) that enables effective neuronal communication. As a result, patients experience a variety of symptoms, including muscle stiffness and weakness, fatigue and pain. Although existing MS medications suppress immune responses and reduce flare-ups, none can cure the disease. Despite the importance of demyelination in MS, scientists and clinicians do not currently have a way to directly image myelin damage. Magnetic resonance imaging (MRI) is used, but it does not enable the distinction between demyelination and inflammation, which are common in patients with MS. Upon myelin damage, voltage-gated potassium channels (cellular membrane proteins) become exposed. As a result, cells leak potassium, which impairs proper neuronal communication. This prompted researchers to develop a tracer that targets potassium channels. "In healthy myelinated neurons, potassium channels are usually buried underneath the myelin sheath," Brian Popko, PhD, the study’s senior author, said in a press release. Popko is a professor of neurological disorders and director of the Center for Peripheral Neuropathy at The University of Chicago. Exposed potassium channels can be targeted by the MS medication 4-aminopyridine (4-AP; dalfampridine), which partially repairs nerve conduction and mitigates MS symptoms. Using mouse models of MS, the researchers demonstrated that 4-AP binding to potassium channels is greater in demyelinated axons in comparison with well-myelinated axons. The greater binding of 4-AP led to its accumulation in damaged axons. Then, the team evaluated several fluorine-containing derivatives of 4-AP, and found that the most effective in binding to potassium channels was 3-fluoro-4-aminopyridine (3F4AP), which can be labeled with radioactive 18F. This labeling enables detection of demyelinated regions with a novel strategy based in positron emission tomography (PET). "3F4AP is the first tracer whose signal increases with demyelination, potentially solving some of the problems of its predecessors," said Pedro Brugarolas, PhD, first author of the study. Existing PET tracers bind to myelin. This translates to decreases in signal in the presence of myelin loss, “which can be problematic for imaging small lesions” Brugarolas noted. Importantly, the findings in mice were confirmed in monkeys. Experiments showed that the radiolabeled 3F4AP enters the primate brain and accumulates in areas with less myelin. Collectively, “these data indicate that [18F]3-F-4-AP may be a valuable PET tracer for detecting [central nervous system] demyelination noninvasively,” the team wrote. "We think that this PET approach can provide complementary information to MRI which can help us follow MS lesions over time," Popko said. The novel PET strategy enables the evaluation of therapies to repair myelination and also could help assess how much myelin loss is involved in other neurological disorders, such as traumatic brain injury and spinal cord injury, but also in diseases not commonly linked to demyelination, "such as brain ischemia, psychiatric disorders, and neurodegenerative diseases, including Alzheimer's," Popko concluded.

An international panel of multiple sclerosis (MS) experts has proposed revising the McDonald criteria guidelines to improve and expedite the diagnosis of this disease. Co-chaired by Dr. Jeffrey Cohen of the Cleveland Clinic and Dr. Alan Thompson of the University College London, the 30-member panel reviewed newly available research…

A clinical trial of a smartphone app that helps multiple sclerosis (MS) understand and manage their disease — and to aid and speed research — is now recruiting people nationwide. Claimed to be the first of its kind, the app, called myMS, is designed to give MS patients quick and easy access to pertinent information, from clinical evaluations…

Royal Philips recently announced the introduction of the IntelliSpace Portal 9.0, the latest edition of its advanced comprehensive visual analysis and quantification platform for neurological disorders. The platform was presented at the 2016 Radiological Society of North America Annual Meeting (RSNA), taking place through Dec. 2 in Chicago. Currently a work in…

Dr. Daniel Reich, a researcher with the National Institutes of Health (NIH),  has been recognized for his pioneering work on brain imaging to advance both the treatment of people with multiple sclerosis (MS) and scientific understanding of the disease. Reich, a neurologist, neuro-radiologist and neuroscientist, was awarded the 2016 Barancik Prize for Innovation in MS…

Two presentations at the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) 2016 Congress, now underway in London, underscored the value of measures of neurodegeneration in the eye in predicting a patient’s future disability. Peter Calabresi with the Johns Hopkins School of Medicine opened the session with the presentation, “Tools for…

Genes that encode what are called “complement” immune factors are linked to the breakdown of the retina in multiple sclerosis (MS) patients — a measure that, in turn, predicts brain damage and loss of eyesight. The study, a joint effort between researchers from Johns Hopkins School of Medicine,…

The 37th annual congress of The European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) will take place in London between 14 – 17 September 2016.