brain imaging

Microscopic connections between brain cells vary based on biological sex, according to a new study that used machine learning to analyze MRI data from hundreds of healthy volunteers. Researchers said the findings may help explain why neurological disorders such as multiple sclerosis (MS) frequently vary according to sex. “Our…

Researchers were able to image the cerebellum — a small, compact region of the brain that plays key roles in multiple sclerosis (MS) and other diseases — with greater clarity than ever before. Their imaging approach, which used MRI scanners equipped with powerful magnets, may help learn how…

Being a lifelong musician can help protect certain tracts of the brain’s white matter from damage during aging, potentially warding off conditions such as multiple sclerosis, Parkinson’s disease, or dementia for years. That’s according to the study “Effects of Lifelong Musicianship on White Matter Integrity…

  Detecting changes to the brain’s central vein using common magnetic resonance imaging (MRI) scans is a useful and accurate strategy to enhance diagnosis of multiple sclerosis (MS), a new study shows. Analysis of more than 4,000 brain lesions, obtained from contrast-enhanced MRI scans collected from eight neuroimaging European…

Aerobic exercise strengthens brain connections in people with relapsing-remitting multiple sclerosis, Jan-Patrick Stellmann, with University Medical Center Hamburg-Eppendorf in Germany, reported at the 7th Joint ECTRIMS-ACTRIMS Meeting in Paris that ran from Oct. 25–28. According to Stellmann, "aerobic exercises are considered to improve mobility, fatigue, depression and cognition in MS," and also to "promote neuroprotective or neuroregenerative mechanisms." For the study, the team used MRI to examine how exercise affected different types of brain connections. They recruited 57 RRMS patients and 30 healthy controls to the study. Women made up more than two-thirds of the patient group, which had a mean age of 39. Patients only had mild disability, with a mean score of 1.5 on the Expanded Disability Status Scale. Researchers randomly assigned about half the group to a supervised and individually adapted aerobic exercise program, consisting of 22 sessions of up to one hour each. Others were assigned to a waiting list — with the intent of taking up exercise after three months — and served as a control group. MRI scans at the study's beginning revealed that patients had more so-called functional connections, but fewer structural ones, than healthy controls. It is known from earlier studies that most RRMS patients show abnormalities in functional connections, but some researchers find increases while others decreases in these connections. Functional and structural connections appear on different types of MRI scans — ones that make use either of blood flow changes or of the properties of water molecules in the white matter of the brain. The deviations were particularly pronounced in highly connected hub regions, the researchers said. After three months, functional connections increased across the entire brain among exercising patients, but decreased in those on the waiting list. Structural connections also increased among patients who exercised, while no change was detected among control patients. Researchers also noted that exercising patients grew more local connections, mostly in hub regions, compared to those who did not exercise. While it is generally accepted that aerobic exercise promotes neuroprotective and regenerative processes within the brain, the study demonstrated that exercise, in only three months, did indeed affect how the brain is wired. "Short-term aerobic exercise increases functional and structural connectivity," Stellmann concluded. "Already after three months, exercise lead to functional and structural reorganization of brain networks." The researcher highlighted the difficulties in obtaining financial support for trials on exercise. And he emphasized that patients should be encouraged by their doctors to exercise regularly.

How multiple sclerosis affects the “social brain,” which governs the ability to understand how others think and feel — a skill called social cognition — is linked to specific types of brain damage that occur in MS: both lesions and microscopic changes taking place in the brain’s white matter, a research team…

Advances in brain imaging are making it possible to visualize early and ongoing events in multiple sclerosis (MS) — beginning with the first signs of inflammation caused by immune cells entering the brain. Should the new technique become available to physicians, it likely will not only allow for more precise diagnoses, but…

The National Multiple Sclerosis Society has awarded Dr. Bart Rypma, an associate professor at the Center for BrainHealth at the University of Texas at Dallas, a more than $490,000 grant to study how changes in blood flow in the brain might affect cognition in people with multiple sclerosis (MS). The grant builds on previous research…

A recent study published in the journal PLOS ONE described a new technique with the potential to spot brain changes in multiple sclerosis (MS) before the onset of symptoms. The technique, which measures brain dynamic activity and brain entropy, may lead to the development of diagnostic — and possibly prognostic —…

Magnetic resonance imaging (MRI) can predict responses to depression treatment in patients with multiple sclerosis (MS), according to Anthony Feinstein, Professor at the Department of Psychiatry of the Sunnybrook Health Sciences Centre & the University of Toronto. In the presentation “Depression in MS: Is brain imaging helpful?” at this…