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    • New MRI technique may...

    New MRI technique may predict small vessel disease related cognition decline

    Written by Hina Zahid Published On 2019-09-13T19:30:40+05:30  |  Updated On 13 Sept 2019 7:30 PM IST
    New MRI technique may predict small vessel disease related cognition decline
    New MRI technique may predict small vessel disease related cognition decline and dementia.

    The Researchers at the University of London, in the United Kingdom have found that MRI brain technique using diffusion tensor imaging may predict stroke-related dementia. The advanced Magnetic Resonance Imaging (MRI) brain scan analysis in patients with stroke-related, small vessel disease helped predict problems with thinking, memory and even dementia. The new research has been published in the Journal Stroke, a journal of the American Stroke Association.


    "We have developed a useful tool for monitoring patients at risk of developing dementia and could target those who need early treatment," said senior author Rebecca A. Charlton, Ph.D., department of psychology at Goldsmiths, University of London, in the United Kingdom.


    Small vessel disease occurs when a stroke or other disease damages tiny blood vessels in the brain. This condition is the most common cause of thinking problems including planning, organizing information and processing speed and can even lead to dementia and no effective test is available to identify them.


    This study evaluated the accuracy of a new Magnetic Resonance Imaging analysis technique using diffusion tensor imaging (DTI), in predicting thinking problems and dementia related to small vessel disease. A single scan measured the brain in fine detail to reveal damaged areas. By comparing these images to a healthy person's, researchers were able to classify the brain into areas of healthy versus damaged tissue.


    Results showed that participants with the most brain damage were much more likely to develop thinking problems. The analysis also helped predict the three-fourths of the dementia cases that occurred during the study.


    The study included 99 patients with small vessel disease caused by ischemic stroke, a type of stroke that blocks the blood vessels deep within the brain. Slightly more than one-third were female, average age 68, and most were Caucasian. All participants were enrolled in the St George's Cognition and Neuroimaging in Stroke (SCANS) study from 2007 to 2015 in London.


    Participants received the Magnetic Resonance Imaging scans annually for three years and thinking tests annually for five years. Eighteen participants developed dementia during the study, with an average time to onset of approximately three years and four months.


    This advanced MRI analysis offers a highly accurate and sensitive marker of small vessel disease severity in a single measure that can be used to detect who will and will not go on the develop dementia in a five-year period, noted Charlton.


    The healthy brain scans used for comparison were from one individual and may not represent the true range of all healthy brains. In addition, the study's relatively small number of participants all had small vessel disease resulting from one type of stroke, so the results may not apply to people with different forms of the disease.




    American Heart Associationbrain scandementiadiffusion tensor imagingischemic strokemagnetic resonance imagingMRIRebecca A Charltonsmall vessel diseasestroke
    Source : www.ahajournals

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    Hina Zahid
    Hina Zahid
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