• 10

    SOURCE

    Researchers and engineers keep improving the machines that help doctors better understand and diagnose conditions that affect our brains. One of the goals is to find causes of Alzheimer’s and Parkinson’s disease, which affect millions of people throughout the world.

    Since the 1980s, doctors have used Magnetic Resonance Imaging machines, or MRI scanners, to look into patients’ bodies without exposing them to the harmful effects of X-rays.

    An alternating magnetic field created inside the MRI’s tube excites hydrogen atoms in the body’s tissues, making them emit radio waves. Those waves can be turned into pictures, similar to X-ray images.

    The magnet of a new MRI, built by Siemens, has 7 tesla units, making it more than 100,000 (7/0.000065 = 107,692) times more powerful than the earth’s magnetic field.

    “Using something like 7-tesla imaging, you can do very high resolution imaging, you can get the contrast that you need in order to identify the particular sub-parts of the nuclei that you need,” said Peter Jezzard, a professor of neuroimaging.

    But even high-resolution two-dimensional black-and-white pictures are quite different from three-dimensional color renditions that can be viewed from all angles.

    Using MRI-generated images of water molecules moving within the brain’s white matter, scientists at the British company Holoxica created a hologram showing the connections between neurons.

    “The brain is such a complex three-dimensional structure, and sometimes it is quite difficult to describe, or understand, the actual connections,” said neurosurgeon Basil Ridha. “So to see it in 3-D, that may be a short cut to education, and it can reinforce the learning process.”

    The holographic display is still in prototype phase, but researchers say, once ready for production, it will be compatible not only with MRI machines but also with CT and ultrasound scanners.

     
     

    No comments

    Be the first one to leave a comment.

    Post a Comment


     

     

    Latest Posts

    Latest Video

     
     

    LATEST POSTS

    Nanoarray sniffs out and distinguishes multiple diseases

    SOURCE “Diagnosis and Classification of 17 Diseases from 1404 Subjects via Pattern Analysis of Exhaled Molecules” ACS Nano Before modern…

    Cardiac stem cell infusion could be effective therapy for the most common type of heart failure

    SOURCE Cardiac stem cells could be an effective treatment for a common but difficult-to-treat type of heart failure, a new…

    Outer layer of human heart regrown using stem cells

    Human stem cells have been used to regenerate the cells that cover the external surface of a human heart(Credit: DarioStudios/Depositphotos) SOURCE…

    Gastrogenomic delights: A movable feast

    SOURCE The complete genome sequences of Escherichia coli and Helicobacter pylori provide insights into the biology of these species Recently,…

    Glaucoma gene therapy on positive trajectory using CRISPR-Cas9

    SOURCE May 02, 2016 Seattle—Results from a series of preclinical studies are providing proof of principle that gene targeting using…

    Mark Bertolini: The new definition of Quality in Healthcare is Convenience

      “… in studying the healthcare system we know one thing: the cheapest place to provide care is in the…

    Gentle Bot: 3D printing a robot with feelings

      3D printing is enabling strong advances in the field of soft robotics. New research from Cornell University has created robotic hands…

    Multiregional brain on a chip

     SOURCE (Nanowerk News) Harvard University researchers have developed a multiregional brain-on-a-chip that models the connectivity between three distinct regions of…