Kalaiarasi

  Magnetic resonance imaging  (MRI) is arguably the most sophisticated imaging method used in clinical medicine. In recent years, MRI scans have become increasingly common, as costs decrease. In this article, we will outline the basic principles behind MRI scans, how to orientate and interpret a scan, and address some of their advantages and disadvantages compared to other imaging modalities. Basic Principles MRI scans work as an imaging method due to the unique make-up of the human body. We are comprised entirely of cells which all contain water – principally made of  hydrogen ions  (H 2 O). The magnet embedded within the MRI scanner can act on these positively charged hydrogen ions (H +  ions) and cause them to  ‘spin’  in an identical manner. By varying the strength and direction of this magnetic field, we can change the direction of ‘spin’ of the protons, enabling us to build layers of detail. When the magnet is switched off, the protons ...

Ferrocene  https://drive.google.com/file/d/13iq818NEHyqGpyit0CrnUXQo4Lyf5cTK/view?usp=sharing