NEUROIMAGING

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  • neuroimaging
    • structual
      • Computerised Tomography
        • pros
          • non invasive, useful for locating brain injures & abnormalities
        • cons
          • XRAYS emit radiation, black and white only show structure, not function
        • prodcues a high resoultion 3-D  computer image of the brain. contrast idoine to highlight blodd vessels, xrays "slices", detects tumpurs, brolken bone etc
      • Magnetic Resonance Imaging
        • pros
          • clear pictures, non invasive, no radiation
        • cons
          • EXPENSIVE, can't be used by people with metal implants; pace makers, articals hips etc
        • uses magnetic fields and radio waves to produce a computer-enhanced image of the brain structure, provides a highly detailed image
    • functional
      • Position Emission Tomography
        • pros
          • shows function. red = high, blue = low
        • cons
          • PET is less detailed than an MRI, requires an injection of a radioactive trace
        • injected with a radioactive isotope, mainly measures functional  changes, increased blood flow & glucose consumption for "busy" parts of the brain
      • Functional Magnetic Resonance Imaging
        • pros
          • no injections, allows for a combo of functional & structural
        • cons
          • process time can be consuming to collect images
        • measure oxygen consumption across the brain, this technique uses the fact that blood is more oxygenated

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