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    could someone explain how resonance is used in MRI scans please? the book says it uses resonance but doesnt actualy explain how!

    thanks
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    The radio waves that are sent into the sample placed in the magnetic field, are of the resonance frequency (also called teh lamour frequency) of the hydrogen nuclei, this forces some of them to achieve the higher energy state ("flip")
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    wat board is this?
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    (Original post by mackin boi)
    wat board is this?
    looks like OCR forces fields and energy or OCR Health Physics to me.
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    its OCR health physics, i did it in january
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    im doin FFE it just mentions it in the book n i think u have to know it as an example of use of resonance
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    MRI uses the frequency that matches the natural frequency of the Hydrogen atom to excite it to higher energy state. And they will align to the magnetic field (or sth) When the scanner is turned off, the excited hydrogen atom will re-radiate out the excess energy in the form of radiation (scanners picks it up) to fall back to it's original level.
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    (Original post by sarah12345)
    im doin FFE it just mentions it in the book n i think u have to know it as an example of use of resonance
    Why choose the hardest example?
    Talk about microwaves to cook food, or tv signals, much easier to remember
 
 
 
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