Nuclear magnetic resonance imaging method
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United States of America Patent
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Aug 19, 1986
Grant Date -
N/A
app pub date -
Aug 4, 1983
filing date -
Aug 13, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of deriving three dimensional image information from an object using nuclear magnetic resonance signals is described. The method comprises subjecting the object to a continuous, static magnetic field and carrying out the following set of sequential steps. 1. Exciting nuclear spins in a volume; 2. applying non-aligned first, second and third gradients of the magnetic field; 3. causing the spins to rephase periodically in the presence of the first gradient; 4. phase encoding the spins in the direction of the second gradient prior to every read-out of the rephased FIS from the object; and then successively repeating the above set of steps with different values of gradient of the third gradient (G.sub.z.sup.(2)), there being a recovery interval between the repetition of successive sets of steps.
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