NMR angiography system and method with immunity to inhomogeneity
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United States of America Patent
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Oct 18, 1988
Grant Date -
N/A
app pub date -
Aug 6, 1986
filing date -
Aug 6, 1986
priority date (Note) -
Expired
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Abstract
A two-dimensional projection image of the NMR activity within a volume is obtained. The signals due to static material are not excited and do not appear in the projection image. The signals due to moving blood in vessels produce an isolated image of the vessels with the superimposed structure removed. Excitation systems are used which excite only moving material and return static material to equilibrium. A 180.degree. excitation provides immunity to inhomogeneity.
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