Method for determining flowing matter by means of NMR tomography
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United States of America Patent
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Nov 8, 1988
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N/A
app pub date -
Feb 19, 1987
filing date -
Feb 25, 1986
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Expired
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Abstract
NMR tomography permits identification of flowing matter within a closed body, as there is a reduction in signal intensity as a consequence of a saturation of the magnetization in the area of a slice that has been excited for imaging, while freshly inflowing matter has not experienced this saturation and consequently provides a stronger signal. Special excitation sequences permit either virtually complete saturation of stationary tissue, and thus particularly strong emphasis of flowing matter, or excitation of stationary and flowing matter in different zones and with differing intensities, thereby enabling very precise quantitative and even directional flow measurements to be performed.
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