Method for imaging of movement of material
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United States of America Patent
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Jan 7, 1997
Grant Date -
N/A
app pub date -
Nov 30, 1993
filing date -
Dec 1, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for examination of motion of material employing magnetic resonance imaging methods. A magnetic field, which is referred as an auxiliary field is applied over the first area of the object, this auxiliary field is arranged to get smaller as one moves from the first area to the second area, referred as the area to be examined. Partially simultaneously with the auxiliary field a radio frequency pulse, AHP-pulse, is applied on the object, the frequency of the AHP-pulse is the Larmor-frequency corresponding to the strength of the magnetic field in the area to be examined. The length of the AHP-pulse corresponds to the time, which is required for the material to move from the first area to the area to be examined.
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