Magnetic resonance imaging system with satellite gradient coils
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United States of America Patent
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Sep 6, 2016
Grant Date -
Sep 22, 2011
app pub date -
Dec 2, 2009
filing date -
Dec 4, 2008
priority date (Note) -
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Abstract
The present invention relates to a magnetic resonance imaging system comprising a main magnet (102), the main magnet (102) comprising a magnet bore, the bore having a longitudinal axis (118) parallel to the main magnetic field of the main magnet (102), the magnet bore comprising a gradient coil system, wherein the gradient coil system comprises a first (108) satellite coil and an inner coil (114), wherein the first satellite coil comprises at least one pair of saddle coils (200; 202; 204; 206) arranged oppositely over the magnet bore and wherein the inner coil (114) comprises at least two pairs of saddle coils (208) arranged oppositely over the magnet bore, wherein the inner coil (114) is located at a larger diameter from the central axis (118) than the first (108) satellite coil, wherein the first satellite coil and the inner coil form a stepped coil structure.
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