Magnetic resonance imaging apparatus and SAR estimation method
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United States of America Patent
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Dec 6, 2016
Grant Date -
Sep 6, 2012
app pub date -
Nov 25, 2010
filing date -
Nov 27, 2009
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Abstract
In order to further improve the accuracy of SAR estimation by accurately estimating, for each object, the energy of RF pulses absorbed into a part of an object, for example, a head, on the basis of measurement performed before main imaging, a nuclear magnetic resonance imaging apparatus estimates a head SAR by calculating a signal Sh generated from the head and a signal Sb generated from the whole object, calculating the ratio α between the signal generated from the head and the signal generated from the whole object, and calculating the energy Eh absorbed into the head using the ratio of the signals.
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