Magnetic resonance diagnosis apparatus, noise spatial distribution generating method, and signal acquisition method
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jul 30, 2009
app pub date -
Jan 26, 2009
filing date -
Jan 28, 2008
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Abstract
A magnetic resonance diagnosis apparatus includes a coil assembly including a high-frequency coil, a transmission unit which excites magnetization of a specific atomic nucleus of an object via the high-frequency coil, a reception unit including a detection unit for receiving a magnetic resonance signal via the high-frequency coil, a low-pass filter, and an analog/digital converter, a control unit which sets a passband of the low-pass filter to not less than three odd multiple of a frequency band determined from an imaging field of view, and sets a sampling frequency of the analog/digital converter to an oversampling frequency exceeding a signal band of the magnetic resonance signal, a noise spatial distribution generating unit which generates a noise spatial distribution on the basis of an output from the reception unit.
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