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Magnetic resonance imaging apparatus and noise reduction method
专利权人:
株式会社日立製作所
发明人:
倉谷 厚志
申请号:
JP2015558816
公开号:
JP6419730B2
申请日:
2015.01.15
申请国别(地区):
JP
年份:
2018
代理人:
摘要:
To supply a magnetic resonance imaging (MRI) apparatus capable of shifting a high frequency of noise into a low frequency during measurement, the magnetic resonance imaging apparatus includes: a gradient magnetic field device (9, 10) that applies a pulse-shaped gradient magnetic field to an object placed in a static magnetic field; and a measurement control unit (4) that drives the gradient magnetic field device by a gradient magnetic field pulse and measures magnetic resonance image data. The measurement control unit performs noise suppression control to shift a frequency of noise generated by the gradient magnetic field device to a low frequency side by changing a waveform of the gradient magnetic field pulse during repetition of the gradient magnetic field pulses at a constant period.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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