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Title:
MAGNETIC RESONANCE IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/021024
Kind Code:
A1
Abstract:
In order to reduce vibration resulting from applying a gradient magnetic field pulse, a gradient magnetic field coil is supported by a static magnetic field generating device. At a prescribed timing, a control unit causes a gradient magnetic field coil to generate a gradient magnetic field pulse of a prescribed waveform, and implements a prescribed imaging pulse sequence which includes the gradient magnetic field pulse. The control unit has a waveform determination unit which determines the waveform of the gradient magnetic field pulse, and the waveform determination unit determines the waveform of the gradient magnetic field pulse so as to decrease the vibration propagation ratio in a propagation path which includes the support unit of the gradient magnetic field coil and the table, in order to prevent that the force generated in the gradient magnetic field coil when passing a current through the gradient magnetic field coil is transmitted over the propagation path to the subject, which would result in fluctuation in the subject's position.

Inventors:
HANADA HIKARU (JP)
Application Number:
PCT/JP2017/025373
Publication Date:
February 01, 2018
Filing Date:
July 12, 2017
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
A61B5/055
Foreign References:
JP2014161357A2014-09-08
JP2000232966A2000-08-29
JP2014212891A2014-11-17
JP2015000165A2015-01-05
US7239140B12007-07-03
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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