磁気共鳴イメージング装置

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专利权人:

株式会社日立メディコ

发明人:

空 静江,熊井 秀樹

申请号：

JP2008000398

公开号：

JP5177379B2

申请日:

2008.01.07

申请国别(地区):

JP

年份:

2013

代理人:

摘要：

PROBLEM TO BE SOLVED: To provide an MRI capable of measuring magnetic field distortion, including cross terms, which is generated by eddy current arising by a gradient magnetic field.

SOLUTION: An eddy current magnetic field measuring means measures not only an eddy current magnetic field arising in the direction where the gradient magnetic field is applied but also at least one eddy magnetic field arising in the two directions orthogonal to the application direction, among a first, second, and third directions. For example, after a test gradient magnetic field is applied to an object in the prescribed direction among the first, second, and third directions, a nuclear magnetic resonance signal is acquired to reconfigure a phase image showing a phase change arising in the object by the test gradient magnetic field. By acquiring phase change amounts in the first, second, and third directions on the phase image, respectively, the eddy current magnetic field is measured.

COPYRIGHT: (C)2009,JPO&INPIT

来源网站：

中国工程科技知识中心

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