磁気共鳴イメージング装置
- 专利权人:
- 国立大学法人九州大学
- 发明人:
- 高橋 哲彦,内海 英雄
- 申请号：
- JP2006148333
- 公开号：
- JP4890945B2
- 申请日:
- 2006.05.29
- 申请国别(地区):
- JP
- 年份:
- 2012
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide an MRI device capable of acquiring a stable MRI image even if the influence of an external magnetic field varies, when a plurality of types of NMR signals are acquired alternately.
SOLUTION: The MRI device has a shim section for correcting the distribution of a static magnetic field of an imaging space with a selected correction amount, of two or more types of predetermined static magnetic field distribution amounts. A control section, while repeatedly acquiring nuclear magnetic resonance signals about a plurality of matters in a specimen sequentially according to an imaging pulse sequence, selects a static magnetic field distribution correction amount by outputting a signal to the shim section at a predetermined timing corresponding to the imaging pulse sequence, and repeatedly makes the static magnetic field distribution corrected sequentially with the two or more types of predetermined static magnetic field distribution correction amounts. Thus, when the NMR signals of a plurality of types of materials are acquired sequentially and repeatedly, the static magnetic field distribution can be corrected even if it is varied by the external magnetic field.
COPYRIGHT: (C)2008,JPO&INPIT
- 来源网站：
- 中国工程科技知识中心
