磁場分布測定方法、磁場分布測定用治具、磁石装置及び磁気共鳴撮像装置
- 专利权人:
- 株式会社日立メディコ
- 发明人:
- 安藤 竜弥,星野 伸
- 申请号：
- JP2009214099
- 公开号：
- JP5291583B2
- 申请日:
- 2009.09.16
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide a magnetic field distribution measuring method obtaining highly precise uniformity of the magnetic field space even when the magnetic field space is measured at few measuring points of M1-M4 on the surface.
SOLUTION: In a method for measuring a magnetic field distribution in a magnetic field space by a magnetic device, the magnetic device includes a magnetic field generating source for generating a magnetic field in a magnetic field space and a magnetic field uniformity adjusting device wherein a plurality of magnetic materials are nonuniformly mounted to improve the uniformity of the magnetic field in the magnetic field space, and the position where the magnetic materials are mounted in the magnetic field unifromity adjusting device is changed while the magnetic materials obtain the magnetic field distribution formed on the surface of the magnetic field space, and the function of half width at half maximum d&theta of the magnetic field distribution to the peak position &theta of the magnetic field distribution is installed, and a plurality of measuring points M1-M4 for measuring the magnetic field mounted on the surface of the magnetic field space have distances d&thetaa, d&thetab, d&thetac, and the sizes of distances d&thetaa, d&thetab, d&thetac are changed by the positions of measuring points M1-M4 in order to be below the half width of half maximum d&theta introduced by the function from the peak position &theta accorded with the positions of measuring points M1-M4.
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- 来源网站：
- 中国工程科技知识中心
