发明名称 |
METHOD AND APPARATUS FOR ALIGNING A MAGNETIC FIELD MODIFYING STRUCTURE IN A MAGNETIC RESONANCE IMAGING SCANNER |
摘要 |
In a method for aligning a magnetic field-modifying structure (74) in a magnet bore (12) of a magnetic resonance imaging scanner (8), a reference magnetic field map of the magnet bore (12) is measured without the magnetic field-modifying structure (74) inserted. The magnetic field-modifying structure (74) is inserted into the magnet bore (12). A second magnetic field map of the magnetic bore (12) is measured with the magnetic field-modifying structure (74) inserted. At least one odd harmonic component of the first and second magnetic field maps is extracted. The magnetic field-modifying structure (74) is aligned in the magnet bore (12) based on a comparison of the odd harmonic component of the first and second magnetic field maps.
|
申请公布号 |
US2004070396(A1) |
申请公布日期 |
2004.04.15 |
申请号 |
US20020271136 |
申请日期 |
2002.10.15 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DEMEESTER GORDON D.;MORICH MICHAEL A.;MCGINLEY JOHN V.M.;MULDER GERARDUS B.J. |
分类号 |
G01R33/3873;(IPC1-7):G01V3/00 |
主分类号 |
G01R33/3873 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|