发明授权
- 专利标题: Conjugate symmetry magnetic resonance imaging
- 专利标题(中): 共轭对称磁共振成像
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申请号: US85956申请日: 1987-08-14
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公开(公告)号: US4780675A公开(公告)日: 1988-10-25
- 发明人: Gordon D. DeMeester , John L. Patrick , G. Neil Holland
- 申请人: Gordon D. DeMeester , John L. Patrick , G. Neil Holland
- 申请人地址: OH Highland Hts.
- 专利权人: Picker International, Inc.
- 当前专利权人: Picker International, Inc.
- 当前专利权人地址: OH Highland Hts.
- 主分类号: G01R33/54
- IPC分类号: G01R33/54 ; A61B5/055 ; A61B10/00 ; G01R33/44 ; G01R33/48 ; G01R33/561 ; G01R33/20
摘要:
An incomplete set of magnetic resonance image data is collected and stored in a view memory (40). The incomplete set of image data includes a central or first set of data values (42, 42') and a side or second set of data values (44, 44'). The central data set is operated on by a roll-off filter (64) and a Fourier transform (66) to create a normalized phase map (72). The first and second data sets are Fourier transformed (82) and phase corrected (86) by being multiplied with a complex conjugate (88) of the corresponding phase map data value. A third data set (46, 46') is generated (90) by determining the complex conjugate of the second or side data set. The third data set is Fourier transformed (94) and multiplied (98) by a corresponding value from the phase map to produce a second phase corrected image representation. The first and second phase corrected image representations are summed (100) and stored in a resultant image memory (102).
公开/授权文献
- US6157981A Real time invariant behavior cache 公开/授权日:2000-12-05
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