发明授权
- 专利标题: High speed NMR spectroscopic imaging method
- 专利标题(中): 高速NMR光谱成像方法
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申请号: US151901申请日: 1988-02-03
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公开(公告)号: US4797616A公开(公告)日: 1989-01-10
- 发明人: Shigeru Matsui , Takashi Onodera , Kensuke Sekihara , Hidemi Shiono , Hideki Kohno
- 申请人: Shigeru Matsui , Takashi Onodera , Kensuke Sekihara , Hidemi Shiono , Hideki Kohno
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX62-22310 19870204
- 主分类号: G01R33/32
- IPC分类号: G01R33/32 ; A61B5/055 ; A61B10/00 ; G01R33/44 ; G01R33/48 ; G01R33/485 ; G01R33/20
摘要:
An NMR spectroscopic imaging method of obtaining separate spin distribution images for respective spectral components of the spectrum of an NMR signal caused by the chemical shift of nuclides of interest in an object includes providing for a transversal magnetization signal of the object placed in a static magnetic field. A position of the signal in a phase domain is translated in a K-space from the origin thereof. Further, the signal is sampled while rotating a position of the signal in the K-space plural times on a certain circle in the K-space by applying a rotating field gradient, thereby to obtain a group of signal data. Signal data trains each of which is composed of signal data present at the same position on the K-space in the signal data group obtained by the sampling during the plural signal rotations, is subjected to Fourier transformations, respectively, thereby effecting a spectral analysis of the NMR signal.