- 专利标题: Method for determining the spatial distribution of magnetic resonance signals in subvolumes of an object under examination
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申请号: US14009116申请日: 2012-04-18
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公开(公告)号: US09958522B2公开(公告)日: 2018-05-01
- 发明人: Wolfgang Ruhm , Johannes Schneider , Peter Ullmann
- 申请人: Wolfgang Ruhm , Johannes Schneider , Peter Ullmann
- 申请人地址: DE Ettlingen
- 专利权人: Bruker BioSpin MRI GmbH
- 当前专利权人: Bruker BioSpin MRI GmbH
- 当前专利权人地址: DE Ettlingen
- 代理商 Paul Vincent
- 优先权: DE102011007825 20110420
- 国际申请: PCT/EP2012/057037 WO 20120418
- 国际公布: WO2012/143369 WO 20121026
- 主分类号: G01R33/483
- IPC分类号: G01R33/483 ; A61B5/055 ; G01R33/561 ; G01R33/24 ; G01R33/385
摘要:
A method for determining the spatial distribution of magnetic resonance signals from at least one of N subvolumes predefines a reception encoding scheme and determines unique spatial encoding for at least one of the subvolumes but not for the entire volume under examination (UV). A transmission encoding scheme is also defined, wherein encoding is effected via the amplitude and/or phase of the transverse magnetization. The temporal amplitude and phase profile of the RF pulses is then calculated and each reception encoding step is carried out I times with variations according to the I transmission encoding steps in the transmission encoding scheme. The method makes it possible to largely restrict the spatially resolving MR signal encoding and image reconstruction to subvolumes of the object under examination without the achievable image quality sensitively depending on imperfections in the MR apparatus.
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