发明授权
- 专利标题: Magnetic resonance with time sequential spin excitation
- 专利标题(中): 磁共振随时间顺序旋转激发
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申请号: US12297652申请日: 2007-04-03
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公开(公告)号: US07852084B2公开(公告)日: 2010-12-14
- 发明人: Zhiyong Zhai , Gordon D. DeMeester , Michael A. Morich , Paul R. Harvey
- 申请人: Zhiyong Zhai , Gordon D. DeMeester , Michael A. Morich , Paul R. Harvey
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人地址: NL Eindhoven
- 国际申请: PCT/US2007/065841 WO 20070403
- 国际公布: WO2007/124245 WO 20071101
- 主分类号: G01V3/00
- IPC分类号: G01V3/00
摘要:
In a magnetic resonance scanner, a main magnet (20, 22) generates a static magnetic field at least in an examination region. A magnetic field gradient system (30, 54) selectively superimposes magnetic field gradients on the static magnetic field at least in the examination region. A magnetic resonance excitation system (36, 36′) includes at least one radio frequency coil (30, 301, 302, 303) arranged to inject radio frequency B1 fields into the examination region and at least two radio frequency amplifiers (38, 40, 40′) coupled with different input ports of the at least one radio frequency coil. A controller (66, 70) controls the magnetic resonance excitation system to produce a time varying spatial B1 field distribution in a subject (16) in the examination region that time integrates to define a spatial tip angle distribution in the subject having reduced spatial non uniformity.
公开/授权文献
- US20090102483A1 MAGNETIC RESONANCE WITH TIME SEQUENTIAL SPIN EXCITATION 公开/授权日:2009-04-23