发明授权
- 专利标题: Magnetic resonance imaging apparatus having a detuned RF coil
- 专利标题(中): 磁共振成像装置具有失谐的RF线圈
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申请号: US59283申请日: 1987-06-08
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公开(公告)号: US4788503A公开(公告)日: 1988-11-29
- 发明人: Teunis R. Van Heelsbergen
- 申请人: Teunis R. Van Heelsbergen
- 申请人地址: NY New York
- 专利权人: U.S. Philips Corporation
- 当前专利权人: U.S. Philips Corporation
- 当前专利权人地址: NY New York
- 优先权: NLX8603252 19861222
- 主分类号: G01R33/32
- IPC分类号: G01R33/32 ; A61B5/055 ; A61B10/00 ; G01R33/34 ; G01R33/36 ; G01R33/20
摘要:
In magnetic resonance imaging apparatus in which bird-cage coils are used in combination with other coils, a capacitance is bridged by means of an inductive element. Substantial detuning and hence adequate uncoupling of the bird-cage coil from the other (receiving) coil is achieved. Use can be made of the already present coaxial transmission line via which the RF energy is applied to the bird-cage coil. Connecting the core and the jacket of the coaxial transmission line there is arranged a diode switch so that the bird-cage coil circuit can be electronically detuned, thus enabling fast switching on and off of the bird-cage coil.
公开/授权文献
- USD395116S Cover plate for winch housing 公开/授权日:1998-06-09