发明申请
- 专利标题: ANTENNA DEVICE
- 专利标题(中): 天线设备
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申请号: US13577885申请日: 2011-01-21
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公开(公告)号: US20120299594A1公开(公告)日: 2012-11-29
- 发明人: Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Masayoshi Dohata , Tetsuhiko Takahashi , Hiroyuki Takeuchi
- 申请人: Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Masayoshi Dohata , Tetsuhiko Takahashi , Hiroyuki Takeuchi
- 申请人地址: JP Tokyo
- 专利权人: Hitachi Medical Corporation
- 当前专利权人: Hitachi Medical Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP2010-041274 20100226
- 国际申请: PCT/JP2011/051122 WO 20110121
- 主分类号: G01R33/28
- IPC分类号: G01R33/28
摘要:
There is provided a technique for securing a comfortable examination space in a tunnel type MRI apparatus without increasing the manufacturing cost of the MRI apparatus and sacrificing performance thereof. In an RF coil provided with a hollow-shaped outer conductive element and a strip-shaped conductive element disposed along the outer conductive element in the axial direction, meander lines constituting the strip-shaped conductive element are disposed at uneven distances from the outer conductive element to secure an internal space. In order to obtain uniform sensitivity at the center of the RF coil, the strip-shaped conductive element is constituted with N of connected meander lines, and length of the strip-shaped conductive element is adjusted so that, in the strip-shaped conductive element resonating at resonance frequency of the antenna, nodes are formed in a number of (M+1)×N−1, wherein M is 0 or a natural number of 1 or larger.
公开/授权文献
- US09182463B2 Magnetic resonance examination apparatus and antenna device 公开/授权日:2015-11-10
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