发明名称 |
Antenna system and magnetic resonance imaging apparatus |
摘要 |
An RF coil is provided with a hollow-shaped outer conductive element and strip-shaped conductive elements disposed along the outer conductive element in the axial direction. The strip-shaped conductive elements are disposed with uneven intervals to secure an internal space at a position where the strip-shaped conductive elements are not disposed. In order to obtain uniform sensitivity at the center section of the RF coil, the strip-shaped conductive elements and the outer conductive element are electrically connected via capacitors of which capacitances are adjusted so that a magnetic field component perpendicular to the center axis should be generated at a desired resonance frequency, and the strip-shaped conductive elements are axisymmetrically disposed with respect to the center axis of the outer conductive element. As a result, a comfortable examination space in a tunnel type MRI apparatus is achieved without increasing the manufacturing cost of the MRI apparatus. |
申请公布号 |
US8648597(B2) |
申请公布日期 |
2014.02.11 |
申请号 |
US20100702666 |
申请日期 |
2010.02.09 |
申请人 |
HABARA HIDETA;BITO YOSHITAKA;OCHI HISAAKI;SOUTOME YOSHIHISA;DOHATA MASAYOSHI;TAKAHASHI TETSUHIKO;TAKEUCHI HIROYUKI;HITACHI MEDICAL CORPORATION |
发明人 |
HABARA HIDETA;BITO YOSHITAKA;OCHI HISAAKI;SOUTOME YOSHIHISA;DOHATA MASAYOSHI;TAKAHASHI TETSUHIKO;TAKEUCHI HIROYUKI |
分类号 |
G01R33/34 |
主分类号 |
G01R33/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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