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DISPOSITIF D'ANTENNE
专利权人:
Hitachi Medical Corporation
发明人:
申请号:
EP11747107.8
公开号:
EP2540223A1
申请日:
2011.01.21
申请国别(地区):
EP
年份:
2013
代理人:
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) x N - 1, wherein M is 0 or a natural number of 1 or larger.
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