| 摘要 |
PURPOSE: A radio frequency coil for open magnetic resonance imaging system is provided to improve a quadrature phase coil suitable for use in an open frame type MRI system. CONSTITUTION: A radio frequency coil comprises a first conductor array(32a) providing separated and substantially aligned conductor elements(34a) positioned along a first conductor axis extending across the polarizing field axis to opposed, common connection points, a second conductor array(32b) providing separated and substantially aligned conductor elements(34b) positioned along a second conductor axis extending across the polarizing field axis to opposed, connection points and substantially perpendicular to the first conductor elements, a combiner/splitter electrically communicating with a connection point of each of the first and second conductor arrays to join the connection points with a signal line so that a signal path between the signal line and the common connection point of the first conductor array has a substantially 90 degree phase difference from a signal path between the common signal line and the connection point of the second conductor array, and an isolation circuit coupled between the first and second conductor arrays to act as a blocking parallel resonance at the radio frequency.
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