发明名称 |
Multiple tunable double ring surface coil with high B1 homogeneity |
摘要 |
To perform multinuclear magnetic resonance spectroscopy and imaging, a coil with a high signal-to-noise ratio and spatially uniform B1 field that covers the same volume of interest at several frequencies is preferred. A radio frequency surface coil probe that produces a homogeneous field within the same volume for both 31P and 1H is described. The probe provides signal to noise characteristics close to those of a single frequency double ring assembly. It acquired excellent proton images and 31P spectra from an image selected voxel in rat liver at 7 T. The probe uses a double ring construction where each ring is tuned by a parallel LC trap to two or more different frequencies. A calculation of the values of the inductance and capacitance allows the double coil arrangement to be tuned to the required frequencies with a peak of the homogeneity at each frequency occurring at the same distance from the coil and with good Q. The probe is powered by a driver coil adjacent to the probe by mutual inductance.
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申请公布号 |
US2001033165(A1) |
申请公布日期 |
2001.10.25 |
申请号 |
US20010754054 |
申请日期 |
2001.01.05 |
申请人 |
NATIONAL RESEARCH COUNCIL OF CANADA |
发明人 |
TOMANEK BOGUSLAW;VOLOTOVSKKY VYACHESLAV |
分类号 |
G01R33/341;G01R33/36;(IPC1-7):G01V3/00 |
主分类号 |
G01R33/341 |
代理机构 |
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主权项 |
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地址 |
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