INTEGRATED CAPACITOR SHIELD FOR BALUN IN MRI RECEIVERS
First Claim
Patent Images
1. A magnetic resonance imaging (MRI) system comprising:
- at least one magnet for generating a magnetic field;
at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field; and
at least one receiver coil to receive electromagnetic signals from the manipulated magnetic field;
at least one balun connected to the receiver coil to condition the received electromagnetic signals; and
wherein the at least one balun includes a balun shield having a capacitance and a common mode inductance to create a parallel resonant circuit.
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Abstract
A balun is included in a magnetic resonance imaging system. The balun conditions electromagnetic signals received from at least one RF receiver coil. The balun includes a balun shield having an integrated capacitor therein. The balun shield blocks unwanted feedback from effecting performance of any components contained within the balun shield.
24 Citations
27 Claims
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1. A magnetic resonance imaging (MRI) system comprising:
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at least one magnet for generating a magnetic field; at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field; and at least one receiver coil to receive electromagnetic signals from the manipulated magnetic field; at least one balun connected to the receiver coil to condition the received electromagnetic signals; and wherein the at least one balun includes a balun shield having a capacitance and a common mode inductance to create a parallel resonant circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A balun module comprising:
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a common mode inductor; a shield having an end plate thereon; and a parallel plate capacitor integrated into the end plate. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of manufacturing a balun module the method comprising:
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enclosing a common-mode inductor within a balun shield; attaching an end plate to the balun shield; and integrating a parallel plate capacitor into the balun shield, the parallel plate capacitor having a non-magnetic inner conductor and outer conductor on a dielectric substrate. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification