Systems and methods for damping common-mode energy
First Claim
Patent Images
1. A magnetic resonance compatible damping arrangement comprising:
- a transmission line within an electric (E) field environment, the transmission line connected to a transmit coil of a magnetic resonance imaging (MRI) system; and
an energy damping device formed having a conductive plastic body and positioned adjacent to and in direct contact with a contacting conductor of the transmission line that is connected to the transmit coil, wherein the energy damping device is in direct physical contact with less than an entire circumference of the contacting conductor and with less than an entire length of the contacting conductor, the energy damping device being configured to dampen common-mode energy induced within the transmission line that is connected to the transmit coil by the E field environment as a result of the direct contact between the conductive plastic body and the transmission line.
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Abstract
Systems and methods for damping cable common-mode energy in magnetic environments are provided. One system includes a damping arrangement having a transmission line within an electric (E) field environment and an energy damping device formed having a conductive plastic body and positioned adjacent a conductor of the transmission line. The energy damping device is configured to dampen common-mode energy induced within the transmission line by the E field environment.
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Citations
29 Claims
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1. A magnetic resonance compatible damping arrangement comprising:
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a transmission line within an electric (E) field environment, the transmission line connected to a transmit coil of a magnetic resonance imaging (MRI) system; and an energy damping device formed having a conductive plastic body and positioned adjacent to and in direct contact with a contacting conductor of the transmission line that is connected to the transmit coil, wherein the energy damping device is in direct physical contact with less than an entire circumference of the contacting conductor and with less than an entire length of the contacting conductor, the energy damping device being configured to dampen common-mode energy induced within the transmission line that is connected to the transmit coil by the E field environment as a result of the direct contact between the conductive plastic body and the transmission line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A magnetic resonance imaging (MRI) system comprising:
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an imaging unit having at least one transmit coil; a processing unit portion having at least one processor; a system interface interconnecting the imaging unit and the processing unit, the system interface connected to the at least one transmit coil with at least one transmission line; and a magnetic resonance compatible energy damping device formed having a conductive plastic body and positioned adjacent to and in direct contact with a contacting conductor of the at least one transmission line, wherein the energy damping device is in direct physical contact with less than entire circumference of the contacting conductor and with less than an entire length of the contacting conductor, the energy damping device being configured to dampen common-mode energy induced within the at least one transmission line as a result of the direct contact between the conductive plastic body and the transmission line. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A magnetic resonance compatible method of damping common-mode cable currents in an electric (E) field environment, the method comprising:
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providing at least one conductive plastic patch having damping properties; and positioning the at least one conductive plastic patch at a high voltage node of a transmission line connected to a transmit coil of a magnetic resonance imaging (MRI) system within the E field environment in order to dampen common-mode energy induced in the transmission line by an E field of the E field environment, wherein the conductive plastic patch is in direct contact with a contacting conductor of the transmission line that is connected to the transmit coil, wherein the conductive plastic patch is in direct physical contact with less than an entire circumference of the contacting conductor and with less than an entire length of the contacting conductor, the conductive plastic patch being configured to dampen the common-mode energy induced in the transmission ling that is connected to the transmit coil as a result of the direct contact between the conductive plastic patch and the transmission line. - View Dependent Claims (27, 28, 29)
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Specification