Abstract: In accordance with various embodiments, a radio frequency (RF) coil array for use in a magnetic resonance imaging (MRI) system includes at least first and second RF coils. Each of the RF coils have a main body loop configured to at least one of transmit or receive RF energy at an operating imaging frequency in connection with acquiring MRI image data for an MRI system. The RF coil array also includes first and second cables configured to electrically couple the first and second RF coils, respectively, to a system interface. The RF coil array also includes a common ground connection between the first and second cables. The common ground connection is selectively positioned at a grounding point along lengths of the first and second cables to form a ground loop having a select self-resonance frequency (SRF) that differs from the imaging frequency of the MRI system.

Abstract: In accordance with various embodiments, a radio frequency (RF) coil array for use in a magnetic resonance imaging (MRI) system includes at least first and second RF coils. Each of the RF coils have a main body loop configured to at least one of transmit or receive RF energy at an operating imaging frequency in connection with acquiring MRI image data for an MRI system. The RF coil array also includes first and second cables configured to electrically couple the first and second RF coils, respectively, to a system interface. The RF coil array also includes a common ground connection between the first and second cables. The common ground connection is selectively positioned at a grounding point along lengths of the first and second cables to form a ground loop having a select self-resonance frequency (SRF) that differs from the imaging frequency of the MRI system.

Abstract: A radio frequency coil array (50) includes at least first (501) and second (502) receive coils. A flux pipe (52) includes electrically connected first (2521) and second (2522) loop coils. The first (2521) and second (2522) loop coils are coupled to the respective first and second receive coils. The flux pipe (52) reduces mutual inductance between the first (501) and second (502) receive coils.

Abstract: An apparatus for use in a magnetic resonance examination includes a radio frequency receive coil (50) and adjustable tuning circuitry (51) for adjusting the resonant frequency of the receive coil. The apparatus also includes a preamplifier (29) which amplifies signals generated by the receive coil. An adjustable feedback circuit (31) alters an effective Q of the receive coil.

Abstract: An apparatus for use in a magnetic resonance examination includes a radio frequency receive coil (50) and adjustable tuning circuitry (51) for adjusting the resonant frequency of the receive coil. The apparatus also includes a preamplifier (29) which amplifies signals generated by the receive coil. An adjustable feedback circuit (31) alters an effective Q of the receive coil.

Abstract: A magnetic resonance imaging system includes a primary magnet and a secondary magnet operable to produce magnetic fields within a sample being imaged. The MRI system further includes at least one RF coil that is operable to receive electromagnetic frequencies from the sample. The RF coil is formed from tubing that serves as a cooling conduit through which flows a cooling fluid provided by a cooling source. The cooling fluid cools the RF coils to improve imaging of the sample.

Abstract: A radio frequency coil array (50) includes at least first (501) and second (502) receive coils. A flux pipe (52) includes electrically connected first (2521) and second (2522) loop coils. The first (2521) and second (2522) loop coils are coupled to the respective first and second receive coils. The flux pipe (52) reduces mutual inductance between the first (501) and second (502) receive coils.

Abstract: A magnetic resonance imaging system includes a primary magnet and a secondary magnet operable to produce magnetic fields within a sample being imaged. The MRI system further includes at least one RF coil that is operable to receive electromagnetic frequencies from the sample. The RF coil is formed from tubing that serves as a cooling conduit through which flows a cooling fluid provided by a cooling source. The cooling fluid cools the RF coils to improve imaging of the sample.