Ultrahigh magnetic field imaging of the knee using a transmit/receive array coil
نویسندگان
چکیده
U. Goerke, P. J. Bolan, C. Akgun, G. Adriany, C. Snyder, P-F. van de Moortele, L. DelaBarre, N. Harel, T. Vaughan, K. Ugurbil, and J. Ellermann Center for Magnetic Resonance Research, Radiology/University of Minnesota Medical School, Minneapolis, Minnesota, United States, High Field Magnetic Resonance Research Lab, Max-Planck-Institute for Biological Cybernetics, Tuebingen, Germany, Radiology, University of Minnesota Medical School, Minneapolis, Minnesota, United States
منابع مشابه
Assessment of the Characteristics of MRI Coils in Terms of RF Non-Homogeneity Using Routine Spin Echo Sequences
Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of non-homogeneity in RF receive and transmit. This can be the most effective source of error in quantitative studies in MRI imaging. Part of this non-homogeneity demonstrates the characteristics of RF coil and part of it is due to the interaction of RF field with the material being imaged...
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One of the technical challenges in designing a dedicated transceiver radio frequency (RF) array for MR imaging in humans at ultrahigh magnetic fields is how to effectively decouple the resonant elements of the array. In this work, we propose a new approach using tilted microstrip array elements for improving the decoupling performance and potentially parallel imaging capability. To investigate ...
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PURPOSE Cardiac phosphorus magnetic resonance spectroscopy (31P-MRS) provides unique insight into the mechanisms of heart failure. Yet, clinical applications have been hindered by the restricted sensitivity of the surface radiofrequency-coils normally used. These permit the analysis of spectra only from the interventricular septum, or large volumes of myocardium, which may not be meaningful in ...
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High-frequency coils are widely used in medical applications, such as Magnetic Resonance Imaging (MRI) systems. A typical medical MRI includes a local radio frequency transmit/receive coil. This coil is designed for maximum energy transfer or wave transfer through magnetic resonance. Mutual inductance is a dynamic parameter that determines the energy quantity to be transferred wirelessly by ele...
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Background Cardiac MR (CMR) at ultrahigh fields (≥7.0 T) is challenged by B1+ inhomogeneities and signal voids which bear the potential to spoil the signal-to-noise (SNR) benefits at 7.0 T. There is a trend towards an ever larger number of transmit and receive channels, to support multidimensional B1+ shimming and parallel imaging. Therefore this work proposes a modular, two dimensional 32-chan...
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