Extending a birdcage coil for magnetic resonance imaging of a human head with an artificial magnetic shield

2016 Vaughan, 2012 Hayes, 2009, The development of the birdcage resonator: a historical perspective, NMR Biomed., 22, 908, 10.1002/nbm.1431 Doty, 2018, Pros and cons of ultra-high-field MRI/MRS for human application, Prog. Nucl. Magn. Reson. Spectrosc., 109, 1, 10.1016/j.pnmrs.2018.06.001 R. Pohmann, O. Speck, K. Scheffler, Signal-to-noise ratio and MR tissue parameters in human brain imaging at 3,4, and 9.4 Tesla using current receive coil arrays, Magnetic Resonance in Medicine 75. B. Guerin, J. Villena, A. Polimeridis, E. Adalsteinsson, L. Daniel, J. White, L. Wald, The ultimate signal-to-noise ratio in realistic body models, Magnetic Resonance in Medicine 78. Moser, 2017, Ultra-high field NMR and MRI-the role of magnet technology to increase sensitivity and specificity, Front. Phys., 5, 33, 10.3389/fphy.2017.00033 Vaughan, 2001, 7T vs. 4T: RF power, homogeneity, and signal-to-noise comparison in head images, Magn. Reson. Med, 46, 24, 10.1002/mrm.1156 Avdievich, 2011, Transceiver-phased arrays for human brain studies at 7 T, Appl. Magn. Reson., 41, 483, 10.1007/s00723-011-0280-y N. Avdievich, G. Solomakha, L. Ruhm, J. Bause, K. Scheffler, A. Henning, Bent folded-end dipole head array for ultrahigh-field MRI turns “dielectric resonance” from an enemy to a friend, Magnetic resonance in medicine. P.F, 2016, Parallel transmission for ultrahigh-field imaging, NMR Biomed., 29, 1145, 10.1002/nbm.3313 J. Hoffmann, S. Gunamony, K. Scheffler, R. Pohmann, Numerical and experimental evaluation of RF shimming in the human brain at 9.4 T using a dual-row transmit array, Magma (New York, N.Y.) 27. Doty, 2007, Radio frequency coil technology for small-animal MRI, NMR Biomed., 20, 304, 10.1002/nbm.1149 Harpen, 1993, Radiative losses of a birdcage resonator, Magn. Reson. Med., 29, 713, 10.1002/mrm.1910290522 Collins, 1997, A method for accurate calculation of B1 fields in three dimensions. Effects of shield geometry on field strength and homogeneity in the birdcage coil, J. Magn. Res., 125, 233, 10.1006/jmre.1997.1136 Capolino, 2009 Sievenpiper, 1999, High-impedance electromagnetic surfaces with a forbidden frequency band, IEEE Trans. Microw. Theory Tech, 47, 2059, 10.1109/22.798001 Feresidis, 2005, Artificial magnetic conductor surfaces and their application to low-profile high-gain planar antennas, IEEE Trans. Ant. Propag., 53, 209, 10.1109/TAP.2004.840528 Kildal, 1990, Artificially soft and hard surfaces in electromagnetics, IEEE Trans. Ant. Propag., 8, 1537, 10.1109/8.59765 Chen, 2016, Electromagnetic field analysis of a dipole coil element with surface impedance characterized shielding plate for 7-T MRI, IEEE Trans. Microw. Theory Tech, 64, 392, 10.1109/TMTT.2016.2518168 Chen, 2017, Improving B1 efficiency and signal-to-noise-ratio of a surface coil by a high-impedance-surface RF shield for 7-T magnetic resonance imaging, IEEE Trans. Micr. Theor. Tech., 65, 988, 10.1109/TMTT.2016.2631169 C. van Leeuwen, M. Lunenburg, S. Glybovski, P. Luijten, D. Klomp, C. van den Berg, A. Raaijmakers, Improved performance of birdcage coils using a split-ring resonator magnetic shield, In Proceedings of Joint Annual Meeting ISMRM - ESMRMB. Lezhennikova, 2020, Constructive near-field interference effect in a birdcage MRI coil with an artificial magnetic shield, Phys. Rev. Applied, 13, 064004, 10.1103/PhysRevApplied.13.064004 Yang, 2004, Phantom design method for high-field MRI human systems, Magn Reson Med., 52, 1016, 10.1002/mrm.20245 Christ, 2010, The virtual family-development of surface-based anatomical models of two adults and two children for dosimetric simulations, Phys. Med. Biol., 55, N23, 10.1088/0031-9155/55/2/N01