Dielectric waveguides for ultrahigh field magnetic resonance imaging

The design of RF coils for MRI transmit becomes increasingly challenging at high frequencies required for MRI at 7T and above. Our goal is to show a proof of principle of a new type of transmit coil for higher field strengths.

[1]  Gregory Chang,et al.  MRI of the wrist at 7 tesla using an eight‐channel array coil combined with parallel imaging: Preliminary results , 2010, Journal of magnetic resonance imaging : JMRI.

[2]  Zang-Hee Cho,et al.  Observation of the Lenticulostriate Arteries in the Human Brain In Vivo Using 7.0T MR Angiography , 2008, Stroke.

[3]  Klaus Scheffler,et al.  A 16‐channel dual‐row transmit array in combination with a 31‐element receive array for human brain imaging at 9.4 T , 2014, Magnetic resonance in medicine.

[4]  Zang-HeeCho,et al.  Observation of the Lenticulostriate Arteries in the Human Brain In Vivo Using 7.0T MR Angiography , 2008 .

[5]  Steen Moeller,et al.  B1 destructive interferences and spatial phase patterns at 7 T with a head transceiver array coil , 2005, Magnetic resonance in medicine.

[6]  Klaas P. Pruessmann,et al.  Travelling-wave nuclear magnetic resonance , 2009, Nature.

[7]  Andrew G Webb,et al.  Design and evaluation of a detunable water‐based quadrature HEM11 mode dielectric resonator as a new type of volume coil for high field MRI , 2012, Magnetic resonance in medicine.

[8]  Vasily L Yarnykh,et al.  Optimal radiofrequency and gradient spoiling for improved accuracy of T1 and B1 measurements using fast steady‐state techniques , 2010, Magnetic resonance in medicine.

[9]  C A T van den Berg,et al.  Design of a radiative surface coil array element at 7 T: The single‐side adapted dipole antenna , 2011, Magnetic resonance in medicine.

[10]  G. Metzger,et al.  Local B1+ shimming for prostate imaging with transceiver arrays at 7T based on subject‐dependent transmit phase measurements , 2008, Magnetic resonance in medicine.

[11]  R S Balaban,et al.  The evaluation of dielectric resonators containing H2O or D2O as RF coils for high-field MR imaging and spectroscopy. , 1996, Journal of magnetic resonance. Series B.

[12]  R. Goebel,et al.  7T vs. 4T: RF power, homogeneity, and signal‐to‐noise comparison in head images , 2001, Magnetic resonance in medicine.

[13]  Andrew G. Webb,et al.  Dielectric Materials in Magnetic Resonance , 2011 .

[14]  J. Zwanenburg,et al.  High‐resolution MRI of the carotid arteries using a leaky waveguide transmitter and a high‐density receive array at 7 T , 2013, Magnetic resonance in medicine.

[15]  Mark E Ladd,et al.  Open design eight-channel transmit/receive coil for high-resolution and real-time ankle imaging at 7 T. , 2011, Medical physics.

[16]  Ravi S. Menon,et al.  A transmit‐only/receive‐only (TORO) RF system for high‐field MRI/MRS applications , 2000, Magnetic resonance in medicine.

[17]  Peter Andersen,et al.  Whole‐body imaging at 7T: Preliminary results , 2009, Magnetic resonance in medicine.

[18]  T. Ibrahim,et al.  Application of finite difference time domain method for the design of birdcage RF head coils using multi-port excitations. , 2000, Magnetic resonance imaging.

[19]  F. Shimabukuro,et al.  The Essence of Dielectric Waveguides , 2008 .

[20]  Yukihiko Fujii,et al.  In Vivo Visualization of Senile‐Plaque‐Like Pathology in Alzheimer's Disease Patients by MR Microscopy on a 7T System , 2008, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

[21]  G J Metzger,et al.  Initial results of cardiac imaging at 7 tesla , 2009, Magnetic resonance in medicine.

[22]  A. Stogryn,et al.  Equations for Calculating the Dielectric Constant of Saline Water (Correspondence) , 1971 .

[23]  S. Nelson,et al.  Quantitative in vivo magnetic resonance imaging of multiple sclerosis at 7 Tesla with sensitivity to iron , 2008, Annals of neurology.

[24]  A. Belous,et al.  New ceramic EPR resonators with high dielectric permittivity. , 2008, Journal of magnetic resonance.

[25]  Jeff H. Duyn,et al.  High-field MRI of brain cortical substructure based on signal phase , 2007, Proceedings of the National Academy of Sciences.

[26]  K. Uğurbil,et al.  Temperature and SAR calculations for a human head within volume and surface coils at 64 and 300 MHz , 2004, Journal of magnetic resonance imaging : JMRI.

[27]  Nikolai I Avdievich,et al.  Transceiver-Phased Arrays for Human Brain Studies at 7 T , 2011, Applied magnetic resonance.

[28]  P. Boesiger,et al.  Electrodynamics and ultimate SNR in parallel MR imaging , 2004, Magnetic resonance in medicine.

[29]  Peter Andersen,et al.  9.4T human MRI: Preliminary results , 2006, Magnetic resonance in medicine.