Benefits of a wireless metamaterial-based radiofrequency coil for clinical wrist MRI

2020 ◽  
Author(s):  
Ekaterina Brui ◽  
Anna Lepekhina ◽  
Daria Chegina ◽  
Tatiana Bukkieva ◽  
Aleksandr Efimtcev ◽  
...  
Keyword(s):  
Radiofrequency Coil

scholarly journals Double-tuned Radiofrequency Coil for 19F and 1H Imaging

2014 ◽  
Vol 13 (3) ◽  
pp. 199-205 ◽  
Author(s):  
Yosuke OTAKE ◽  
Yoshihisa SOUTOME ◽  
Koji HIRATA ◽  
Hisaaki OCHI ◽  
Yoshitaka BITO
Keyword(s):  
Radiofrequency Coil

Quantitative T 1 and proton density mapping with direct calculation of radiofrequency coil transmit and receive profiles from two-point variable flip angle data

2016 ◽  
Vol 29 (3) ◽  
pp. 349-360 ◽  
Author(s):  
Simon Baudrexel ◽  
Sarah C. Reitz ◽  
Stephanie Hof ◽  
René-Maxime Gracien ◽  
Vinzenz Fleischer ◽  
...  
Keyword(s):  
Direct Calculation ◽  
Flip Angle ◽  
Proton Density ◽  
Variable Flip Angle ◽  
Density Mapping ◽  
Radiofrequency Coil ◽  
Angle Data

scholarly journals High-Field Pulsed ENDOR with Intra-cavity Radiofrequency Coil

2020 ◽  
Vol 51 (11) ◽  
pp. 1433-1449
Author(s):  
G. Annino ◽  
H. Moons ◽  
M. Fittipaldi ◽  
S. Van Doorslaer ◽  
E. Goovaerts
Keyword(s):  
Magnetic Field ◽  
High Field ◽  
Conversion Factor ◽  
Signal To Noise Ratio ◽  
Model Systems ◽  
Signal To Noise ◽  
Radiofrequency Coil ◽  
W Band ◽  
Radiofrequency Current ◽  
Field Uniformity

AbstractThis study compares the performance of two coil configurations for W-band pulsed ENDOR using a setup with both a radiofrequency ‘hairpin’ coil internal to a microwave non-radiative resonator and Helmholtz-like coils external to the resonator. Evaluation of the different coil performances is achieved via the ENDOR study of two model systems. The efficiencies of the coil configurations are first investigated numerically, showing that a higher radiofrequency current-to-magnetic field conversion factor can be achieved with the intra-cavity coil, with a similar radiofrequency magnetic field uniformity. This result is then confirmed by the broadband ENDOR spectra acquired with the two coil arrangements. A gain in the signal-to-noise ratio enabled by the internal coil of about a factor 10 was observed. In some cases, the high conversion factor of the intra-cavity coil led to a saturation of the ENDOR transitions. The possibility to implement a similar intra-cavity radiofrequency coil configuration in higher field spectrometers is finally discussed.

scholarly journals A radiofrequency coil configuration for imaging the human vertebral column at 7T

2011 ◽  
Vol 208 (2) ◽  
pp. 291-297 ◽  
Author(s):  
M. Vossen ◽  
W. Teeuwisse ◽  
M. Reijnierse ◽  
C.M. Collins ◽  
N.B. Smith ◽  
...  
Keyword(s):  
Vertebral Column ◽  
Radiofrequency Coil

Comparison of three multichannel transmit/receive radiofrequency coil configurations for anatomic and functional cardiac MRI at 7.0T: implications for clinical imaging

2012 ◽  
Vol 22 (10) ◽  
pp. 2211-2220 ◽  
Author(s):  
Lukas Winter ◽  
Peter Kellman ◽  
Wolfgang Renz ◽  
Andreas Gräßl ◽  
Fabian Hezel ◽  
...  
Keyword(s):  
Cardiac Mri ◽  
Clinical Imaging ◽  
Radiofrequency Coil

Magnetic resonance imaging of the inner ear by using a hybrid radiofrequency coil at 7 T

2015 ◽  
Vol 66 (2) ◽  
pp. 175-182 ◽  
Author(s):  
Kyoung-Nam Kim ◽  
Phil Heo ◽  
Young-Bo Kim ◽  
Gyu-Cheol Han
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Inner Ear ◽  
Resonance Imaging ◽  
Radiofrequency Coil

Radiofrequency coil design for simultaneous PET/MR systems

2010 ◽  
Author(s):  
P D E Herrick ◽  
R E Ansorge ◽  
R C Hawkes ◽  
S J Sawiak ◽  
J W Stevick ◽  
...  
Keyword(s):  
Coil Design ◽  
Radiofrequency Coil
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