ISMRM25 - Non-Array RF Coils/Antennas/Waveguides

ISMRM & ISMRT Annual Meeting & Exhibition • 10-15 May 2025 • Honolulu, Hawai'i

Non-Array RF Coils/Antennas/Waveguides

Digital Poster

Physics & Engineering

Wednesday, 14 May 2025

Exhibition Hall

09:15 - 10:15

Session Number: D-199

No CME/CE Credit

		Computer Number: 113 3454. Parallel Imaging using Metasurface Resonators View Presentation Video R. Kowal, N. Paulig, D. Arnecke, L. Knull, I. Vogt, M. J. Hubmann, D. Düx, B. Hensen, M. Gutberlet, F. Wacker, O. Speck, H. Maune Otto von Guericke University Magdeburg, Magdeburg, Germany Impact: We demonstrated and quantified the compatibility of wireless metasurface resonators with parallel imaging in phantom and in vivo. This enables future studies to expand the application area of these novel coil alternatives or develop special designs for improved parallel imaging.
		Computer Number: 114 3455. Proton-Frequency-Transparent Coaxial RF coil for X-Nuclei MRI/MRS View Presentation Video M. Lu, Y. Yang, X. Yan Vanderbilt University medical center, Nashville, United States Impact: This coil design offers a practical solution for X-nuclei MRI by maintaining high impedance at the ¹H frequency, reducing interference with proton imaging, and supporting flexible, high-SNR, multinuclear imaging in a compact form.
		Computer Number: 115 3456. Comparison of Dipole and Sleeve antenna arrays for Optimized Human Head Imaging at 10.5 Tesla View Presentation Video Y. D. Park, L. DelaBarre, M. Waks, J. M. Kwak, Y. B. Lee, K. Ugurbil, G. Adriany, M. K. Woo Hankuk University of Foreign Studies, Yongin, Korea, Republic of Impact: Our simulations and experiments comparing sleeve and dipole antenna arrays indicate that the antenna validation is notable affected by the presence of coaxial feed cables and that those need to be included for accurate results.
		Computer Number: 116 3457. Evaluation of a Flexible 8-Channel Coaxial Monopole Array for Knee Bone Marrow ASL Imaging at 7T View Presentation Video M. Waks, M. Mustafa, A. Sadeghi-Tarakameh, A. Bratch, Y. Eryaman, X. Wu, J. Ellermann, G. Adriany, G. Metzger, X. Li University of Minnesota, Minneapolis, United States Impact: ASL imaging of the knee is critical for scientific research and clinical studies. Developing better pTx coils will improve the quality, reliability, and efficiency of knee ASL imaging at ultra-high fields.
		Computer Number: 117 3458. Enhancing B1+ at 7T MRI by combining a compact metamaterial devised from artificial dielectric with a TIAMO-like acquisition View Presentation Video S. K. Maurya, R. Schmidt Weizmann Institute of Science, Rehovot, Israel Impact: We demonstrated a new compact and thin AD and metamaterial configuration that does not require lumped elements for 7T MRI. Importantly, we showed that the use of B1-shim can further increase the achieved enhancement.
		Computer Number: 118 3459. AeroCoil: A non-electric switchable RF coil for 1H and 2H imaging View Presentation Video C. Herabut, B. Valle, S. McClendon, D. Ortega, S. Beeman, V. Kodibagkar, S-M Sohn Arizona State University, Tempe, United States Impact: By removing electric components, AeroCoil offers a promising advantage for X-nuclei imaging, where tunable RF coils are essential and maximizing SNR is critical.
		Computer Number: 119 3460. Bore-integrated single-channel dipole antenna for whole-body MRI at 7T View Presentation Video Y. Gao, Q. Wang, H. Chen, X. Zhang Xidian University, Hangzhou, China Impact: Our results provided valuable insights for the design of future UHF body coil MRI systems. This approach has the potential to significantly streamline workflow and decrease RF hardware costs.
		Computer Number: 120 3461. The use of simple, wireless Lenz lens for ultra-high field preclinical MRI at 9.4 T: a preliminary result View Presentation Video C-H Choi, N. J. Shah Institute of Neuroscience and Medicine - 4, Forschungszentrum Juelich, Juelich, Germany Impact: The incorporation of a wireless and flexible Lenz lens into the existing coil results in enhanced B1 field uniformity and improved SNR in the target region of interest at ultra-high field strengths.
		Computer Number: 121 3462. Stretchable and flexible RF coils for extremity imaging in a portable, low-field MRI system. View Presentation Video J. Conejero, T. Guallart-Naval, P. García-Cristóbal, R. Bosch, E. Pallás, L. Swistunow, J. M. Algarín, J. Alonso Instituto de Instrumentación para Imagen Molecular, Valencia, Spain Impact: Compared to standard solenoids, stretchable solenoid-type coils offer enhanced image quality for in vivo extremity imaging due to proximity to the body. We therefore propose these coils for improved medical diagnosis in low-field scanners.
		Computer Number: 122 3463. Artificial dielectric waveguide for efficient traveling-wave MRI at 7T View Presentation Video Y. Gao, Z. Wen, L. Li, X. Zhang Xidian University, Hangzhou, China Impact: The promising results offer valuable insights into the design of future UHF MRI travelling-wave transmission systems.
		Computer Number: 123 3464. A layered receiver and shim coil integration on a thin film View Presentation Video H-J Lee, Y-L Tang, F-H Lin Sunnybrook Research Institute, Toronto, Canada Impact: A design of an integrated RF-shim coil over a thin film was presented to allow flexible and compact MRI signal detection with field inhomogeneity compensation. This device is expected to improve imaging with susceptibility artifacts with better sensitivity.
		Computer Number: 124 3465. Nonagonal Metamaterial-Loaded Open Waveguide for Enhanced Traveling-Wave MRI View Presentation Video S. Solis-Najera, S. Rivera de la Luz, J. Lazovic, A. Rodriguez UNAM, Mexico City, Mexico Impact: enhance travelling wave MRI approach at 7 Tesla
		Computer Number: 125 3466. Large radiation-angle leaky-wave antenna array for improved coverage and homogeneity View Presentation Video Y. Gao, Q. Wang Xidian University, Hangzhou, China Impact: The promising results offer valuable insights into the design of future UHF MRI whole-body transmission systems.
		Computer Number: 126 3467. Mode-Weighting in Metasurface Designs for MRI Signal Enhancement View Presentation Video L. Knull, R. Kowal, M. J. Hubmann, D. Düx, B. Hensen, M. Gutberlet, F. Wacker, O. Speck, H. Maune Otto-von-Guericke University, Magdeburg, Germany Impact: It is possible to improve the reception sensitivity of metasurfaces coupled to the integrated spine coil by mode-weighting and thus optimize quasi cable-free MR imaging.
		Computer Number: 127 3468. Optical Detuning Strategies for Light Coil Elements View Presentation Video J. Gerlach, Z. Liu, R. Aghabagheri, S. Liu, Ç. Ataman, M. Teymoori, M. Bock, A. Özen Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany Impact: Effective low-power optical detuning is essential for realizing fully optical receive coil designs. We compared various components and introduced new detuning networks. Results of this study are also useful for active markers used in interventional devices or implanted coils.
		Computer Number: 3469. WITHDRAWN

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