Digital Poster
New Devices
ISMRM & ISMRT Annual Meeting & Exhibition • 10-15 May 2025 • Honolulu, Hawai'i
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Computer Number: 129
4396. Dual-Tuned
Floating Solenoid Balun for Multi-nuclear MRI and MRS
Y. Yang, M. Lu, X. Yan
Vanderbilt University, Nashville, United States
Impact: This balun design effectively reduces the space
requirements and component count for multi-nuclei MRI and
MRS. It achieves excellent CMRR across various cable types
and can be tuned to different resonant frequencies, thereby
enhancing patient safety and maintaining signal integrity.
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Computer Number: 130
4397. A
Head-Cap RF-Coil Array to Enable Comfortable Sleep and
Concurrent TMS/EEG/fMRI
J. Maravilla, N. Khairallah, A. Arias, M. Lustig
UC Berkeley, Berkeley, United States
Impact: This Head-Cap Array could enable prolonged
overnight sleep studies and concurrent TMS/EEG/fMRI allowing
researchers to study neural dynamics during sleep, and
monitor the causal effects of TMS with minor reduction in
imaging performance.
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Computer Number: 131
4398. In
vivo Brain B1+ Inhomogeneity Correction and NOE Image
Enhancement at 7T via Flexible Metasurfaces
P. Jacobs, A. Swain, N. Wilson, W. Brink, A. Mathur, R. P.
Reddy Nanga, M. Elliott, J. Detre, R. Reddy
University of Pennsylvania, Philadelphia, United States
Impact: Metasurfaces improve metabolic NOE image quality
at 7T, making this technique more suitable for investigating
pathologies in the temporal lobes and cerebellum.
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Computer Number: 132
4399. Microwave
Pilot Tone: Coil Array with Integrated RF Mixing for Efficient
Motion Sensing
N. Khairallah, J. Maravilla, S. Anand, A. C. Arias, M.
Lustig
University of California, Berkeley, Berkeley, United States
Impact: µPT would enable efficient, higher sensitivity
to motion at arbitrary frequencies, by leveraging on-coil
mixing and minimizing cabling.
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Computer Number: 133
4400. A
passively cooled amplifier with high output current for
multi-coil shim arrays
H. E. Chew, D. Abraham, J. Rivas-Davila, K. Setsompop, J.
Stockmann
Stanford University, Stanford, United States
Impact: An MR-compatible power amplifier for multi-coil
shim arrays with 10x the bandwidth and output current
without active cooling will provide the MR community with a
key hardware component to bridge the gap between multi-coil
imaging technique development and clinical realization.
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Computer Number: 134
4401. AeroSwitch
Alternative RF Switching Mechanism to PIN Diode
B. Rangel Valle, C. Herabut, S-M Sohn
Arizona State University, Tempe, United States
Impact: By replacing PIN diodes with the AeroSwitch, RF
coils and interface circuits can significantly reduce
resistance and electrical component interference,
potentially leading to enhanced image quality and more
versatile functionality.
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Computer Number: 135
4402. Open-source,
Printed Dual-Loop RF Magnetic Field Probe for the RF Coil Lab
G. Giovannetti, N. De Zanche
National Research Council (CNR-IFC), Pisa, Italy
Impact: Dual-loop probes are frequently used for RF coil
measurements but they are not readily available
commercially. This work allows new and established labs to
obtain these probes with minimal effort. The design files
are available on Github.
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Computer Number: 136
4403. Wireless
‘Smart Cushion’ device, for head motion detection
B. Madore, J. Dubey, Y. Li, D. Willey, D. Darnell, C-C
Cheng, L. Qin
Brigham and Women's Hospital, Boston, United States
Impact: Patients have no choice but to interact with the
cushions they lie on. A wireless ‘Smart Cushion’ device,
equipped with pressure and temperature sensors, was built to
monitor head motion in a manner that would minimally impact
clinical workflows.
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Computer Number: 137
4404. MOSFETs
as High-Power DC Controlled Capacitors
B. Malone, J. Ruff, J. Bosshard, S. Wright
Texas A&M University, College Station, United States
Impact: MOSFETs as DC-controllable capacitors provide an
alternate to varactor diodes that can be employed in the
transmit chain, enabling applications such as matching
networks and effective near-zero current decoupling.
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Computer Number: 138
4405. Analog
optical wireless MRI: Proof-of-concept for RF signal transfer
and system transparency
R. Frass-Kriegl, M. Hauser, J-L Gnanago, L. Baumgartner, O.
Soanca, A. Hodul, K. Schneider-Hornstein, M. Hofbauer
Medical University of Vienna, Vienna, Austria
Impact: This work successfully demonstrates the
feasibility of analog optical wireless MRI. Signal transfer
from a receive-only RF coil to the image processing unit of
a 3T MR scanner was implemented and resulted in
artifact-free images.
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Computer Number: 139
4406. Healing
the Earth: Sustainable Radiology Practices for Environmental and
Operational Efficiency
A. Bherwani, M. Sudds, L. Townsend-Sanders
GE Healthcare, Sanford, United States
Impact: This research encourages adoption of sustainable
frameworks in radiology, contributing to a growing body of
work on healthcare sustainability. By quantifying
environmental benefits, the study provides a foundational
analysis for future investigations into sustainable
healthcare practices and their operational impacts.
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Computer Number: 140
4407. A
Wireless Endorectal Coil Based on a Near-Field Coupling Array
System for Prostate MRI
Z. Mo, E. Xiao, S. Hayat, N. Li, Q. Chen, B. Wu, X. Zhang,
Y. Li
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
Impact: The wireless endorectal prostate coil proposed
in this study offers a simple structure that enhances
clinical adaptability and patient comfort. Its
cost-effectiveness makes it suitable for disposable
applications, improving hygiene during examinations and
lowering disease transmission risks.
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Computer Number: 141
4408. Metasolenoid
resonator for controlling magnetic field in 3T MRI.
D. Tikhonenko, K. Rustomji, C. Vilmen, A. Durand, G. Nouari,
S. Enoch, D. Bendahan, R. Abdeddaim, M. Dubois
Aix Marseille Université, CNRS, Centre de Résonance Magnétique Biologique et Médicale, Marseille, France
Impact: This study validates experimentally a
metasolenoid resonator for focusing radiofrequency fields in
3T MRI, initially applied at 1.5T for breast and wrist
imaging. Our resonator reduces RF input power and could be
useful for specific 3T MRI applications.
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Computer Number: 142
4409. Current
Progress in 11.74T MRI System Development at Gachon University
Gil Medical Center
Y. Han, Y. S. Jo, Y. Ryu, K-N Kim, J-Y Chung
Gachon University, Seongnam, Korea, Republic of
Impact: This work is the successful setup of the 11.74T
MRI system and the acquisition of the first in-vivo animal
brain images. This advanced system is designed to capture
anatomical and molecular-level information, providing
insights that traditional MRI systems cannot achieve.
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Computer Number: 143
4410. An
Integrated Transceiver for Low-Power Miniaturized Field Probe
Systems
G. Mocquard, O. Bjorkqvist, K. Pruessmann, T. Burger
ETH Zurich, Zurich, Switzerland
Impact: Coupling low-power integrated electronics and
NMR field probes could allow the design of new miniaturized
systems. Those could be used in future interventional
devices or wireless field probe systems when remote
operation and data transmission will be possible.
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Computer Number: 144
4411. Toward
Ultra-High-Quality-Factor Wireless Masing MRI Sensing
E. Chekmenev, I. Adelabu, S. Nantogma, S. Fleischer, M.
Abdulmojeed, H. de Maissin, A. Schmidt, S. Lehmkuhl, M.
Rosen, S. Appelt, C. Qian, T. Theis
Wayne State University, Detroit, United States
Impact: Parametric pumping enables stimulated emission
or masing of MRI signal under virtually any conditions of
hyperpolarized media with inverted polarization, making
RASER a universal approach for sensitive detection modality
of hyperpolarized media on virtually any MRI scanner.
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