Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition • 09-14 May 2026

Digital Poster

Low Field Systems and Applications

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Low Field Systems and Applications
Digital Poster
Physics & Engineering
Monday, 11 May 2026
Digital Posters Row I
13:50 - 14:45
Session Number: 368-03
No CME/CE Credit
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Potpourri of low field hardware developments and applications
  Figure 368-03-001.  FENCE: A Flexible Electric Noise Cancellation Endo-shield for EMI Reduction in Low-Field MRI
Summa Cum Laude
Julia Pfitzer, Martin Uecker, Hermann Scharfetter
Graz University of Technology, Graz, Austria
Impact: We demonstrate effective EMI suppression in low-field MRI by placing a slotted shield inside the RF coil. This low-loss shielding enables retrofitting existing RF coils to enhance EMI immunity without coil replacement. We term this shield FENCE.
  Figure 368-03-002.  Imaging Cell Phone Radiation in Tissue Mimics with Hyperpolarized Low-Field MRI
Stephen Ogier, Stephen Russek, Jessica Martinez, Kaitlyn Betz, Karl Stupic, Benjamin Moser, Matthew Simons, Christopher Holloway, Joshua Biller, Deepansh Srivastava, Michael Twieg, Kathryn Keenan
National Institute of Standards and Technology, Boulder, United States of America
Impact: A method has been developed using dynamic nuclear polarization to enable low-field MRI to image magnetic fields in frequency bands used by cellular devices. This allows improved characterization of interactions between RF fields and complicated anatomical structures, including SAR estimation.
  Figure 368-03-003.  MagTetris+: A rapid simulator for magnetic field and force calculation for ferromagnetic materials and permanent magnets
Summa Cum Laude
Jing Han Heng, Wenwei Yu, Junqi Yang, shaoying huang
Singapore University of Technology and Design, Singapore, Singapore
Impact: MagTetris+ enables rapid simulations and AI-driven optimizations of magnet designs using ferromagnetic for shimming for portable MRI. Its open-source framework democratizes access to magnet simulations, empowering resource-constraint research groups globally to innovate without costly FEM simulators or high-performance computing hardware.
  Figure 368-03-004.  Design, Construction, and Characterization of a 37 mT Inward-Outward Pair Magnet for ULF Brain Imaging
Jules Vliem, Lyanne Budé, Irena Zivkovic
Eindhoven University of Technology, Eindhoven, Netherlands
Impact: This works presents an Inward-Outward (IO) pair design for portable MRI. Its longitudinal field and simpler construction may lower the barrier for developing low-cost brain scanners, improving the accessibility of MRI in remote and point-of-care environments.
  Figure 368-03-005.  Electromagnetic Compatibility of Low-Field Portable Magnetic Resonance Guided Focused Ultrasound System
Wei Huang, Zhengyuan Huang, Hai Luo, Zhikang Jiang, Tiao Li, Zhenghan Lou, Xinrong Chen
College of Biomedical Engineer, Fudan University, Shanghai, China
Impact: This work improves reliability of low-field MRgFUS by solving critical EMI challenges, benefiting patients in need of accessible neurological treatments. The underlying technology promises to enable imaging/therapy where MRI and ultrasound operate simultaneously, improving clinical utility over either working alone.
  Figure 368-03-006.  Design and evaluation of a toroidal based surface element for multi-channel array at 37.5mT MRI
Lyanne Budé, Irena Zivkovic
Eindhoven University of Technology, Eindhoven, Netherlands
Impact: A toroidal-based self-decoupled surface element for 37.5mT MRI has been identified. This coil could potentially be used for accelerated imaging in scanners with longitudinal B0-field, which results in higher SNR at shorter imaging times.
  Figure 368-03-007.  Brain Diffusion Tensor Imaging at 0.05 Tesla
Liubin Wu, Ye Ding, Xuehong Lin, Xiang Li, Shi Su, Vick Lau, Alex T. L. Leong, Yujiao Zhao, Ed X Wu
The University of Hong Kong, Hong Kong, China
Impact: This study demonstrates the feasibility of brain DTI at 0.05 T on a low-cost low-power shielding-free ULF MRI scanner using a single-shot DW EPI sequence. The results indicate the possibility of using ULF MRI in examining brain tissue microstructures.
  Figure 368-03-008.  Denoising a Low-Field MRI Electromagnet with Floating Trap Filter and Magnet Shield
Chenhao Sun, Ryan Gross, Yonghyun Ha, Tao Li, Sebastian Theilenberg, SAJAD HOSSEINNEZHADIAN, Guang Yang, Scott McIntyre, Terence Nixon, Heng Sun, Horace Zhang, Anja Samardzija, Flor Parra Rodriguez, Gigi Galiana, R. Todd Constable
Yale University, New Haven, United States of America
Impact: Electromagnet-generated B0 fields offer advantages for low-field MRI; however, amplifier-induced switching noise poses a significant challenge. This study proposes and evaluates two passive noise suppression strategies, providing new insights for low-noise low-field MR system design.
  Figure 368-03-009.  Boosting SNR in field-cycled MRI: Driven equilibrium applied to CPMG sequences
Yonghyun Ha, Anja Samardzija, Flor Parra Rodriguez, Ryan Gross, Heng Sun, Sebastian Theilenberg, Guang Yang, Tao Li, Chenhao Sun, SAJAD HOSSEINNEZHADIAN, Horace Zhang, Gigi Galiana, R. Todd Constable
Yale University, New Haven, United States of America
Impact: Applying driven equilibrium to CPMG sequences in field-cycling MRI enhances signal intensity and SNR by reusing residual transverse magnetization. This enables shorter polarization times, faster scans, and improved imaging efficiency, addressing the sensitivity limitations of field-cycling MRI.
  Figure 368-03-010.  Compact 4 MHz GaN RF Power Amplifier with Digital Phase Correction for Distributed Parallel Transmit at Low Field
Reid Bolding, Christopher Vaughn, Jacob Hannan, Jessie EP Sun, William Grissom, Mark Griswold
Case Western Reserve University, Cleveland, United States of America
Impact: A low-cost, compact RF transmitter with full-bandwidth phase correction enables practical multi-channel parallel transmit arrays for B₁-gradient encoding methods like SENF, potentially eliminating expensive B₀ gradient systems and enabling more compact, affordable, and quiet MRI systems through gradient-free spatial encoding.
  Figure 368-03-011.  Thermal Dynamics of a Low-Field Hallbach Magnet
Michael Gepperth, Fabian Bschorr, Tobias Haase b. Lobmeyer, Julian Schüle, Thomas Hüfken, Niklas Hoffmann, Volker Rasche
Ulm University, Medical Center, Ulm, Germany
Impact: This work highlight the topic of inhomogeneous temperature distributions and provides a quantitative basis for thermally optimized low-field MRI designs and reconstruction approaches.
  Figure 368-03-012.  Split k-space: Adaptation of EDITER for improving low-amplitude EMI correction applications
Oliver Bielik, Fabian Bschorr, Tobias Haase b. Lobmeyer, Julian Schüle, Volker Rasche
Ulm University, Medical Center, Ulm, Germany
Impact: Artefacts caused by low amplitude electromagnetic interference in open-system MRI setups can be mitigated more effectively with a variation of the EDITER model, which utilizes a split k-space to model the interference.
  Figure 368-03-013.  Self-Navigated Multi-Shot and Multiband SPEN DWI for Portable Low-Field MRI
Yueqi Qiu, Philip Lee, Ke Dai, Changyue Wang, Jinglei Tang, Zhiyong Zhang
Shanghai Jiao Tong University, Shanghai, China
Impact: Self-navigated multi-shot SPEN DWI enables inter-shot phase correction with reduced distortion, while multiband SPEN DWI increases SNR efficiency. Together, these methods demonstrate phase-corrected, low-distortion diffusion imaging on portable low-field MRI without parallel imaging.
  Figure 368-03-014.  Optimized Open-Structure RF Head Coil and Shield with Patient Comfort for Low-Field Portable MRI
Minxuan Xu, Junqi YANG, Yongxin Guo, shaoying huang
National University of Singapore, Singapore, Singapore
Impact: We developed an open-structure head coil with a meshed shield (frequency selective surface), enhancing patient comfort for low-field portable MRI. This patient-friendly design demonstrates superior performance over traditional shielded coils, balancing comfort, coil sensitivity, and shielding effectiveness.
  Figure 368-03-015.  Design and Optimization of a Pole-less 0.2 T C-Type Magnet
Ivan Etoku Oiye, Ajay Sharma, Sairam Geethanath
Johns Hopkins University School of Medicine, Baltimore, United States of America
Impact: The pole-less design, optimized manually and through a deep learning-assisted genetic algorithm, achieved a higher peak-field (203mT), slightly higher inhomogeneity (2mT), and reduced mass (640kg) compared to the pole-piece configuration with a 152mT peak-field, 1mT inhomogeneity, and weighed 820 kg
  Figure 368-03-016.  Diffusion, Short and Long - 0.064T from 16 to 60 Minutes
James Gholam, William Royer, Rafael O'Halloran, Rui Pedro Teixeira, Mara Cercignani, Derek Jones
Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom
Impact: 
We demonstrate that ultra-low-field MRI—long limited by poor SNR—can achieve clinically meaningful diffusion contrast within routine scan times. This work transforms ULF systems from point-of-care imagers into powerful tools, both for neuroscience and for global health.

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