Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition

Low Field MRI Hardware

Oral

Physics & Engineering

Wednesday, 13 May 2026

Auditorium 2

08:20 - 10:10

Moderators: Joseba Alonso & shaoying huang

Session Number: 506-01

No CME/CE Credit

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Provides an overview of recent advances in low field system design, covering magnets, gradients, shimming, RF coils and active noise cancellation

Skill Level: Intermediate

08:20		506-01-001. MCAST: Adaptive EMI Suppression via a Multi-coil Cross-Attention Spatio-Temporal Network for Unshielded Low-Field MRI Jinglei Tang, Philip Lee, Changyue Wang, Suen Chen, Zhen Ji, Yueqi Qiu, Zhiyong Zhang Shanghai Jiao Tong University, Shanghai, China Impact: MCAST introduces a unique adaptive spatio-temporal fusion approach, achieving robust EMI suppression and superior SNR improvement in completely unshielded environments. This enables practical deployment of portable low-field MRI in emergency departments, intensive care units, and resource-limited settings.
08:31		506-01-002. Battery-Powered Portable MRI For Low-Resource Settings Mary Nassejje, Luiz Guilherme Santos, Marina Fernández-García, Teresa Guallart Naval, José Algarín, Patricia Tusiime, Johnes Obungoloch, Asiimwe Robert, Joseba Alonso Institute for Molecular Imaging and Instrumentation (i3M), Consejo Superior de Investigaciones Científicas & Universitat Politècnica de València, Valencia, Spain Impact: Autonomous battery powered low-field scanners enable uninterrupted scanning and decoupling from noise sources in regions where electricity is unreliable.
08:42		506-01-003. Dedicated RF Coil Design for High-Resolution Bilateral Breast MRI at Ultra-Low Field (6.5 mT) Torben Hornung, Sheng Shen, Stephen Ogier, Mansi Saksena, Kathryn Keenan, Matthew Rosen, Neha Koonjoo Heidelberg University Hospital, Heidelberg, Germany Impact: These results establish a framework for optimizing RF coils in ultra-low-field breast MRI, enabling enhanced SNR and bilateral coverage. This supports the development of compact, accessible imaging systems for breast cancer detection and monitoring across diverse clinical settings.
08:53		506-01-004. Improved B-Field Homogeneity in Finite-Length Sparse Halbach Arrays for Low Field MRI David Roth, Tom Leadbeater, Stephen Jermy, Ernesta Meintjes University of Cape Town, Cape Town, South Africa Impact: A method to optimise $B_0$-field homogeneity over a region of interest is demonstrated. Better field homogeneity in Halbach-style magnet arrays will result in better image quality for point-of-care low-field MRI scanners.
09:04		506-01-005. External Passive Shimming of a 135 mT Halbach Magnet for a Bedside NICU MRI Scanner; A Flexible, Space-Saving Approach Sarah Altman, Monika Śliwiak, Dinank Gupta, Zi Xiong, Jeff Short, Susanna Chen, Koos Zevenhoven, Gabriel Zihlmann, Sara Bates, Camilo Jaimes, Jason Stockmann, Lawrence Wald, Clarissa Cooley Massachusetts Institute of Technology, Cambridge, United States of America Impact: This external passive shimming approach significantly reduces B0 field inhomogeneity, improving image quality and fidelity. It saves valuable bore space, affords rapid and low-cost design iteration, and can be reconfigured to suit a variety of low-field permanent magnet systems.
09:15		506-01-006. On the role of manufacturing on the performance of very low-field permanent magnet arrays Umberto Zanovello, Alessandro Arduino, Vittorio Basso, Luca Zilberti, Alessandro Sola, Andrea Agosto, Luca Toso, Lukas Winter, Oriano Bottauscio Istituto Nazionale di Ricerca Metrologica, Turin, Italy Impact: The study identified the causes of discrepancies between a designed and manufactured permanent magnet array. This knowledge may reveal to be key in designing more reliable solutions that ideally do not need B0-shimming or require it to a lesser extent.
09:26		506-01-007. Experimental Validation of a Matrix Shim Approach for B0 Field Correction and Gradient Field Synthesis at Ultra-Low Field MRI Timo Matray, Mareijn Van Dijk, Maurits Van Bree, Jules Vliem, Georgi Radulov, Irena Zivkovic Eindhoven University of Technology, Eindhoven, Netherlands Impact: This work proposes a matrix shim for B₀ field homogenization and gradient field synthesis at ultra-low-field MRI, offering a more efficient and powerful way to perform these tasks compared to the conventional principles.
09:37		506-01-008. Open-Source Modular System Control Unit for Low-Field MRI: Enabling Community-Driven Hardware Integration Jan Gregor Frintz, Christian Meumann, David Schote, Helge Herthum, Tobias Mohr, Ilia Kulikov, Lukas Winter Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Berlin, Germany Impact: This work enables researchers to integrate and expand open-source MRI hardware using a shared modular control platform. It lowers engineering barriers, fosters cross-laboratory collaboration, and enables standardized, reproducible, and safe low-field MR development.
09:48		506-01-009. Design of a One-Sided Resistive Magnet for Breast MRI Sebastian Theilenberg, Ryan Gross, Tao Li, Anja Samardzija, Troy Williams Gelobter, Yonghyun Ha, SAJAD HOSSEINNEZHADIAN, Flor Parra Rodriguez, Chenhao Sun, Heng Sun, Guang Yang, Terence Nixon, Gigi Galiana, R. Todd Constable Yale University, New Haven, United States of America Impact: MRI is a powerful tool for breast cancer diagnostics. However, siting requirements and costs of current clinical systems prevent widespread use for screening. Here, we present a resistive one-sided compact field-cycling MRI designed for breast cancer screening.
09:59		506-01-010. Design of Active Suppression System for Low-Frequency Interference Magnetic Field in ULF-MRI Equipment Sisi Qiao, Yilin Yu, Xiaolin Li, Jiajia Sun, Liu Yuhao, Jinbo Jiang Xi'an Jiaotong University, Xi'an, China Impact: This study demonstrates a zero-latency analog active cancellation system targeting low-frequency EMI (<100Hz). This enables portable, low-field MRI to achieve high-fidelity imaging in unshielded environments, removing reliance on bulky shielded rooms and advancing bedside diagnostic capabilities.