Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition

Interventional MRI: General

Digital Poster

Interventional

Wednesday, 13 May 2026

Digital Posters Row E

09:15 - 10:10

Session Number: 564-02

No CME/CE Credit

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This digital poster session presents a broad range of techniques and innovations in interventional MRI. Topics span device development, real‑time imaging methods, workflow optimization, and MR‑guided therapeutic approaches that advance precision and safety in image‑guided interventions.

		564-02-001. 3D MR thermometry using bi-directional segmented EPI for transcranial focused ultrasound Michael Malmberg, Seong-Eun Kim, John Roberts, Lubdha Shah, Dennis Parker, Henrik Odéen University of Utah, Salt Lake City, United States of America Impact: This work demonstrates clinically feasible 3D MR thermometry using a segmented EPI sequence, achieving ±1 °C accuracy, volumetric coverage, and compatibility with existing HIFU workflows, potentially enabling faster, safer, and more complete monitoring of transcranial focused ultrasound treatments.
		564-02-002. Combined-echo Helical Stack-of-Stars Imaging for Rapid Magnetic Resonance Temperature Imaging Michael Malmberg, Henrik Odéen, Dennis Parker University of Utah, Salt Lake City, United States of America Impact: This work demonstrates the ability of combined-echo HSOS to dramatically reduce the temporal footprint of SOS imaging to obtain high fidelity PRFS temperature curves. This enables accurate rapid dynamic temperature imaging with arbitrarily high temporal resolution.
		564-02-003. Combined-echo Helical Stack-of-Stars Imaging for Acoustic Radiation Force Imaging Michael Malmberg, Dennis Parker, Henrik Odéen University of Utah, Salt Lake City, United States of America Impact: We implement a non-Cartesian Helical Stack of Stars ARFI acquisition and show similar displacement sensitivity and precision to EPI. With the incoherent noise properties of non-Cartesian acquisitions, this work provides an acquisition suitable for further denoising towards in vivo ARFI.
		564-02-004. A switching system for dual mode transcranial magnetic stimulation and MR image encoding array: a feasibility study Keren Zhu, Yixin Ma, Donald Straney, Mohammad Daneshzand, Lincoln Craven-Brightman, Lucia Navarro de Lara, Evgenii Kim, Lawrence Wald, Berkin Bilgic, Susie Huang, Aapo Nummenmaa, Jason Stockmann Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, United States of America Impact: The hybrid TMS/MRI set-up using the proposed switching system, when constructed in an array formation, opens new avenues to implement advanced image encoding strategies to elucidate mechanism of TMS leading to improved clinical efficacy through personalized protocols.
		564-02-005. Magnetic Resonance Measurement of Oblique Ultrasound Nathan Thyberg, Davi Cavinatto, Katia Oler, Hyrum Mangum, Elijah Oxborrow, Steven Allen Brigham Young University, Provo, United States of America Impact: This work increases the viability of MR-based pressure quantification as a method of directly monitoring focused ultrasound neuromodulation by removing the requirement of bore-axis ultrasound propagation; allowing for flexibility in system integration and use.
		564-02-006. Extended Kalman Filter-Based MR Thermometry with Real-Time T2* Compensation in Fatty Tissues Yiwen Wang, Wushi Shao, Yi Xiao, Yuan Lian, Rui Guo, Juanhua Zhang, Wenbo Lyu, Zheng-yu Lin, Hua Guo Tsinghua University, Beijing, China Impact: Our method enables accurate real-time Proton Resonance Frequency (PRF) thermometry in fatty tissues during ablation. This can help clinicians monitor ablation accurately for safe dose control. Researchers can study heat deposition dynamics and optimize protocols obscured by fat contents.
		564-02-007. Simultaneous T1-based and PRFS Thermometry with Multi-Echo MP2RAGE sequence Koen Custers, Mathijs Kikken, Ettore Flavio Meliado, Cornelis van den Berg, Josien Pluim, Alexander Raaijmakers University Medical Center Utrecht, Utrecht, Netherlands Impact: This method enhances MR thermometry by combining PRFS and T1-based mapping in a single acquisition. It enables in-vivo calibration of the T1-based method while, after calibration, agreement between both measurements will reinforce one another.
		564-02-008. An Acquisition and Reconstruction Approach for Closed Loop Transcranial focused Ultrasound Stimulation Navigation Shota Hodono, David Norris Radboud University, Nijmegen, Netherlands Impact: Using a distortion free DW-HASTE for MR-Acoustic Radiation Force Imaging (ARFI) acquisition with OpenRecon integration, transcranial focused ultrasound (TUS) focal point map can be reconstructed immediately after the scan, enabling closed-loop TUS neuronavigation.
		564-02-009. 3D Displacement Vector Field Imaging for TUS cross-beam localization Shota Hodono, Martijn Cloos, David Norris Radboud University, Nijmegen, Netherlands Impact: Three-Dimensional Displacement Vector Field Imaging enables visualization of tissue displacement induced by cross-beam transcranial focused ultrasound. Instead of predicting the complicated pressure wave interactions from two transducers independently, encoding the displacements as 3D vectors is recommended for precise neuronavigation.
		564-02-010. UTE/ZTE MRI-derived Synthetic CT for Transcranial Focused Ultrasound Planning: Validation in Non-Human Primates and Humans Dong Liu, Zhuoyao Xin, Sergio Jimenez Gambin, Fotis Tsitsos, Kay Igwe, Jinfu Niu, Elisa Konofagou, Vincent Ferrera, Jia Guo Columbia University, New York, United States of America Impact: A UTE/ZTE MRI–driven, multi-task 3D Mamba model delivers synthetic CT for accurate, MRI-only tFUS planning in both non-human primates and humans, providing a unified, cross-species pipeline validated by image and acoustic agreement and ready for translational studies.
		564-02-011. Validation of Quantitative MR-ARFI for Acoustic Dosimetry in Transcranial Ultrasound Stimulation Kristen Zarcone, Charles Caskey, William Grissom Case Western Reserve University, Cleveland, United States of America Impact: MR-ARFI currently only provides quantitative maps of displacement from the ARF. Measured displacement maps are related to acoustic intensity via a tissue mechanical response. We developed a model to reconstruct focal intensity using only MR-ARFI images.
		564-02-012. Design of Magnet Configurations for a 0.55 T Superconducting MRI System for MRI-Guided Upright Particle Therapy Francesca Vacca, Philipp Amrein, Sebastian Klüter, Stefan Röll, Jürgen Debus, Mark Ladd, Thomas Fiedler Heidelberg University Hospital, Heidelberg, Germany Impact: Open MRI magnets with large apertures would be suitable for MRI-guided upright particle therapy, accommodating the subject either in the bore or in the gap. Our results suggest that widening the gap requires more superconducting material than widening the bore.
		564-02-013. Impedance-Based Monitoring and Mitigation of RF-Induced Heating in DBS Electrodes During MRI: An In Vivo Validation Study Berk Silemek, Nur Izzati Huda Zulkarnain-Lemke, Yigitcan Eryaman Impact: This work addresses the critical in vivo validation of impedance-based thermometry using deep brain stimulation implants. It translates a phantom-proven method one step closer to clinical adoption, enabling rapid and patient-specific MRI access for deep brain stimulation patients.
		564-02-014. TFI vs LBV for susceptibility artifact correction during MR thermometry monitored mild RF hyperthermia in soft tissue sarcoma Marianne Goeger-Neff, Spyridon Karkavitsas, Benjamin Zilles, Olaf Dietrich, Christof Boehm, Dimitrios Karampinos, Lars Lindner, Mingming Wu LMU Klinikum Munich, München, Germany Impact: By comparing TFI and LBV susceptibility correction in MR thermometry-monitored mild RF-hyperthermia in soft tissue sarcomas in the thigh and pelvis, this study aims to establish the most reliable approach for artifact and drift compensation, improving accuracy and clinical robustness.
		564-02-015. Clinical Detectability of Radiotherapy Targets Using 0.5T and 1.5T MR Simulators: A Comparative Evaluation Brige Chugh, Lori Holden, Liam S.P. Lawrence, Mark Chiew, Arjun Sahgal, Jay Detsky, Angus Lau Sunnybrook Research Institute, Toronto, Canada Impact: This study supports the clinical viability of low-field MRI for radiotherapy planning, potentially expanding access to MRI-guided treatment. It prompts further investigation into optimization techniques for low-field imaging and its broader integration into precision oncology workflows.