ISMRM25 - Neither High nor Low: Mid-Field MRI

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

Neither High nor Low: Mid-Field MRI

Oral

Physics & Engineering

Tuesday, 13 May 2025

313A

15:45 - 17:45

Moderators: Matt Hall & Jana Hutter

Session Number: O-76

No CME/CE Credit

15:45		Introduction Matt Hall
15:57		0645. Low-latency real-time 3D imaging for interventional cardiovascular MRI at 0.55T View Presentation Video P. Kumar, R. Ramasawmy, A. Javed, D. Le, K. O'Brien, A. Jaimes, K. Chow, R. Lederman, K. Nayak, A. Campbell-Washburn University of Southern California, Los Angeles, United States Impact: 3D real-time imaging paired with low-latency image reconstruction and inline image display offers the potential to improve device tracking during MRI-guided cardiac interventions.
16:09		0646. A Practical Approach for Quantification of Stress/Rest Myocardial Blood Volume Reserve Using Free-breathing Ferumoxytol-enhanced MRI at 0.55T View Presentation Video H. B. Unal, S. Zeynali, E. Anttila, L. Schepers, R. Dharmakumar, D. Gross, B. Sharif Purdue University, Indianapolis, United States Impact: Proposed approach to estimate myocardial blood volume reserve appends a minor modification to conventional ferumoxytol-enhanced T1 reactivity protocol, and enables estimation of a dose-independent physiological biomarker to detect ischemia. This helps standardizing normal and abnormal values in clinical scenarios.
16:21		0647. Low acoustic noise scanning at 0.6T View Presentation Video M. Nagtegaal, Y. Dong, A. Webb, M. van Osch Leiden University Medical Center, Leiden, Netherlands Impact: We show that acoustic noise at 0.6T can be reduced to very low levels with a relatively small increase in scan time and same image quality. This can drastically improve the patient experience.
16:33		0648. Ultimate intrinsic SNR in the torso of a realistic body model View Presentation Video Y. Wang, M. May, M. Ladd, S. Orzada German Cancer Research Center (DKFZ), Heidelberg, Germany Impact: The superlinear increase exponent of uiSNR in the torso from 5 T to 14 T indicates promising potential for ultra-high field MRI in the body.
16:45		0649. Rationale and Clinical Feasibility of MRI-Guided Percutaneous Transgluteal Route In-Bore Prostate Biopsy at 0.55T View Presentation Video T. kaur, Y. Jiang, N. Seiberlich, H. Hussain, S. Wells, J. Wei, E. Caoili, V. Gulani University of Michigan, Ann Arbor, United States Impact: Percutaneous transgluteal in-bore MRI-guided prostate biopsy is effective and offers an anesthesia-sparing option aligning with existing skills of CT interventionalists.
16:57		0650. A Flexible MRI Array based on Direct-3D-Write Technology at 0.55T View Presentation Video F. Muñoz, H. Stark, T. Le, K. Nayak, Y. Khan University of Southern California, Los Angeles, United States Impact: Flexible MRI receiver arrays, created using 3D-write technology, can be made to conform to the target imaging anatomy while also offering scalability, low cost, and quick manufacturing. They are conductive enough to provide adequate SNR for effective parallel imaging.
17:09		0651. Radial PC-bSSFP 4D Flow MRI at 0.6T View Presentation Video C. McGrath, V. Vousten, P. Dirix, J. Smink, E. Ercan, P. Börnert, S. Kozerke University and ETH Zurich, Zurich, Switzerland Impact: Referenceless radial cine 3D phase-contrast balanced steady-state free precession (PC-bSSFP) enables simultaneous full coverage cine images and flow quantification during free-breathing. This method is particularly well suited for lower-field systems, taking advantage of relaxed sequence restrictions at lower field strengths.
17:21		0652. Double-Echo Single-Shot EPI for Improved MR-thermometry in the Liver at 0.55T View Presentation Video R. Mooiweer, R. Tomi-Tricot, A. Krafft, W. Majeed, R. Razavi, R. Neji, S. Roujol King's College London, London, United Kingdom Impact: Low-field MRI shows promises for image-guided therapies such as HIFU of the liver. The proposed double-echo single-shot EPI MR-thermometry sequence improved the precision of MR-thermometry in the liver at 0.55T while maintaining a high framerate.
17:33		0653. Accelerating 3D High-Resolution Brain MR Fingerprinting at 0.55T: Balanced Free-Precession meets Deep Learning View Presentation Video R. Rizzo, Z. Liu, J. Fajardo Freites, T. Griesler, J. Hamilton, Y. Jiang, N. Seiberlich University of Michigan, Ann Arbor, United States Impact: MRF-bSSFP with DIP reconstruction enables fast high-resolution 3D quantitative T1 and T2 mapping at 0.55T in 3:50min, thus potentially enabling fast synthetic generation of contrast images with good noise suppression and delineation of fine structures.

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