ISMRM25 - Pulse Sequences for Body & Cardiovascular Imaging

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

Pulse Sequences for Body & Cardiovascular Imaging

Digital Poster

Acquisition & Reconstruction

Tuesday, 13 May 2025

Exhibition Hall

13:30 - 14:30

Session Number: D-14

No CME/CE Credit

		Computer Number: 33 2610. Spatiotemporal maps for dynamic MRI reconstruction: a proof-of-principle demonstration on single-coil animal gastrointestinal data View Presentation Video R. Lobos, X. Wang, Z. Liu, J. Fessler, D. Noll University of Michigan, Ann Arbor, United States Impact: Spatiotemporal maps provide a parsimonious voxel-dependent expansion for the dynamic MRI signal, even when voxels present various temporal/spectral characteristics. They can be efficiently calculated from autocalibration data, and can be synergistically combined with modern regularizers to reconstruct highly accelerated data.
		Computer Number: 34 2611. Automated streaking artifact suppression for multi-echo radial abdominal data compatible with advanced reconstruction techniques View Presentation Video B. Toner, S-F Shih, F. Han, E. Ahanonu, U. Goerke, K. Johnson, H. Wu, M. Altbach, A. Bilgin The University of Arizona, Tucson, United States Impact: The proposed destreaking method was demonstrated to be equivalent when applied to multi-coil images, multi-coil k-space, or coil sensitivity maps, providing flexibility when being incorporated into existing reconstruction algorithms. It out-performed existing techniques and improved the reconstruction of multi-echo data.
		Computer Number: 35 2612. Achieving 2D sub-millimeter images using Phase-Encoded Frequency-modulated Rabi Encoded Echoes in a B0 gradientless inhomogeneous 0.5T magnet View Presentation Video D. Pizetta, M. Mullen, P. Jenkins, E. Vidoto, M. Martins, A. Tannús, M. Garwood, E. Torres Centro de Imagens e Espectroscopia por Ressonância Magnética - CIERMag - São Carlos Physics Institute, University of São Paulo – IFSC-USP, São Carlos, Brazil Impact: 2D FREE’s results highlight the potential to enable high-resolution imaging despite large magnetic field inhomogeneities and no B₀-gradient hardware. These advancements could enable new low-cost architectures that are effective and affordable, making MRI more accessible to the world.
		Computer Number: 36 2613. Initial Experience of Carotid Artery MR Vessel Wall imaging at 5.0T Q. Wang, X. Zhao, H. Qiao, N. Xu, D. Meng Center for Biomedical Imaging Research, School of Biomedical Engineering, Tsinghua University, Beijing, China, Beijing, China Impact: This study demonstrates that 5.0T MR imaging significantly enhances carotid plaque visualization, potentially aiding clinicians in early stroke risk assessment. The findings facilitate future studies on ultra-high field MRI’s role in diagnosing vulnerable plaque, advancing preventative stroke care.
		Computer Number: 37 2614. Definition of the echo time for UTE imaging and short rectangular rf-pulses View Presentation Video M. Krämer, K-H Herrmann, J. Reichenbach Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany Impact: Results indicate that defining TE from the center of short rectangular RF pulses is more accurate, suggesting the community should adopt this TE definition for future UTE applications.
		Computer Number: 38 2615. Interleaved 2H and 31P MRSI acquisitions of the liver at 7T employing a double tuned transmit bore coil and receive body array View Presentation Video L. Stam, M. Konig, M. Gosselink, H. Hoogduin, C. Alborahal, D. Welting, J. Wijnen, D. Klomp University Medical Center Utrecht, Utrecht, Netherlands Impact: Lossless RF filters enable interleaved ³¹P and ²H MRSI acquisitions employing a double tuned bore coil and body receive array. This results in substantially improved SNR of metabolite signals from both nuclei, obtained in less examination time.
		Computer Number: 39 2616. High resolution synthetic late gadolinium enhancement based on accelerated post-contrast T1 mapping View Presentation Video J. Gao, Y. Gong, Z. Chen, H. Chen, Y. Emu, X-Y Zhang, Z. Zhou, W. Jin, S. Hua, C. Hu Shanghai Jiao Tong University, Shanghai, China Impact: The proposed method can achieve a similar accuracy in assessing myocardial scar relative to conventional LGE, while offering superior image quality, improved myocardial nulling, and an ability to simultaneously detect focal and diffuse fibrosis.
		Computer Number: 40 2617. Multi-Slice Single-Breath-Hold Cardiac CINE with Slice and Time-Dependent Deep Image Prior at 1.5T and 0.55T View Presentation Video R. De la Sotta, T. Catalán, F. Sahli-Costabal, R. Botnar, C. Prieto Millennium Institute for Intelligent Healthcare Engineering, Santiago, Chile Impact: The proposed approach enables the acquisition of multiple cardiac CINE slices in just one breath hold, both at 1.5T and 0.55T. This reduces acquisition time and thus minimizes slice misalignment for cardiac CINE exams.
		Computer Number: 41 2618. Breathing-speed quantitative motion imaging using radial acquisition and motion-subspace reconstruction View Presentation Video V. Murray, R. Otazo Memorial Sloan Kettering Cancer Center, New York City, United States Impact: Direct measurement of motion at the speed of breathing can enable the extraction of functional information and improve motion characterization for radiotherapy planning.
		Computer Number: 42 2619. Unraveling bSSFP Phase: High Quality Field and Bias Mapping View Presentation Video Y. Dong, Q-S Xiang, M. Hoff University of Washington, Seattle, United States Impact: The proposed method leverages bSSFP's SNR efficiency to generate B0 and RF receive-channel bias maps with high-SNR, smooth variation, and full FOV coverage. This enables advanced phase-sensitive reconstructions and correction of phase-related system errors without requiring additional scans.
		Computer Number: 43 2620. Fast 3D bSSFP Spine Imaging at 0.05 T View Presentation Video J. Hu, Y. Ding, S. Su, V. Lau, J. Zhang, C. Man, A. Leong, Y. Zhao, E. Wu The University of Hong Kong, Hong Kong, China Impact: An optimized bSSFP protocol at 0.05 T was successfully implemented and achieved fast C- and L-spine imaging within 4 min. This highlighted the potential of applying high-quality and fast ULF imaging in clinics.
		Computer Number: 44 2621. Active Utilization of the Magic Angle Effect to Enhance Visualization of Upper Limb Peripheral Nerves View Presentation Video R. Kurosawa, H. Yokota, T. Sada, K. Nitta, I. Nakanishi, H. Sato, K. Matsumoto, N. Takashi, Y. Masami, T. Iimori, T. Uno Department of Radiology, Chiba University Hospital, Chiba , Japan Impact: The magic angle effect enhanced neurography in qDESS improved the visualization of nerves, which has the potential to aid in diagnosing and monitoring neuropathy.
		Computer Number: 45 2622. ROVir Enables Substantially Easier Real-Time Imaging of Small Regions-of-Interest View Presentation Video C-C Chan, D. Kara, D. Kwon, E. Roselli, C. Nguyen, J. Haldar University of Southern California, Los Angeles, United States Impact: High-resolution real-time MRI over a large FOV is usually highly-undersampled and requires advanced/time-consuming reconstruction methods. We demonstrate that ROVir can be used to shrink the size of the FOV to enable a much simpler/easier reconstruction problem.
		Computer Number: 46 2623. A standardized open-source MESE sequence implemented in PyPulseq for reproducible water T2 quantification in skeletal muscle View Presentation Video J. Schäper, F. Santini, C. Weidensteiner University of Basel, Basel, Switzerland Impact: The developed vendor-independent MESE sequence offers the advantage of better transferability between different scanners. This is an important step towards better reproducibility of muscle wT2 values in patients with muscle dystrophies.
		Computer Number: 47 2624. Bipolar Flip Angle Modulated Chemical Shift Encoded Imaging Enabled with Gradient Impulse Response Function View Presentation Video J. Wang, J. Tang, D. Tamada, T. Cashen, A. Pirasteh, D. Hernando, A. McMillan University of Wisconsin-Madison, Madison, United States Impact: This study explores the application of GIRF to enable bipolar 2D-FAM for PDFF quantification. Results are comparable to conventional 3D-CSE and unipolar 2D-FAM, but yield scan time reduction, increase in R2* dynamic range, and shorter ∆TE.
		Computer Number: 48 2625. Rethinking Outer Volume Removal for Fast ECG-Triggered Anatomical Cardiac MRI View Presentation Video M. Gulle, S. Weingartner, C. Shenoy, M. Akcakaya University of Minnesota, Minneapolis, United States Impact: This work proposes a novel pulse sequence for ECG-triggered CMR sequences, along with a complementary outer volume removal approach. This simplifies the reconstruction process, facilitating higher acceleration rates high-resolution anatomical CMR with reduced artifacts and improved image clarity.

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