ISMRM25 - Quantitative Imaging

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

Quantitative Imaging

Oral

Acquisition & Reconstruction

Wednesday, 14 May 2025

323AB

08:15 - 10:15

Moderators: Kwok-Shing Chan & Mikko Nissi

Session Number: O-02

CME Credit

08:15		0810. Liver Proton Density Fat Fraction (PDFF) at 0.55T Using Locally Low-Rank Deep Learning (LLR-DL) Reconstruction View Presentation Video M. Helo, M. Nickel, S. Kannengiesser, T. Kuestner Medical Image and Data Analysis (MIDAS.lab), Department of Diagnostic and Interventional Radiology, University of Tuebingen, Tuebingen, Germany Impact: Multi-echo Dixon acquisitions with short echo times combined with iterative DL-based reconstruction using locally low-rank regularization yields high SNR images. This approach enables precise PDFF quantification and provides high-SNR R2* maps at 0.55T.
08:27		0811. Highly Accelerated T1 and T2 Mapping in Water-Unsuppressed MRSI Using Generalized Series Modeling and Deep Learning View Presentation Video Y. Li, R. Guo, Y. Zhao, W. Jin, S. Luo, K. Lu, L. Cao, Y. Li, V. Kindratenko, M. Anastasio, B. Sutton, Z-P Liang University of Illinois at Urbana-Champaign, Urbana, United States Impact: The proposed method provides a powerful multimodal imaging capability that provides tissue structural and biochemical biomarkers at the same time. This new imaging technology may enable better tissue characterization desired for various research and clinical applications.
08:39		0812. MIMOSA: Multi-parametric Imaging using Multiple-echoes with Optimized Simultaneous Acquisition for highly-efficient quantitative MRI View Presentation Video Y. Chen, Y. Jun, A. Heydari, X. Yong, H. Liu, H. Ye, B. Gagoski, B. Bilgic, S. Fujita Zhejiang University, Hangzhou, China Impact: MIMOSA enables whole-brain T1, T2, T2*, PD, QSM, para- and dia-magnetic susceptibility mapping at 1mm isotropic resolution in 3min at 3T and 750μm in 13min at 7T, achieving susceptibility source separation in a single scan for comprehensive tissue characterization.
08:51		0813. Towards Single-Shot Whole-Heart T1 Mapping Within Four Seconds View Presentation Video D. Mackner, M. Blumenthal, N. Scholand, M. Huemer, M. Schilling, V. Telezki, X. Wang, M. Uecker Graz University of Technology, Graz, Austria Impact: High resolution multi-slice $$$T_1$$$ quantification covering the whole-heart can be achieved within a short breath-hold of four seconds, which improves patient comfort, reduces motion artifacts, and improves the clinical feasibility of whole-heart $$$T_1$$$ mapping.
09:03		0814. Diffusion Tensor Imaging of Short T2 Tissues Using Quantitative Ultrashort Echo Time Double Echo Steady State (qUTE-DESS) View Presentation Video J. Park, S. Sedaghat, E. Fu, Y. Jung, L. Nardo, A. Chaudhari, H. Bang, H. Jang University of California, Davis, Sacramento, United States Impact: qUTE-DESS-based DTI may provide accurate information on collagen (via FA) and proteoglycan content (via MD) in both short and long T2 tissues throughout the joint, enabling a comprehensive assessment of musculoskeletal disorders such as osteoarthritis.
09:15		0815. Efficient mesoscale multiparametric quantitative MRI using 3D-QALAS at 7T with self-supervised learning View Presentation Video Y. Jun, S. Fujita, Y. Chen, A. Mareyam, C. Jaimes, M. Gee, B. Gagoski, B. Bilgic Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, United States Impact: We demonstrate high-fidelity mesoscale (500µm isotropic resolution) multiparametric qMRI with 3D-QALAS at 7T using self-supervised image reconstruction and parameter estimation.
09:27		0816. Saturation Recovery Chemical Shift-Encoded T1 Mapping in the Liver View Presentation Video G. Fullerton, D. Tamada, Y. Muslu, D. Hernando, S. Reeder University of Wisconsin-Madison, Madison, United States Impact: The proposed optimized acquisition strategy improves the noise performance of 2D confounder-corrected liver T1 mapping, enabling robust liver coverage (9 slices) in a 20-second breath-hold. This improves the clinical viability of confounder-corrected T1 mapping for assessing liver disease.
09:39		0817. Efficient 3D whole-heart joint T1/T1ρ-adiabatic/T2 mapping and water-fat imaging at 0.55T View Presentation Video M. Crabb, D. Si, S. Littlewood, K. Kunze, C. Prieto, R. Botnar King's College London, London, United Kingdom Impact: 3D whole-heart T1, T1ρ-adiabatic and T2 maps and co-registered water-fat volumes with isotropic resolution for comprehensive myocardial tissue characterization can be obtained in a single scan of ~10 min at 0.55T.
09:51		0818. Comparison of Myelin Fraction Maps Acquired with mcUTE, T2 Relaxation and Magnetization Transfer View Presentation Video N. Yin, A. Rau, M. Reisert, K. Tadjalli Mehr, S. Liu, M. Helmstaedter, M. Schwabenland, U. Emir, M. Bock, A. Caglar Özen University Medical Center Freiburg, University of Freiburg, Freiburg, Germany Impact: mcUTE reliably provides whole-brain myelin fraction maps and high-resolution water-excited anatomical image data in less than 15min at a clinical MRI system. Ex vivo results showed that myelin imaging using mcUTE is highly consistent with electron microscopy.
10:03		0819. Fat quantification using a phase error-corrected cartesian acquisition with spiral profile ordering (CASPR) View Presentation Video P. Braun, J. Stelter, S. Ruschke, J. Peeters, H. Eggers, K. Weiss, D. Junker, D. Karampinos School of Medicine and Health, Technical University of Munich, Munich, Germany Impact: Prior studies have established the CASPR trajectory as an efficient and easily customizable trajectory with self-gating motion capabilities. This work is the first to use the CASPR trajectory for fat quantification, while simultaneously addressing phase error effects.

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