ISMRM25 - Image Reconstruction, Motion Correction & Artifacts

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

Image Reconstruction, Motion Correction & Artifacts

Power Pitch

Acquisition & Reconstruction

Monday, 12 May 2025

Power Pitch Theatre 1

16:00 - 18:00

Moderators: Durga Udayakumar & Ye Tian

Session Number: PP-01

No CME/CE Credit

16:00		Screen Number: 1 0323. Feasibility of Water-Fat Separation for 2D Cardiac CINE Imaging with a Phase-Sensitive Approach on a 0.6T magnet View Presentation Video D. Wang, T. C. Chao, J. Browne, E. Ercan, M. Povazan, S. Waddle, J. Smink, T. Leiner Mayo Clinic, Rochester, United States Impact: Water and fat signals become difficult to separate with midfield MRI scanners. The presented work utilizes an EPI scan to improve scan speed of a cine series while achieving fat and water separation with the phase information.
16:02		Screen Number: 2 0324. Free-Running Time-Resolved 3D+time Cardiovascular MRI at 40 Hz in a One Minute Scan using Cartesian Sampling and CMR-MOTUS View Presentation Video T. Olausson, M. Terpstra, E. Versteeg, C. Beijst, S. M. Arshad, B. Velthuis, C. van den Berg, A. Sbrizzi University Medical Center Utrecht, Utrecht, Netherlands Impact: By extracting high-quality time-resolved 3D motion fields at a very high temporal resolution (40Hz), the entire acquisition can be leveraged in the image reconstruction, hence shorter scans. Additionally, time-resolved cardiovascular volumetric analysis is enabled i.e. time-propagating segmentations using motion fields.
16:04		Screen Number: 3 0325. Contactless Fiber-Optic Photoplethysmography-based Gating for Flow MRI. View Presentation Video S. Emery, M. Fütterer, S. Kozerke ETH and University of Zürich, Zürich, Switzerland Impact: Contact forehead-PPG offers a simple approach to cardiac gating with reduced latency relative to peripheral pulse units, potentially easing clinical workload and enhancing patient comfort.
16:06		Screen Number: 4 0326. Sensor-free physiological guidance for free-breathing cardiac cine reconstruction using CineJENSE: example of an arrhythmic patient View Presentation Video L. Quillien, M. Doguet, N. Vogt, Z. Al-Haj Hemidi, P-A Vuissoz, J. Oster IADI, INSERM U1254, Université de Lorraine, Nancy, France Impact: Sensor-free physiological signal estimations using noise variance from k-space data for free-breathing ungated cardiac cine reconstruction were shown for two examples (healthy volunteer and arrhythmic patient). Results showed good concordance with reference signals and the reconstructions could be performed.
16:08		Screen Number: 5 0327. Enhanced cardiac motion capture during respiration via RF receiver cardiac focusing with respiratory motion compensation View Presentation Video Z. Hu, H-L Lee, T. Cao, J. Finn, K-L Nguyen, A. Christodoulou David Geffen School of Medicine, UCLA, Los Angeles, United States Impact: The combination of MoCo and ROVir prioritizes modeling of cardiac motion, suppresses respiratory motion, and reduces artifacts. The improved respiratory handling from these techniques may provide an avenue for free-breathing scanning in pediatric patients with CHD.
16:10		Screen Number: 6 0328. Deep Learning-Driven ECG Synthesis from Beat Pilot Tone Signals for Physiological Monitoring and Image Reconstruction View Presentation Video H. Sun, S. Zhong, Q. Ding, P. Lee, Z. Zhang Shanghai Jiao Tong University, Shanghai, China Impact: This work explores the potential for contactless ECG monitoring during MRI, improving patient comfort and workflow. Compared to BPT-derived cardiac signals, the synthesized ECG better suits clinicians' interpretation habits, potentially enhancing physiological monitoring. Additionally, it offers sharper signals for triggering.
16:12		Screen Number: 7 0329. Evaluation of high-amplitude pilot-tone with interference cancellation (HAPTIC) cardiac gating at 0.55T in the challenging case of arrhythmia View Presentation Video B. Tasdelen, E. Yagiz, Y. Tian, K. Nayak University of Southern California, Los Angeles, United States Impact: HAPTIC could potentially replace ECG gating, even in patients with cardiac arrhythmia. This would simplify clinical workflow and serve scanners that do not have an integrated ECG.
16:14		Screen Number: 8 0330. Subspace Implicit Neural Representations for Real-Time Cardiac MR Imaging View Presentation Video W. Huang, V. Spieker, S. Xu, G. Cruz, C. Prieto, K. Hammernik, T. Küstner, D. Rueckert Technical University of Munich, Munich, Germany Impact: This method provides a novel reconstruction approach for real-time cardiac MRI with continuous radial acquisition, and will potentially reducing scan times and improving diagnostic capabilities, especially for imaging arrhythmias and characterizing beat-to-beat dynamics compared to conventional approaches.
16:16		Screen Number: 9 0331. Frequency Modulated Continuous Wave Radar-based prospective respiratory motion correction: Initial application for 2D cardiac cine MRI View Presentation Video J. Diao, Y. Ren, W. Liu, P. Liu, H. Wang, J. Zhu, J. Xu, Z. Zhou, H. Qi, P. Hu ShanghaiTech University, Shanghai, China Impact: In this study, we demonstrated that the FMCW radar signal is a suitable surrogate for motion estimation and correction. The proposed respiratory motion-correction technique shows promising potential in reducing motion artifacts in cardiac MRI.
16:18		Screen Number: 10 0332. Correction of Respiratory Motion in Free-Breathing DCE-MRI using a Pilot-Tone Coil View Presentation Video R. Zi, M. Bacher, P. Speier, R. Lattanzi, K. T. Block New York University Grossman School of Medicine, New York, United States Impact: The PT technique offers accurate detection of respiration and enables motion-weighted reconstruction to reduce motion blurring in free-breathing DCE-MRI. It is easy to use, without need to place belts or sensors when using a body coil with integrated PT transmitter.
16:20		Screen Number: 11 0333. Exploring SNR-Enhanced Reconstruction Techniques for Mesoscale Resolution BUDA-cEPI Diffusion MRI View Presentation Video A. Suwannasak, C. Liao, K. Setsompop, I. Chatnuntawech, U. Yarach Chiang Mai University, Chiang Mai, Thailand Impact: Our exploration may provide the advancement of superb and appropriate dMRI reconstruction for high-fidelity dMRI at mesoscale resolution on clinical scanners by addressing SNR challenges and preserving fine anatomical details critical for accurate diagnosis and analysis.
16:22		Screen Number: 12 0334. ACE-Net: AutofoCus-Enhanced Convolutional Network for Field Imperfection Estimation with application to high b-value spiral Diffusion MRI View Presentation Video M. Gao, Z. Shah, X. Cao, D. Abraham, N. Wang, K. Setsompop Stanford University , Stanford, United States Impact: We show accurate automatic estimation of spatiotemporal B0 and eddy field imperfections, which enables high-quality high b-value spiral diffusion imaging without additional calibration scans/field-probe measurements, should also prove useful to several other rapid imaging schemes and applications.
16:24		Screen Number: 13 0335. A Test-Retest Study of Single- and Multi-Delay pCASL for Choroid Plexus Perfusion Imaging in Healthy Subjects Aged 19 to 87 Years View Presentation Video Z. Liu, Q. Shou, K. Jann, C. Zhao, D. Wang, X. Shao University of Southern California, Los Angeles, United States Impact: Single and multi-delay ASL showed similar test-retest repeatability for measuring ChP perfusion. However, the underestimation of ATT with single-delay ASL affects the accuracy of the results. Multi-delay ASL with model-fitting analysis is recommended for measuring ChP perfusion.
16:26		Screen Number: 14 0336. Assessing the Influence of Preprocessing on the Agreement of Image Quality Metrics with Radiological Evaluation in the Presence of Motion View Presentation Video H. Eichhorn, E. Marchetto, D. Gallichan, J. Schnabel, M. Ganz Helmholtz Munich, Neuherberg, Germany Impact: This study underscores the critical role of preprocessing choices for reliable image quality evaluation. We strongly recommend documenting all preprocessing steps in future studies. Our results further demonstrate that reference-based metrics correlate more reliably with radiological assessments than reference-free metrics.
16:28		Screen Number: 15 0337. Leveraging Acquisition Knowledge to Enhance Robustness of Physics-Informed Motion Correction for T2* Quantification View Presentation Video H. Eichhorn, V. Spieker, K. Hammernik, E. Saks, L. Felsner, K. Weiss, C. Preibisch, J. Schnabel Helmholtz Munich, Neuherberg, Germany Impact: Our proposed extensions enhance PHIMO’s reconstruction performance and line detection robustness, making T2*-quantification more reliable under various motion conditions. The enhanced PHIMO reaches the performance of a state-of-the-art correction method, while accelerating the acquisition by over 40%, facilitating clinical applicability.
16:30		Screen Number: 16 0338. Navigator-Assisted Fast Motion-Compensated Brain MRI View Presentation Video J. Meineke, K. Sommer, O. Lips, J. Keupp Philips Innovative Technologies, Hamburg, Germany Impact: Making accurate and fast motion-compensated brain MRI without additional devices available will reduce costs associated with non-diagnostic images and resulting rescans.
16:32		Screen Number: 17 0339. Motion corrected MP2RAGE neonatal imaging at ultra-high field with inline reconstruction. View Presentation Video D. West, Z. Ning, A. S. Dokumaci, Y. Brackenier, L. Cordero-Grande, R. Tomi-Tricot, S. McElroy, P. Bridgen, P. Di Cio, S. Giles, I. Tomazinho, C. Da Costa, D. Gallo, A. Bonthrone, J. Cleary, T. Arichi, J. Hajnal, S. Malik King's College London, London, United Kingdom Impact: DISORDER acquisition and reconstruction significantly improves the quality of T1w neonatal imaging at 7T using MP2RAGE, as indicated by both quantitative metrics and radiological scoring. Deployment of Gadgetron-based inline DISORDER reconstruction enables scanner preview of the motion corrected 3D volumes.
16:34		Screen Number: 18 0340. Real-time quantitative MRI enabled by scanner integrated machine learning: a proof of principle with NODDI View Presentation Video S. Rot, I. Dragonu, D. Thomas, D. Alexander, H. Zhang UCL, London, United Kingdom Impact: Real-time, online qMRI parameter estimation with the presented strategy resolves a key practical barrier to clinical uptake of qMRI methods and enables their efficient integration into clinical workflows.
16:36		Screen Number: 19 0341. Deep Learning Optimization of Acquisition-Parameter and Slice-Ordering Schedule for Fast Quantitative Multi-Slice CEST View Presentation Video O. Cohen, R. Young, R. Otazo Memorial Sloan Kettering, New York, United States Impact: This work proposes a novel deep learning framework that enables simultaneous optimization of continuous and discrete scan parameters for a rapid quantitative multi-slice CEST sequence. The proposed method provides acquisition schedules that enable quantitative CEST imaging with lower error.
16:38		Screen Number: 20 0342. A High Signal-to-Interference Ratio Two-dimensional Reduced-FOV Imaging Method View Presentation Video P. Yuan, J. Zhou, C. Wang, K. Lin, P. Luo, F. Qi, L. Chen, B. Qiu University of Science and Technology of China, Hefei, China Impact: Our method integrates k-space local linear dependencies with the ROVir principle, effectively improving peripheral signal suppression in 2D rFOV imaging, enhancing SIR, and eliminating wrap-around artifacts. It can be applied in various applications, including specific organ imaging and real-time imaging.
16:40		Screen Number: 21 0343. Nex-Gen Personalized MRI: Boosting Low-Field MRI Reconstruction with a Feature-Fusion Transformer and High-Field Priors View Presentation Video T. Oved, E. Shimron Technion – Israel Institute of Technology, Haifa, Israel Impact: We introduce ViT-Fuser and the hybrid loss, a promising solution for accelerating and enhancing low-field MRI by leveraging high-field reference scans from the same subject. Our approach defines a personalized imaging strategy and outperforms state-of-the-art reconstruction methods and losses.
16:42		Screen Number: 22 0344. Efficient multi-echo steady-state imaging with spatial-resolution enhancement View Presentation Video C. Beitone, M. Chiew, K. Miller, N. Bangerter, P. Lally Imperial College London, London, United Kingdom Impact: Our proposed strategy shows promise as an efficient trade-off between high spatial-resolution, artifact minimisation, and SNR requirements, enabling efficient relaxometry and morphological imaging in a single rapid protocol.
16:44		Screen Number: 23 0345. Multi-coil multi-contrast joint reconstruction with protection from hallucination: Application to low-field MRI View Presentation Video A. Atalik, S. Chopra, D. Sodickson New York University, New York, United States Impact: MR images from different contrast weightings share substantial information. When this shared information is rigorously leveraged, high acceleration levels can be achieved, even in low-field settings, enabling efficient workflows and facilitating broader adoption.
16:46		Screen Number: 24 0346. Enhanced Volumetric Brain MRI with Simultaneous Multi-Contrast Imaging: A Spiral Spin-Echo Sequence with Localized Quadratic Encoding View Presentation Video G. Krishnamoorthy, J. Pipe University of Wisconsin, Madison, Madison, United States Impact: This MRI sequence enables high-quality, simultaneous T₂, T₂*, and PD imaging with volumetric coverage and isotropic resolution. Its optimized SNR and artifact reduction improve diagnostic accuracy and cross-contrast alignment, enhancing clinical brain imaging effectiveness.
16:48		Screen Number: 25 0347. Run-time motion and f0 control for 3D-EPI fMRI using short servo navigators View Presentation Video M. Riedel, T. Ulrich, S. Bianchi, K. Prüssmann ETH Zurich and University of Zurich, Zurich, Switzerland Impact: Servo navigation achieves run-time motion und field correction for 3D-EPI fMRI with high-precision, short navigators, and rapid on-the-fly calibration. The navigators are automatically drawn from the set imaging volume without external tracking instrumentation enabling plug-and-play motion correction for 3D fMRI.

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