662-04-006 ISMRM Abstract

A unified fully automated 4D MRI for radiotherapy using pseudo-golden-angle radial k-space and deep-learning reconstruction

Primary: Interventional - MR-Guided Radiotherapy

Secondary: Acquisition & Reconstruction - Image Reconstruction: AI

662-04-006 · Artificial Intelligence-Based Image Reconstruction in the Body · Thursday, 14 May, 2:35 PM–3:30 PM · Digital Posters Row C

Keywords: Radiotherapy Motion Deep learning Radial sampling 4D-MRI

Accepted

Subin Erattakulangara¹, Victor Murray ¹, Victoria Yu¹, Ricardo Otazo^1,2, Can Wu¹

¹Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, United States of America

²Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, United States of America

Presenting Author: Victor Murray

Synopsis

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References

1. Stemkens, Bjorn, Eric S. Paulson, and Rob HN Tijssen. "Nuts and bolts of 4D-MRI for radiotherapy." Physics in Medicine & Biology 63, no. 21 (2018): 21TR01. DOI: https://doi.org/10.1088/1361-6560/aae56d. PMID: 30272573. [doi] [pmid]

2. Feng L, Axel L, Chandarana H, Block KT, Sodickson DK, Otazo R. XD-GRASP: Golden-angle radial MRI with reconstruction of extra motion-state dimensions using compressed sensing. Magnetic Resonance in Medicine. 2015;75(2):775-788. DOI: https://doi.org/ 10.1002/mrm.25665. PMID: 25809847. [doi] [pmid]

3. Wu C, Siddiq S, Jogi S, Murray V, and Otazo R, Online Motion-Resolved 4D MRI with Pseudo-Golden-Angle Radial Acquisition and Deep Learning Reconstruction on a 1.5T MR-Linac, (ISMRM) 2025.

4. Nario JJ, Murray V, Mekhanik A, Otazo R. RANGR: Deep Learning Autonavigation of Free-Breathing Golden-Angle Radial Abdominal MRI. Proc. Intl. Soc. Mag. Reson. Med. (ISMRM) 32. 2024.

5. Murray V, Syed S, Crane CH, et al. Movienet: Deep space–time‐coil reconstruction network without k‐space data consistency for fast motion‐resolved 4D MRI. Magnetic Resonance in Medicine. 2023;1-15. DOI: https://doi.org/10.1002/mrm.29892. PMID: 37849064. [doi] [pmid]

6. Murray V, Wu C, Otazo R. High-definition motion-resolved MRI using 3D radial kooshball acquisition and deep learning spatial-temporal 4D reconstruction. Phys Med Biol. 2025 Jun 17;70(12). DOI: 10.1088/1361-6560/ade195. PMID: 40472864. [doi] [pmid]

7. Wang, Zhou, Alan C. Bovik, Hamid R. Sheikh, and Eero P. Simoncelli. "Image quality assessment: from error visibility to structural similarity." IEEE transactions on image processing 13, no. 4 (2004): 600-612. DOI: https://doi.org/ 10.1109/TIP.2003.819861. PMID: 15376593 [doi] [pmid]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/662-04-006