Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
568-06-001 ISMRM Abstract

B0 Map Correction using Autofocusing for Single-Shot Spiral MRI

Primary: Acquisition & Reconstruction - Image Reconstruction: Non-AI
Secondary: Acquisition & Reconstruction - Artifacts and Correction Strategies
568-06-001 · Image Reconstruction II · Wednesday, 13 May, 4:55 PM–5:50 PM · Digital Posters Row I
Keywords: Image Reconstruction Correction algorithm Magnets (B0) Mapping B0 Inhomogeneity Deblurring
Accepted
Mayuri Sothynathan 1,2, Anthony Chu1, Corey A Baron1,3
1Centre for Functional and Metabolic Mapping, Robarts Research Institute - Western University, Canada
2Biomedical Engineering, Western University, London, Canada
3Department of Medical Biophysics, Western University, London, Canada
Presenting Author: Mayuri Sothynathan

Synopsis

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References

1. Lee Y, Wilm BJ, Brunner DO, et al. On the signal-to-noise ratio benefit of spiral acquisition in diffusion MRI. Magn Reson Med. 2021;85(4):1924-1937.
2. Yudilevich E, Stark H. Spiral sampling in magnetic resonance imaging-the effect of inhomogeneities. IEEE Trans Med Imaging. 1987;6(4):337-345.
3. Geiger Y, Tal A. Optimal echo times for multi-gradient echo-based B0 field-mapping. NMR Biomed. 2020;33(7):e4316.
4. Cheng JY, Alley MT, Cunningham CH, Vasanawala SS, Pauly JM, Lustig M. Nonrigid motion correction in 3D using autofocusing with localized linear translations. Magn Reson Med. 2012;68(6):1785-1797.
5. Ingle RR, Wu HH, Addy NO, et al. Nonrigid autofocus motion correction for coronary MR angiography with a 3D cones trajectory. Magn Reson Med. 2014;72(2):347-361.
6. Sothynathan M, Dubovan P, Baron C. Laterally Oscillating Trajectory for Undersampling Slices (LOTUS). In: ISMRM Annual Meeting. Concord, CA: ISMRM; 2025. doi:10.58530/2025/1371 [doi]
7. Baron CA, Dubovan PI. MatMRI: A GPU Enabled Package for MRI Image Reconstruction and Processing. Zenodo; 2023. doi:10.5281/ZENODO.4495476 [doi]
8. Varela-Mattatall G, Dubovan PI, Santini T, Gilbert KM, Menon RS, Baron CA. Single-shot spiral diffusion-weighted imaging at 7T using expanded encoding with compressed sensing. Magn Reson Med. 2023;90(2):615-623.
9. Ying L, Xu D, Liang ZP. On Tikhonov regularization for image reconstruction in parallel MRI. Conf Proc IEEE Eng Med Biol Soc. 2004;2004:1056-1059.

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/568-06-001