466-04-011 ISMRM Abstract

Using pyrolytic graphite foam to improve the shim of a neonatal head

Primary: Acquisition & Reconstruction - Artifacts and Correction Strategies

Secondary: Pediatrics - Neonatal

466-04-011 · Magnets and Shims · Tuesday, 12 May, 2:35 PM–3:30 PM · Digital Posters Row G

Keywords: B0 shimming Air-tissue interface field inhomogeneities 7T infant MRI Susceptibility artifact correction Pyrolytic Graphite

Accepted

Courtney Ormrod ^1,2,3, Simon Richardson⁴, David Leitão^1,2,3, Jo V Hajnal^1,2,3, Tomoki Arichi^1,2,3,5,6, Shaihan Malik^1,2,3

¹Research Dept of Imaging Physics & Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom

²Research Dept of Early Life Imaging, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom

³London Collaborative Ultra high field System (LoCUS), London, United Kingdom

⁴Birkbeck UCL Centre for Neuroimaging, University College London, London, United Kingdom

⁵MRC Centre for Neurodevelopmental Disorders, King's College London, London, United Kingdom

⁶Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom

Presenting Author: Courtney Ormrod

Synopsis

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References

1. Jezzard P, Balaban RS. Correction for geometric distortion in echo planar images from B0 field variations. Magn Reson Med. 1995 Jul;34(1):65-73. doi: 10.1002/mrm.1910340111. PMID: 7674900. [doi] [pmid]

2. J.L.R. Andersson, S. Skare, J. Ashburner How to correct susceptibility distortions in spin-echo echo-planar images: application to diffusion tensor imaging. NeuroImage, 20(2):870-888, 2003.

3. Lee GC, Goodwill PW, Phuong K, Inglis BA, Scott GC, Hargreaves BA, Li L, Chen AC, Shah RN, Conolly SM. Pyrolytic graphite foam: a passive magnetic susceptibility matching material. J Magn Reson Imaging. 2010 Sep;32(3):684-91. doi: 10.1002/jmri.22270. PMID: 20815067; PMCID: PMC3525090. [doi] [pmid]

4. Lee G, Jordan C, Tiet P, Ruiz C, McCormick J, Phuong K, Hargreaves B, Conolly S. Improved frequency selective fat suppression in the posterior neck with tissue susceptibility matched pyrolytic graphite foam. J Magn Reson Imaging. 2015 Mar;41(3):684-93. doi: 10.1002/jmri.24581. Epub 2014 Feb 14. PMID: 24677296. [doi] [pmid]

5. (5) Marques, J.P. and Bowtell, R. (2005), Application of a Fourier-based method for rapid calculation of field inhomogeneity due to spatial variation of magnetic susceptibility. Concepts Magn. Reson., 25B: 65-78. https://doi.org/10.1002/cmr.b.20034 [doi]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/466-04-011