0461 ISMRM Abstract

Combined active and passive shimming of the temporal lobes using graphite-silicone earplugs and a multi-coil B0shim array

0461 · fMRI Data Acquisition & Analysis · Wednesday, 19 May, 12:00 PM–2:00 PM · Concurrent 3

Accepted

Andrew Lithen ^1,2, Albert Tamashausky³, Berkin Bilgic^1,4, Kawin Setsompop⁵, Bryan Kennedy¹, Lilianne Mujica-Parodi^1,2, Lawrence L Wald^1,4, Shahin Nasr^1,4, Jason Stockmann^1,4

¹A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, United States of America

²Dept. of Biomedical Engineering, Stony Brook University, Stony Brook, United States of America

³Asbury Carbons, Asbury, United States of America

⁴Harvard Medical School, Boston, United States of America

⁵Dept. of Electrical Engineering, Stanford University, Stanford, United States of America

Presenting Author: Andrew Lithen

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References

1. de Graaf, R.A. and C. Juchem, CHAPTER 4 B0 Shimming Technology, in Magnetic Resonance Technology: Hardware and System Component Design. 2016, The Royal Society of Chemistry. p. 166-207.

2. Kim, T., et al., Gradient-echo EPI using a high-degree shim insert coil at 7 T: Implications for BOLD fMRI. Magnetic Resonance in Medicine, 2017. 78(5): p. 1734-1745.

3. Juchem, C., et al., Dynamic multi-coil shimming of the human brain at 7 T. J Magn Reson, 2011. 212(2): p. 280-8.

4. Stockmann, J.P., et al., A 32-channel combined RF and B0 shim array for 3T brain imaging. Magn Reson Med, 2016. 75(1): p. 441-51.

5. Wilson, J.L., M. Jenkinson, and P. Jezzard, Optimization of static field homogeneity in human brain using diamagnetic passive shims. Magn Reson Med, 2002. 48(5): p. 906-14.

6. Lee, G.C., et al., Pyrolytic graphite foam: a passive magnetic susceptibility matching material. J Magn Reson Imaging, 2010. 32(3): p. 684-91.

7. Fischbach, D.B., Diamagnetic Susceptibility of Pyrolytic Graphite. Physical Review, 1961. 123(5): p. 1613-1614.

8. Koch, K.M., et al., Sample-specific diamagnetic and paramagnetic passive shimming. J Magn Reson, 2006. 182(1): p. 66-74.

9. Stinson, M.R. and B.W. Lawton, Specification of the geometry of the human ear canal for the prediction of sound‐pressure level distribution. The Journal of the Acoustical Society of America, 1989. 85(6): p. 2492-2503.

Cite this abstract

http://echo.ismrm.org/p/ISMRM2021/0461