Measurement and automatic correction of high-order B0 inhomogeneity in the rat brain at 11.7 Tesla

Magnetic Resonance Imaging
Zhengguang ChenJun Shen

Abstract

In vivo B(0) inhomogeneity in the rat brain at 11.7 Tesla was measured and decomposed up to the fourth-order spherical harmonic terms using an automatic slice shimming routine derived from the FLATNESS method. In vivo shimming of horizontal slices showed that significant improvement in the T(2)*-weighted echo-planar imaging was achieved after correction of all first-, second- and third-order in-slice shims. For localized proton spectroscopy, reproducible, high quality data were obtained after correcting all first- and second-order shims. The measured high-order in vivo B(0) inhomogeneity in terms of spherical harmonic terms should provide a useful guide for designing shims to meet in vivo requirements.

References

Jul 1, 1991·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P Webb, A Macovski
Apr 1, 1991·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·E Schneider, G Glover
Mar 1, 1991·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S ConollyA Macovski
Aug 1, 1995·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S LiM B Smith
Jun 1, 1993·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R Gruetter
Nov 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S LiM B Smith
Jul 1, 1997·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M H Buonocore, L Gao
Aug 1, 1997·Journal of Magnetic Resonance·J Shen, D L Rothman
Nov 14, 1997·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J ShenD L Rothman
Oct 8, 1998·Journal of Magnetic Resonance·F Hennel
May 20, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·I TkácR Gruetter
Nov 26, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J ShenJ W Pan
Jul 5, 2001·IEEE Transactions on Medical Imaging·V J SchmithorstS K Holland
Feb 21, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Robin A de GraafTerence W Nixon

❮ Previous
Next ❯

Citations

Jan 22, 2009·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Jehoon YangJun Shen
Nov 28, 2006·Journal of Magnetic Resonance·Jehoon Yang, Jun Shen
Aug 1, 2009·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yan ZhangJun Shen
Mar 29, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Christoph JuchemRobin A de Graaf
May 20, 2014·NMR in Biomedicine·Christoph JuchemRobin A de Graaf
Mar 16, 2007·IEEE Transactions on Medical Imaging·Uros VovkBostjan Likar
Oct 3, 2006·Journal of Magnetic Resonance·Christoph JuchemJosef Pfeuffer
Oct 12, 2014·Medical & Biological Engineering & Computing·Mei XieYan Zhou
Jun 11, 2016·Magnetic Resonance Imaging·Saeedeh AmirmohseniCornelius Faber
Aug 10, 2011·Journal of Magnetic Resonance·Christoph JuchemRobin A de Graaf
Aug 28, 2004·Journal of Magnetic Resonance Imaging : JMRI·Jun ShenJehoon Yang
Jan 30, 2007·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Su XuJun Shen
Nov 5, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Naoyuki MiyasakaHoby P Hetherington
Sep 9, 2008·Journal of Magnetic Resonance Imaging : JMRI·Jingfei Ma
May 21, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jehoon YangJun Shen
Jul 25, 2006·Journal of Magnetic Resonance·Su Xu, Jun Shen
Feb 18, 2010·Progress in Nuclear Magnetic Resonance Spectroscopy·Su Xu, Jun Shen
Dec 17, 2011·Journal of Magnetic Resonance·Yun Xiang, Jun Shen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.