Single-shot spiral image acquisition with embedded z-shimming for susceptibility signal recovery - PubMed (original) (raw)
Single-shot spiral image acquisition with embedded z-shimming for susceptibility signal recovery
Hua Guo et al. J Magn Reson Imaging. 2003 Sep.
Abstract
Purpose: To efficiently and effectively recover the susceptibility-induced signal losses for functional MRI (fMRI) experiments.
Materials and methods: The signal losses near air/tissue interfaces at the ventral brain regions introduce difficulties in the neuroimaging studies concerned with brain functions such as memory, emotion, and olfaction processes. The z-shimming technique has been introduced in fMRI image acquisition to recover such losses. One significant drawback of such an approach is its time consuming nature. In this report, a single-shot spiral imaging method, which combines spiral-in and spiral-out acquisitions along with embedded z-shimming gradient, was proposed and implemented to achieve signal recovery without sacrificing temporal resolution.
Results: Using the proposed method, final images were shown in the ventral brain regions. The images were acquired with a throughput of 16 slices/second and demonstrated effectiveness and efficiency in signal recovery near air/tissue interfaces.
Conclusion: Uniform recovery can be achieved efficiently near air/tissue interfaces where susceptibility-induced spatial gradients are pronounced. We anticipate that our method would be well suited for fMRI studies involving the ventral brain areas.
Copyright 2003 Wiley-Liss, Inc.
Similar articles
- Single-shot dual-z-shimmed sensitivity-encoded spiral-in/out imaging for functional MRI with reduced susceptibility artifacts.
Truong TK, Song AW. Truong TK, et al. Magn Reson Med. 2008 Jan;59(1):221-7. doi: 10.1002/mrm.21473. Magn Reson Med. 2008. PMID: 18050341 - Asymmetric spin-echo (ASE) spiral improves BOLD fMRI in inhomogeneous regions.
Brewer KD, Rioux JA, D'Arcy RC, Bowen CV, Beyea SD. Brewer KD, et al. NMR Biomed. 2009 Jul;22(6):654-62. doi: 10.1002/nbm.1380. NMR Biomed. 2009. PMID: 19382109 - Iterative image reconstruction model including susceptibility gradients combined with Z-shimming gradients in fMRI.
Zhuo Y, Sutton BP. Zhuo Y, et al. Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:5721-4. doi: 10.1109/IEMBS.2009.5332669. Annu Int Conf IEEE Eng Med Biol Soc. 2009. PMID: 19963915 - Real-time functional magnetic resonance imaging: methods and applications.
Weiskopf N, Sitaram R, Josephs O, Veit R, Scharnowski F, Goebel R, Birbaumer N, Deichmann R, Mathiak K. Weiskopf N, et al. Magn Reson Imaging. 2007 Jul;25(6):989-1003. doi: 10.1016/j.mri.2007.02.007. Epub 2007 Apr 23. Magn Reson Imaging. 2007. PMID: 17451904 Review. - The effect of physiological noise in phase functional magnetic resonance imaging: from blood oxygen level-dependent effects to direct detection of neuronal currents.
Hagberg GE, Bianciardi M, Brainovich V, Cassarà AM, Maraviglia B. Hagberg GE, et al. Magn Reson Imaging. 2008 Sep;26(7):1026-40. doi: 10.1016/j.mri.2008.01.010. Epub 2008 May 13. Magn Reson Imaging. 2008. PMID: 18479875 Review.
Cited by
- Abnormal Neural Activation to Faces in the Parents of Children with Autism.
Yucel GH, Belger A, Bizzell J, Parlier M, Adolphs R, Piven J. Yucel GH, et al. Cereb Cortex. 2015 Dec;25(12):4653-66. doi: 10.1093/cercor/bhu147. Epub 2014 Jul 23. Cereb Cortex. 2015. PMID: 25056573 Free PMC article. - Neural mechanisms mediating contingent capture of attention by affective stimuli.
Reeck C, LaBar KS, Egner T. Reeck C, et al. J Cogn Neurosci. 2012 May;24(5):1113-26. doi: 10.1162/jocn_a_00211. Epub 2012 Feb 23. J Cogn Neurosci. 2012. PMID: 22360642 Free PMC article. - Where is ELSA? The early to late shift in aging.
Dew IT, Buchler N, Dobbins IG, Cabeza R. Dew IT, et al. Cereb Cortex. 2012 Nov;22(11):2542-53. doi: 10.1093/cercor/bhr334. Epub 2011 Nov 23. Cereb Cortex. 2012. PMID: 22114083 Free PMC article. - Spiral imaging in fMRI.
Glover GH. Glover GH. Neuroimage. 2012 Aug 15;62(2):706-12. doi: 10.1016/j.neuroimage.2011.10.039. Epub 2011 Oct 20. Neuroimage. 2012. PMID: 22036995 Free PMC article. Review. - Nucleus accumbens mediates relative motivation for rewards in the absence of choice.
Clithero JA, Reeck C, Carter RM, Smith DV, Huettel SA. Clithero JA, et al. Front Hum Neurosci. 2011 Aug 30;5:87. doi: 10.3389/fnhum.2011.00087. eCollection 2011. Front Hum Neurosci. 2011. PMID: 21941472 Free PMC article.
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources
Medical