Three-dimensional tailored RF pulses for the reduction of susceptibility artifacts in T(*)(2)-weighted functional MRI.
作者信息
Stenger V A, Boada F E, Noll D C
机构信息
Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
出版信息
Magn Reson Med. 2000 Oct;44(4):525-31. doi: 10.1002/1522-2594(200010)44:4<525::aid-mrm5>3.0.co;2-l.
Abstract
A three-dimensional tailored RF pulse method for reducing intravoxel dephasing artifacts in T *(2)-weighted functional MRI is presented. A stack of spirals k-space trajectory is employed to excite a disk of magnetization for small tip angles. Smaller disks with a linear through-plane phase are inserted into the disk to locally refocus regions which are normally dephased due to susceptibility variations. Numerical simulations and imaging experiments which use the tailored RF pulses are presented. Limitations of the method and improvements are also discussed.
摘要
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本文引用的文献
1
A k-space analysis of small-tip-angle excitation. 1989.
J Magn Reson. 2011 Dec;213(2):544-57. doi: 10.1016/j.jmr.2011.09.023.
2
Spiral sampling in magnetic resonance imaging-the effect of inhomogeneities.
IEEE Trans Med Imaging. 1987;6(4):337-45. doi: 10.1109/TMI.1987.4307852.
3
High-speed spiral-scan echo planar NMR imaging-I.
IEEE Trans Med Imaging. 1986;5(1):2-7. doi: 10.1109/TMI.1986.4307732.
4
A homogeneity correction method for magnetic resonance imaging with time-varying gradients.
IEEE Trans Med Imaging. 1991;10(4):629-37. doi: 10.1109/42.108599.
5
Removal of intravoxel dephasing artifact in gradient-echo images using a field-map based RF refocusing technique.
Magn Reson Med. 1999 Oct;42(4):807-12. doi: 10.1002/(sici)1522-2594(199910)42:4<807::aid-mrm25>3.0.co;2-8.
6
Simple analytic spiral K-space algorithm.
Magn Reson Med. 1999 Aug;42(2):412-5. doi: 10.1002/(sici)1522-2594(199908)42:2<412::aid-mrm25>3.0.co;2-u.
7
3D z-shim method for reduction of susceptibility effects in BOLD fMRI.
Magn Reson Med. 1999 Aug;42(2):290-9. doi: 10.1002/(sici)1522-2594(199908)42:2<290::aid-mrm11>3.0.co;2-n.
8
Removal of local field gradient artifacts in T2*-weighted images at high fields by gradient-echo slice excitation profile imaging.
Magn Reson Med. 1998 Mar;39(3):402-9. doi: 10.1002/mrm.1910390310.
9
Simulated phase evolution rewinding (SPHERE): a technique for reducing B0 inhomogeneity effects in MR images.
Magn Reson Med. 1997 Oct;38(4):615-27. doi: 10.1002/mrm.1910380416.
10
Functional MR imaging using gradient-echo echo-planar imaging in the presence of large static field inhomogeneities.
J Magn Reson Imaging. 1995 Nov-Dec;5(6):746-52. doi: 10.1002/jmri.1880050622.
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