Prospective motion correction for single-voxel 1H MR spectroscopy.
Prospective motion correction for single-voxel 1H MR spectroscopy.
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DOI:
10.1002/mrm.22448
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发表时间:
2010-09
影响因子:
3.3
通讯作者:
Ernst, Thomas
中科院分区:
文献类型:
--
作者:
Keating, Brian;Deng, Weiran;Roddey, J. Cooper;White, Nathan;Dale, Anders;Stenger, V. Andrew;Ernst, Thomas
Head motion during 1H MR spectroscopy (MRS) acquisitions may compromise the quality and reliability of in vivo metabolite measurements. Therefore, a 3-plane image-based motion tracking module was integrated into a single-voxel 1H MRS (PRESS) sequence. A series of 3 orthogonal spiral navigator images were acquired immediately prior to the MRS water suppression module in order to estimate head motion. By applying the appropriate rotations and translations, the MRS voxel position can be updated such that it remains stationary with respect to the brain. Frequency and phase corrections were applied during post-processing to reduce line-width and restore coherent averaging. Spectra acquired during intentional head motion in 11 volunteers demonstrate reduced lipid contamination and increased spectral reproducibility when motion correction is applied.
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影响因子:
2.2
作者:
FRAHM, J;MERBOLDT, KD;HANICKE, W
通讯作者:
HANICKE, W
影响因子:
3.3
作者:
Bhattacharyya, P. K.;Lowe, M. J.;Phillips, M. D.
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Phillips, M. D.
影响因子:
10.6
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通讯作者:
MACOVSKI, A
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3.3
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Hennig, F
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3.3
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Cline, HE;Zong, XL;Gai, N
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Gai, N