Multi-slice myelin water imaging for practical clinical applications at 3.0 T.
Multi-slice myelin water imaging for practical clinical applications at 3.0 T.
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DOI:
10.1002/mrm.24527
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发表时间:
2013-09
影响因子:
3.3
通讯作者:
Reddick, Wilburn E.
中科院分区:
文献类型:
--
作者:
Guo, Junyu;Ji, Qing;Reddick, Wilburn E.
关键词:
Myelin water imaging is a promising, noninvasive technique for evaluating white matter diseases such as multiple sclerosis and other leukoencephalopathies (LE), and monitoring myelination in early childhood. Unfortunately, poor image quality and a long acquisition time are major obstacles to practical clinical applications. In this study, a novel postprocessing method with an efficient multi-slice acquisition scheme, called T2 spectrum analysis using a weighted regularized non-negative least squares algorithm and non-local mean filter (T2SPARC), is presented to overcome these obstacles and achieve a shorter acquisition time, higher image quality, and large volume coverage. In vivo results from healthy volunteers and a patient with LE showed that the T2SPARC method can generate robust and high-quality myelin water fraction (MWF) maps of 10 slices within 11 minutes. This method also yields some useful byproducts such as intra- and extracellular water fraction (IEWF) and long T2 tissue water fraction (LWF) maps, which can quantify lesions in different brain diseases.
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