Small tip angle three-dimensional tailored radiofrequency slab-select pulse for reduced B1 inhomogeneity at 3 T
Small tip angle three-dimensional tailored radiofrequency slab-select pulse for reduced B1 inhomogeneity at 3 T
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DOI：
10.1002/mrm.20358
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发表时间：
2005-02-01
影响因子：
3.3
通讯作者：
Stenger, VA
中科院分区：
文献类型：
--
作者：
Saekho, S;Boada, FE;Stenger, VA
本文提出了一种小倾角3D定制的RF板选择脉冲，用于减少3 T下的B-1场不均匀性。补偿切片轮廓由B-1不均匀性图确定。在NiCl 2掺杂体模和人脑中评价SNR改善和伪影减少程度。该技术被发现减少不均匀性高达30%的峰值图像幅度在所有三个空间方向在大脑中使用标准的头部线圈。(C)2005 Wiley-Liss，Inc.
This work presents a small tip-angle 3D tailored RF slab-select pulse for reducing the B-1 field inhomogeneity at 3T. The compensated slice profile was determined from a B-1 inhomogeneity map. SNR improvement and degree of artifact reduction were evaluated in a NiCl2 doped phantom and human brains. The technique was found to reduce inhomogeneities as large as 30% of the peak image magnitude in all three spatial directions in the brain using a standard head coil. (C) 2005 Wiley-Liss, Inc.