An Improved Element Design for 64-Channel Planar Imaging
An Improved Element Design for 64-Channel Planar Imaging
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DOI：
10.1002/cmr.b.20203
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发表时间：
2011-08-01
影响因子：
0.9
通讯作者：
Mcdougall, Mary Preston
中科院分区：
文献类型：
--
作者：
Chang, Chieh-Wei;Moody, Katherine Lynn;Mcdougall, Mary Preston
近年来，对高加速磁共振成像的研究已经成为硬件和方法论领域的一个活跃的角落。在(一维)加速度的极端情况下，我们团队引入了单回波采集(SEA)成像，其中消除了对x N(读出)图像进行相位编码的需要，而是用从非常窄、长和平行的线圈阵列获得的良好局部化的空间信息来代替。实现这一点的窄线圈宽度(2 Mm)伴随着对有效成像深度的限制。本笔记介绍了元素平面阵列，其构建在与原始SEA阵列相同的8x13厘米总占地面积内，仍然可以在一维上实现完全加速，但元素设计进行了修改，以增加成像深度。这是通过降低平面对的外导电腿相对于中心导体并在远离成像视场的情况下添加几何去耦合配置来实现的。这种元件被称为双平面对，因为成像视场中的载流梯级与平面对的功能完全相同，但只是放置在两个单独的平面(在这种情况下是印刷电路板的侧面)。(C)2011年威利期刊公司概念麦根树脂B部分(麦根树脂工程)39B：159-165,2011
Investigation of highly accelerated MRI has developed into a lively corner in the hardware and methodology arena in recent years. At the extreme of (one-dimensional) acceleration, our group introduced Single Echo Acquisition (SEA) imaging, in which the need to phase encode a 64 x N(readout) image is eliminated and replaced with the well-localized spatial information obtained from an array of 64 very narrow, long, and parallel coils. The narrow coil width (2 mm) that facilitates this is accompanied by a concomitant constraint on the useful imaging depth. This note describes a 64-element planar array, constructed within the same 8 x 13 cm total footprint as the original SEA array, still enabling full acceleration in one dimension, but with an element design modified to increase the imaging depth. This was accomplished by lowering the outer conducting legs of the planar pair with respect to the center conductor and adding a geometric decoupling configuration away from the imaging field of view. The element has been called a dual-plane pair in that the current carrying rungs in the imaging FOV function exactly as the planar pair, but are simply placed in two separate planes (sides of PCB in this case). (C) 2011 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 39B: 159-165, 2011