A Four-Channel Broadband MRI Receive Array Coil.
A Four-Channel Broadband MRI Receive Array Coil.
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四通道宽带 MRI 接收阵列线圈。
DOI：
10.1109/embc40787.2023.10340396
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Wright,StevenM
中科院分区：
文献类型：
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作者：
Hou,Jue;Bauer,CourtneyC;Sun,Chenhao;Malone,Ben;Griffin,Jay;Wright,StevenM
RF线圈阵列结构中通常使用低阻抗去耦，以通过互阻抗最小化元件之间的耦合。陷波电路是前置放大器去耦技术中的重要组成部分，但在构建多调谐、多核线圈阵列时却成为一个限制因素。原则上，可以对陷波电路进行双调谐或多调谐，但会增加复杂性和损耗。我们提出了一种宽带去耦的方法，使用高阻抗前置放大器。一个双调谐的原型四通道阵列使用这种方法的目标2 H和23 Na在4.7T，以前已经构建，评估和报告。在不对阵列进行任何重新调谐的情况下，在3 T的23 Na和31 P频率下测试了相同的设置。初步的实验室测量和化学位移成像（CSI）的结果，获得并在本study.Clinical Relevance-这项研究可以减少多核阵列线圈设计的复杂性。
Low-impedance preamplifier decoupling is commonly used in RF coil array construction to minimize coupling between elements through mutual impedance. The trap circuit is an essential component in preamp decoupling techniques, but becomes a limiting factor in constructing multi-tuned, multi-nuclear coil arrays. In principle, it is possible to double-tune or multi-tune the trap circuits, but will add complexity and loss. We present a broadband decoupling approach using high impedance preamplifiers. A dual-tuned prototype four-channel array using this approach which targets2H and23Na at 4.7T, has been previously constructed, evaluated and reported. Without any retuning of the array, the same setup is tested at the23Na and31P frequencies for 3T. Initial bench measurements and Chemical Shift Imaging (CSI) results are acquired and presented in this study.Clinical Relevance— This study could reduce the complexity of multi-nuclear array coil design.