Array coils for magnetic resonance imaging have been used to improve field uniformity, improve signal‐to‐noise ratios, and increase imaging speed. Alternative radio frequency (RF) coils that use metamaterials, such as loop or microstrip coils, have recently been proposed and are expected to provide better performance than the traditional RF array coils. Transmission lines (TLs) based on metamaterials are known as composite right‐ and left‐handed (CRLH) TLs, which are artificially created by adding inductances and capacitances to a common TL. CRLH TLs have a zero‐order resonance mode, wherein wave propagation is independent of the TL's electrical length. Decoupling between array elements is important for obtaining the benefits of parallel imaging. In this study, we analyze the decoupling properties between two CRLH TLs. In addition, we design a linear array of four CRLH TLs to obtain a uniform magnetic (|B1|)‐field in the axial‐ and longitudinal‐direction at 7T for the corresponding frequency of 300 MHz.

中文翻译：

---

使用复合右手/左手传输线进行磁共振成像的线性阵列排列

用于磁共振成像的阵列线圈已被用于提高场均匀性、提高信噪比和提高成像速度。最近提出了使用超材料的替代射频 (RF) 线圈，例如环形或微带线圈，并有望提供比传统 RF 阵列线圈更好的性能。基于超材料的传输线 (TL) 被称为复合右手和左手 (CRLH) TL，它是通过在普通 TL 上添加电感和电容而人工创建的。CRLH TL 具有零阶谐振模式，其中波的传播与 TL 的电长度无关。阵列元件之间的去耦对于获得并行成像的好处很重要。在这项研究中，我们分析了两个 CRLH TL 之间的解耦特性。此外，