论文标题
高介电板，以减少自配合的射频线圈中的电场和平坦的磁场用于MR成像
High Dielectric Sheet to reduce Electric Fields and Flatten Magnetic Fields in Self-decoupled Radiofrequency coils for MR Imaging
论文作者
论文摘要
高阻抗RF线圈，例如自耦线圈，减少了线圈元件之间的电磁耦合，并消除了使用复杂的去耦技术的使用。尽管高阻抗设计有望在线圈元件之间进行出色的脱钩，但它也会导致整个RF线圈的高电场，从而导致成像过程中潜在的安全问题。它还导致B1场不对称，最终导致成像定量的困难。在这项研究中，我们提出和研究使用高电介质板，以减少线圈上的电场，并在线圈元件之间实现出色的电磁脱钩，从而确保在超高磁场上更安全的MRI并保持高成像性能。
High impedance RF coils, such as self-decoupled coils, reduce the electromagnetic coupling between the coil elements and eliminates the use of complex decoupling technologies. Although the high impedance design promises excellent decoupling between the coil elements, it also results in high electric fields across the RF coil, leading to potential safety problems during imaging. It also causes B1 field asymmetry, ultimately leading to difficulties in imaging quantification. In this study, we propose and investigate using a high dielectric sheet to reduce the electric fields across the coil and achieve excellent electromagnetic decoupling among the coil elements, thereby ensuring safer MRI at ultra-high fields and maintaining high imaging performance.
