论文标题
脚/脚踝磁共振成像的13通道混合阵列系统的设计7T/300MHz
Design of a 13-Channel Hybrid Array System for Foot/Ankle Magnetic Resonance Imaging at 7T/300MHz
论文作者
论文摘要
由于其独特的特性，例如辐射损失，高频能力减少以及与常规线圈相比，微型条线在MR应用中使用了。在这里，我们介绍了13通道混合动力阵列的设计，该阵列由12个微带，1卷放置在脚/脚踝幻影上的半鸟笼线圈以及高介电常数材料，以覆盖7T/300MHz的受试者的最大面积。我们证明了使用电磁模拟，磁场分布，SAR性能以及阵列元素的耦合性能。这项工作为下肢MR成像提供了超高场多通道RF解决方案，具有出色的成像覆盖范围和田间均匀性。
Microstrip lines are being used in MR applications due to their unique properties, such as reduced radiation loss, high-frequency capability, and reduced perturbation of sample loading to the RF coil compared to conventional coils. Here, we present the design of the 13-channel hybrid array consisting of 12 Microstrips, 1 volume half birdcage coil placed on the foot/ankle phantom, and high permittivity materials to cover the maximum area of the subject at 7T/300MHz. We demonstrate using electromagnetic simulations, magnetic field distribution, SAR performance, and the coupling performance of the array elements. This work provides an ultrahigh field multichannel RF solution to lower extremity MR imaging with excellent imaging coverage and field uniformity.
