Miniature and integrable balun for light-weight and flexible MRI RF coils

用于轻型、灵活 MRI 射频线圈的微型、可集成巴伦

• 批准号: 10640644
• 负责人: Xinqiang Yan
• 金额: $ 8.75万
• 依托单位: VANDERBILT UNIVERSITY MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-06-01 至 2025-05-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10640644
• 关键词: Affect; Amplifiers; Anatomy; Cervical spinal cord structure; Clinical; Communities; Electromagnetics; Elements; Exhibits; Frequencies; Goals; Hand; Human; Image; Impairment; Knowledge; Magnetic Resonance Imaging; Measures; Methods; Noise; Nuclear; Outcome; Patients; Pelvis; Performance; Phase; Polychlorinated Biphenyls; Printing; Series; Shapes; Signal Transduction; Structure; Temperature; Testing; Time; Weight; design; electric impedance; experimental study; flexibility; foot; improved; interest; light weight; manufacture; microwave electromagnetic radiation; models and simulation; novel; radio frequency; simulation; transmission process

Project Summary/Abstract This proposal is to develop a miniature balun to meet the emerging meet in flexible RF coils in MRI. Flexible coils improve patient comfort and can be formed into desired shapes to match the human anatomy of interest. Therefore, compared to conventional rigid coils, they exhibit improved filling factor and signal-to-noise ratio, especially when imaging curved anatomies such as cervical spinal cord, pelvis, and hands. Although the challenges in building flexible coils have been solved with the numerous methods mentioned above, in practice, it is still an open question to make fully flexible coils since the balun or cable trap circuits associated with coils are still rigid and bulky. The first goal of this project is to theoretically analyze, build and test a miniature LC balun with a novel topology, namely LCCC balun. The second goal of this project is to integrate the LCCC balun with flexible receive-only coils and transmit/receive coils at 3T and 7T. The theoretical analysis, script for component value calculation, circuit simulation models, and PCB designs, will be distributed for open access. This miniature LCCC balun can be easily transferred to other RF coil designs, with benefits for the entire community.

项目总结/摘要 本计画旨在发展一种小型化的平衡-不平衡转换器，以满足磁振造影中的软性射频线圈需求。柔性线圈 提高患者舒适度，并可形成所需形状以匹配感兴趣的人体解剖结构。 因此，与传统的刚性线圈相比，它们表现出改善的填充因子和信噪比， 特别是当对诸如颈脊髓、骨盆和手的弯曲解剖结构成像时。虽然 制造柔性线圈的挑战已经用上述的多种方法解决了，实际上， 由于与线圈相关联的平衡-不平衡变换器或电缆陷波电路 仍然是僵硬和笨重的。本计画的第一个目标是对一小型化LC巴伦进行理论分析、制作与测试 采用一种新的拓扑结构LCCC巴伦。本项目的第二个目标是将LCCC巴伦与 柔性仅接收线圈和3 T和7 T下的发射/接收线圈。理论分析、脚本编写 价值计算，电路仿真模型和PCB设计，将分发开放获取。这种微型 LCCC巴伦可以很容易地转移到其他RF线圈设计，为整个社区带来好处。