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用于50mT移动乳腺磁共振成像原型的射频线圈的设计

Rongsheng Lu^1,2,3, Xiaokai Hu^1,2,3, Siyu Liu^1,2,3

¹School of Mechanical Engineering, Southeast University, Nanjing, China.

Medical physics

|December 8, 2025

概括

新的射频线圈使移动超低场磁共振成像 (MRI) 能够用于乳腺癌查. 这项创新旨在提高全球女性的MRI可访问性和早期检测率.

科学领域:

医疗成像医学成像
生物物理学的生物物理.
电气工程电气工程

背景情况:

乳腺癌是全球女性最常见的癌症.
磁共振成像 (MRI) 对密集乳房的传统方法具有优势.
高成本和MRI系统的有限可用性阻碍了广泛的乳腺癌查.

研究的目的:

开发专门的射频 (RF) 线圈用于超低场 (50mT) 移动乳房MRI.
提高MRI在乳腺癌查中的可访问性和应用.

主要方法:

设计了一种变体电磁波传输线圈,其尺寸优化以实现高均性 (>95%).
开发了一种四通道相位阵列接收线圈,该线圈优化了在垂直磁场中的灵敏度和解.
使用自主开发的50mT移动乳房MRI原型的幻影实验验验证了线圈性能.

主要成果:

发射线圈实现了3.7%不均的射频场均性.
接收线圈通道展示了最小的相互电感 (0.232 nH) 和有效解 (S12 < -25 dB).
设计的线圈表现出卓越的性能 (RL = -44.4 dB,Q = 46.55) 和验证的成像能力.

结论:

开发的射频线圈符合50mT移动MRI系统与垂直静态磁场的规格.
这项技术有望推进超低场MRI用于乳腺癌查的应用.
该系统为改善早期乳腺癌检测率提供了一个有希望的解决方案.

关键词:

射频线圈是一个RF线圈.乳房乳房乳房乳房移动核磁共振 (MRI) 是一种移动核磁共振.阶段式阵列线圈线圈超低电场的超低电场

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