双通道拉伸式,自调式,液体金属线圈及其制造技术
Elizaveta Motovilova1,2, Terry Ching3,4,5, Jana Vincent6
1Department of Radiology, Weill Cornell Medicine, New York, NY 10065, USA.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
研究人员开发了一种可扩展的,多元素的柔性射频线圈,用于磁共振成像. 这种新的线圈提供了改进的解剖体位和50%的信号噪声比提升,提高成像质量和患者舒适度.
科学领域:
- 医疗成像医学成像
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
背景情况:
- 灵活和可拉伸的射频 (RF) 线圈正在出现用于磁共振成像 (MRI).
- 它们的合规性质提供了更好的解剖适应性,患者舒适性和运动自由.
- 之前的工作展示了一个单元可伸缩线圈,具有自我调节几何学.
研究的目的:
- 评估将可伸缩线圈概念扩展到多元素阵列的可行性.
- 确定多元件可拉伸线圈阵列的工程和制造挑战.
- 在MRI中评估双通道伸缩线圈阵列的性能.
主要方法:
- 全波模拟,实验室测试,体外和体内成像在3T的双通道线圈阵列上进行.
- 采用了三种制造技术:单层造,双层造和直接墨水写作.
- 卷轴性能与商业膝盖卷轴阵列进行了比较.
主要成果:
- 所有制造的双通道阵列在使用类似的灵敏度图进行实验室测试时都表现相似.
- 直接墨水写作证明在制造速度,准确性,可重复性和薄度 (0.6毫米) 上是最有利的.
- 可拉伸式线圈阵列在0%到30%的拉伸中表现出极好的频率稳定性 (128±0.6MHz),并提供了50%的SNR改进.
结论:
- 将可伸缩射频线圈技术扩展到多元件阵列是可行的.
- 直接墨水写作是这些设备的优越制造方法.
- 开发的可伸缩线圈阵列提供了卓越的解剖学一致性和增强的MRI信号噪声比.
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