3特斯拉下鸟笼式线圈在人体膝关节磁共振成像中的应用。
Application of a birdcage coil at 3 Tesla to imaging of the human knee using MRI.
作者信息
Peterson D M, Carruthers C E, Wolverton B L, Meister K, Werner M, Duensing G R, Fitzsimmons J R
机构信息
University of Florida Brain Institute, University of Florida, Gainesville, Florida 32610, USA.
出版信息
Magn Reson Med. 1999 Aug;42(2):215-21. doi: 10.1002/(sici)1522-2594(199908)42:2<215::aid-mrm1>3.0.co;2-8.
A transceive RF birdcage coil designed for very high field with a novel matching scheme was implemented with the specific geometry chosen for the human knee. This coil design incorporates a hinge for greater patient accessibility. Volunteer human subjects were studied using spin-echo and 3D gradient echo sequences for image acquisition. The higher signal-to-noise and improved tissue contrast obtained from this high-field system, coupled with the optimized coil design, improves visualization of the structural detail in articular cartilage, which is not seen well at conventional field strengths. This has important clinical implications, as newer medical and surgical treatments become available for the treatment of early cartilage degeneration. Magn Reson Med 42:215-221, 1999.
采用一种新颖匹配方案设计的用于超高场的收发式射频鸟笼线圈，结合为人体膝关节选择的特定几何结构得以实现。这种线圈设计包含一个铰链，以提高对患者的可及性。使用自旋回波和三维梯度回波序列对志愿者受试者进行图像采集研究。从这个高场系统获得的更高信噪比和改善的组织对比度，再加上优化的线圈设计，改善了关节软骨结构细节的可视化，而这些细节在传统场强下观察效果不佳。随着新的医学和外科治疗方法可用于早期软骨退变的治疗，这具有重要的临床意义。《磁共振医学》42:215 - 221, 1999年。
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