Burian M, Hájek M
MR unit, Department of Radiodiagnostics and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídenská 1958/9, 140 00, Prague, Czech Republic.
MAGMA. 2004 Dec;17(3-6):359-62. doi: 10.1007/s10334-004-0077-1. Epub 2004 Dec 1.
A new design of RF coil based on a quasi-transverse electromagnetic field is described. The coil was developed for the acquisition of MR images of the rat spinal cord at 4.7 T. Different materials for the construction of the coil were tested, and the best results were obtained with Teflon. The design of the microstrip coil enables the investigator to change the length of the coil in a longitudinal direction and yields a relatively high signal-to-noise ratio due to the restricted field of view. Low RF field penetration depth also helps in suppressing motion artifacts generated by, e.g., breathing or heartbeats.
描述了一种基于准横向电磁场的新型射频线圈设计。该线圈是为在4.7T磁场下采集大鼠脊髓的磁共振图像而开发的。测试了用于构建线圈的不同材料，使用聚四氟乙烯获得了最佳结果。微带线圈的设计使研究人员能够在纵向改变线圈的长度，并且由于视野受限而产生相对较高的信噪比。低射频场穿透深度也有助于抑制例如呼吸或心跳产生的运动伪影。
