Alley M T, Grist T M, Swan J S
Department of Radiology, University of Wisconsin-Madison, USA.
Magn Reson Med. 1995 Aug;34(2):260-7. doi: 10.1002/mrm.1910340218.
A phased-array coil was developed to facilitate imaging the vasculature of the lower extremities. The array consists of four surface coils placed in a Plexiglas "I-beam" frame that are configured to allow bilateral studies with up to a 40-cm field of view (FOV). Data from phantoms indicate an increase in signal-to-noise ratio (SNR) in the regions of interest by an average factor of 2.8 +/- 0.9 over that of the body coil. Preliminary in vivo data have also been obtained from n = 8 subjects and demonstrate significant improvements in image quality. The coil design described here should lead to reduced scan times through the ability to image both legs simultaneously with less need for patient repositioning.
开发了一种相控阵线圈，以方便对下肢血管系统进行成像。该阵列由放置在有机玻璃“I形梁”框架中的四个表面线圈组成，其配置允许进行双侧研究，视野（FOV）可达40厘米。来自模体的数据表明，感兴趣区域的信噪比（SNR）比体线圈平均提高了2.8 +/- 0.9倍。还从n = 8名受试者获得了初步体内数据，结果表明图像质量有显著改善。此处描述的线圈设计应能通过同时对双腿成像且减少患者重新定位的需求来缩短扫描时间。
