Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
J Magn Reson Imaging. 2011 Jul;34(1):2-12. doi: 10.1002/jmri.22469.
Methods are described for generating 3D time-resolved contrast-enhanced magnetic resonance (MR) angiograms of the hands and feet. Given targeted spatial resolution and frame times, it is shown that acceleration of about one order of magnitude or more is necessary. This is obtained by a combination of 2D sensitivity encoding (SENSE) and homodyne (HD) acceleration methods. Image update times from 3.4-6.8 seconds are provided in conjunction with view sharing. Modular receiver coil arrays are described which can be designed to the targeted vascular region. Images representative of the technique are generated in the vasculature of the hands and feet in volunteers and in patient studies.
方法介绍了一种生成手部和足部三维时变对比增强磁共振（MR）血管造影图的方法。给定目标空间分辨率和帧率，需要加速大约一个数量级或更多。这是通过二维灵敏度编码（SENSE）和同相信号（HD）加速方法的组合来实现的。在视图共享的情况下，提供了 3.4-6.8 秒的图像更新时间。描述了可以针对目标血管区域设计的模块化接收线圈阵列。在志愿者和患者研究中，在手和脚的脉管系统中生成了该技术的代表性图像。
