Time-resolved 3D MR angiography of the abdomen with a real-time system.
Time-resolved 3D MR angiography of the abdomen with a real-time system.
复制标题
使用实时系统对腹部进行时间分辨 3D MR 血管造影。
DOI：
10.1002/mrm.20230
复制
发表时间：
2004
影响因子：
3.3
通讯作者：
Block,WalterF
中科院分区：
文献类型：
--
作者：
Wieben,Oliver;Grist,ThomasM;Hany,ThomasF;Thornton,FrankJ;Glaser,JohnK;Skuldt,DeanH;Block,WalterF
本研究报告了在 3D 对比增强 MR 腹部血管造影的标准硬件上实施实时 MR 采集、重建和显示系统。该系统允许在一次屏气中以良好的空间分辨率对造影剂通道进行动态成像。它能够同步采集和处理多个线圈数据。通过显示具有中等空间分辨率的矢状 3D 板的 MIP 图像，可以自信地检测推注到达情况。检测到造影剂后，要求患者屏住呼吸，并开始对冠状体积进行新颖的 3D 采集。屏气内的时间成像是通过应用改进的对比动力学时间分辨成像（TRICKS）技术和椭圆中心视图排序来实现的。该技术显示从动脉期到肝静脉系统增强的对比通道。它还提供了量化长时间屏气期间隔膜运动的能力。 Magn Reson Med 52:921–926, 2004。© 2004 Wiley-Liss, Inc.
This study reports on the implementation of a real‐time MR acquisition, reconstruction, and display system on standard hardware for 3D contrast‐enhanced MR abdominal angiography. The system allows for dynamic imaging of the contrast passage with good spatial resolution in a single breathhold. It is capable of synchronously acquiring and processing multiple coil data. Bolus arrival can be detected confidently from the display of MIP images from sagittal 3D slabs with moderate spatial resolution. Upon detection of the contrast agent, the patient is asked to hold their breath and a novel 3D acquisition is started for a coronal volume. Temporal imaging within the breathhold is achieved through applying a modified time‐resolved imaging of contrast kinetics (TRICKS) technique with elliptical centric view ordering. The technique displays contrast passage from the arterial phase through enhancement of the hepatic venous system. It also provides the ability to quantify motion of the diaphragm over a long breathhold. Magn Reson Med 52:921–926, 2004. © 2004 Wiley‐Liss, Inc.