...
首页> 外文期刊>Magnetic resonance imaging clinics of North America >Dynamic four-dimensional MR angiography of the chest and abdomen.
【24h】

Dynamic four-dimensional MR angiography of the chest and abdomen.

机译:胸部和腹部的动态三维MR血管造影。

获取原文
获取原文并翻译 | 示例
           

摘要

Time-resolved (four-dimensional) contrast-enhanced MR angiography (CE-MRA) circumvents many of the adverse effects and limitations of conventional x-ray digital subtraction angiography. Four-dimensional CE-MRA uses improvements in gradient hardware, pulse sequences, or computational power to reduce scan times to seconds or less, allowing rapid sequential acquisitions within a single breath hold. These techniques eliminate the need for contrast bolus timing, ensure acquisition of the peak vascular phase of interest, and provide information on the dynamics of contrast arrival and hemodynamic consequences of complex vascular pathologies. This article reviews the techniques used to perform four-dimensional CE-MRA and provides an overview of how to use these techniques in CE-MRA of the chest and abdomen.
机译:时间分辨(二维)对比增强MR血管造影(CE-MRA)规避了传统X射线数字减影血管造影的许多不利影响和局限性。二维CE-MRA使用了梯度硬件,脉冲序列或计算能力方面的改进,可将扫描时间减少到几秒钟或更短,从而可以在一次屏气内快速进行连续采集。这些技术消除了对造影剂推注时间的需求,确保了对感兴趣的峰值血管相的获取,并提供了有关造影剂到达动态和复杂血管病变的血液动力学后果的信息。本文介绍了用于执行三维CE-MRA的技术,并概述了如何在胸部和腹部的CE-MRA中使用这些技术。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号