Visualization of dedicated catheters using fast scanning techniques with potential for MR-guided vascular interventions
Visualization of dedicated catheters using fast scanning techniques with potential for MR-guided vascular interventions
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DOI：
10.1002/mrm.1910360603
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发表时间：
1996-12-01
影响因子：
3.3
通讯作者：
Mali, WP
中科院分区：
文献类型：
--
作者：
Bakker, CJ;Hoogeveen, RM;Mali, WP
本文报道了用于指导血管介入手术的专用导管和实时磁共振扫描技术的发展。通过模拟实验，表明适当改变导管的磁性能使其在亚秒级二维梯度回波图像和相衬血管成像中具有明显和一致的显示效果。利用锁孔技术和有目的的后处理可以实现低至0.5 s的动态扫描时间。由此产生的扫描方案的时间分辨率和空间分辨率显示了对导管操作进行充分跟踪的希望。
This paper reports the development of dedicated catheters and real-time MR scan techniques for guiding vascular interventional procedures. By way of phantom experiments, it is shown that proper modification of the magnetic properties of catheters allows their conspicuous and consistent visualization in subsecond 2D gradient echo images and phase contrast angiograms. Dynamic scan times as low as 0.5 s could be achieved by exploiting the keyhole technique and purposeful postprocessing. The temporal resolution and spatial resolution of the resultant scan protocol shows promise for adequate tracking of catheter manipulation.