Tracking planar orientations of active MRI needles.
Tracking planar orientations of active MRI needles.
复制标题
跟踪活动 MRI 针的平面方向。
DOI：
10.1002/jmri.20960
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Atalar,Ergin
中科院分区：
文献类型：
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作者：
Sathyanarayana,Shashank;Aksit,Pelin;Arepally,Aravind;Karmarkar,ParagV;Solaiyappan,Meiyappan;Atalar,Ergin
PurposeTo确定和跟踪的平面方向的有源介入设备，而不使用本地化RF microcoils.Materials和MethodsAn基于图像的跟踪方法，确定一个设备的方向，使用投影图像开发。实施了自动化和手动检测方案。该方法被证明在猪体内mesocaval穿刺过程中，这需要准确定位的主动transvascular针catheters.ResultsThe平面的导管使用两个投影图像确定。自动调整扫描平面以遵循导管平面，并显示其相对于先前采集的靶平面的方向。该算法有助于导航快速，准确punctuation.ConclusionUsing基于图像的技术，没有机械设计的变化，主动血管内探头的方向可以跟踪。J.磁共振Imaging 2007.© 2007 Wiley利斯公司
PurposeTo determine and track the planar orientation of active interventional devices without using localizing RF microcoils.Materials and MethodsAn image‐based tracking method that determines a device's orientation using projection images was developed. An automated and a manual detection scheme were implemented. The method was demonstrated in an in vivo mesocaval puncture procedure in swine, which required accurate orientation of an active transvascular needle catheter.ResultsThe plane of the catheter was determined using two projection images. The scan plane was adjusted automatically to follow the catheter plane, and its orientation with respect to a previously acquired target plane was displayed. The algorithm facilitated navigation for a fast and accurate puncture.ConclusionUsing image‐based techniques, with no mechanical design changes, the orientation of an active intravascular probe could be tracked. J. Magn. Reson. Imaging 2007. © 2007 Wiley‐Liss, Inc.