IEEE Trans Med Imaging. 2017 Jul;36(7):1449-1456. doi: 10.1109/TMI.2017.2679099. Epub 2017 Mar 7.
Magnetic particle imaging (MPI) is an emerging tomographic method that enables sensitive and fast imaging. It does not require ionizing radiation and thus may be a safe alternative for tracking of devices in the catheterization laboratory. The 3-D real-time imaging capabilities of MPI have been demonstrated in vivo and recent improvements in fast online image reconstruction enable almost real-time data reconstruction and visualization. Moreover, based on the use of different magnetic particle types for catheter visualization and blood pool imaging, multi-color MPI enables reconstruction of separate images for the catheter and the vessels from simultaneously measured data. While these are important assets for interventional imaging, MPI field generators can furthermore apply strong forces on a magnetic catheter tip. It is the aim of this paper to give a first demonstration of the combination of real-time multi-color MPI with online reconstruction and interactive field control for the application of forces on a magnetic catheter model in a phantom experiment.
磁共振粒子成像（MPI）是一种新兴的层析成像方法，可实现灵敏快速的成像。它不需要电离辐射，因此可能是在导管实验室中跟踪器械的安全替代方法。MPI 的 3D 实时成像功能已经在体内得到了证明，最近在快速在线图像重建方面的改进使得几乎可以实时地进行数据重建和可视化。此外，基于使用不同的磁性粒子类型进行导管可视化和血池成像，多色 MPI 能够从同时测量的数据中重建导管和血管的单独图像。虽然这些对于介入成像来说是重要的资产，但 MPI 场发生器还可以对磁性导管尖端施加强大的力。本文的目的是首次展示实时多色 MPI 与在线重建和交互式场控制的结合，以在体模实验中对磁性导管模型施加力。
