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Abstract #4159

Real-Time Navigation of a Catheter with Ferromagnetic Tip in Interventional MRI

Ke Zhang1, Axel Krafft1, Reiner Umathum1, Florian Maier1, Wolfhard Semmler1, Michael Bock1

1Medical Physics in Radiology, German Cancer Research Center, Heidelberg, Germany

Manoeuvring the interventional devices over complicated vessel branches into the target area is difficult. In this study we present a catheter with a deflectable, ferromagnetic tip and a real-time sequence for tip navigation, localization and imaging. The direction of the magnetic forces for navigation of the catheters tip is controlled via an iterative input device. The pulse sequence combines the acquisition of imaging and interleaved projection data for automatic alignment of imaging slice according to the tip position. The results from pig experiments proved that our application can help endovascular intervention to be easier, faster and safer.