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Abstract #4155

Percutaneous MR-guided Interventions Using an Optical Moiré Phase Tracking System

Urte Kägebein1, Frank Godenschweger1, Frank Wacker2, Oliver Speck1, and Bennet Hensen2

1Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg, Germany, 2Department of Radiology, Hannover Medical School, Hannover, Germany

The development of an appropriate guidance support is essential to simplify and shorten MRI guided percutaneous interventions. We present a new tracking system and sequence enabling intuitive, interactive and precise instrument navigation with the aid of an optical Moiré Phase tracking system from the inside of the MRI scanner. The system was evaluated regarding targeting error and skin to target time by experienced interventional radiologist and novice users, revealing a precise (0.99mm±0.47mm), fast (155s±62s) and simple real-time needle guidance.

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