6770 Real-Time Imaging Plane Control using Tip Tracking Coils and Motion Prediction

MRI-guided radio frequency ablation (RFA) is a promising technique for guiding and conducting thermal therapies such as electrophysiology (EP) procedures. Treatment efficacy, reliability, and patient safety can be greatly improved by performing real-time non-invasive temperature mapping during the procedure. However, the most commonly used MR thermometry method based on proton resonance frequency (PRF) shift, which relies on the subtraction of intra-treatment phase images from that of a pre-treatment baseline phase image, is very sensitive to motion. Previous efforts such as referenceless [1] and multi-baseline [2] methods utilize image registration and can correct for in-plane motion only with 2D imaging. Using a 3D imaging method is typically slow and computationally expensive, therefore not suitable for real-time applications. In this work, a novel method is proposed to control and update the imaging plane location in real-time based on the information obtained from catheter-based tip tracking coils and motion prediction algorithm, making the target appear stationary in the reconstructed images.