Real-Time Volumetric MR Thermometry Aided by Motion Tracking Using Tip Tracking Coils

Peng Wang¹, Orhan Unal¹

MRI-guided RF ablation is a promising method for the treatment of atrial fibrillation. Proton resonance frequency (PRF) shift MR thermometry, which has been the method of choice, is sensitive to motion. In this work, a new method utilizing information from catheter-embedded tip tracking coils and Linear Phase Model (LPM) is proposed to synthesize reference phase images for motion correction. This method utilizes 2D multi-slice acquisition to facilitate volumetric temperature monitoring of the target region. The proposed method offers advantages in the case of irregular through-plane motion and reduced computation.