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Abstract #1763

Real-Time Hybrid MR Thermometry of Human Ventricular Myocardium with & Without Blood Suppression

Viola Rieke1, Andrew B. Holbrook1, William Grissom2, Juan M. Santos3, Michael V. McConnell4, Kim Butts Pauly1

1Department of Radiology, Stanford University, Stanford, CA, United States; 2Imaging Technologies Laboratory, GE Global Research, Munich, Germany; 3Heart Vista, Inc., Los Altos, CA, United States; 4Division of Cardiovascular Medicine, Stanford University, Stanford, CA, United States

In recent years there has been increased interest to perform cardiac interventions such as EP ablation under MR-guidance. Directly monitoring the temperature rise during these procedures could potentially be helpful to verify successful ablation and predict treatment outcome. In this study, we investigate the feasibility of monitoring temperature changes in the left ventricular myocardium in real-time using spiral imaging at 3T with varying imaging parameters with and without blood suppression. Temperature images based on the proton resonance frequency (PRF) shift are reconstructed using a hybrid method that combines multi-baseline subtraction and referenceless thermometry.