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Abstract #1418

Real Time Quantitative Temperature Imaging Allows Accurate Prediction of the Size of Radiofrequency Ablation in Rabbit Liver

Quesson B, Lepetit-Coiffe M, Seror O, Moonen C, Le Bail B, Trillaud H
CNRS/University Bordeaux 2

High quality, quantitative, temperature mapping of the rabbit liver is feasible during RF ablation allowing real time assessment of the cumulative thermal dose (TD). T1, T2 weighted, dynamic contrast enhanced imaging at day 0, 4 and 8 after MRI guided RF ablation were compared to thermal dose images using histological evaluation as the gold standard, and shown to give a systematic underestimation whereas TD maps showed high prediction accuracy. Therefore, TD maps show promise in guidance and end-point determination of RF ablation procedures.