In the last few years, radiofrequency ablation has become one of the most promising techniques to treat liver tumors. But radiologists have to face the difficulty of planning their treatment while only relying on 2D slices. We present here a realistic radiofrequency ablation simulation tool, coupled with a 3D reconstruction and visualization project. They help radiologists to have a better visualization of patients anatomic structures and pathologies, and allow them to easily find an adequate treatment.