Computer Assisted Surgery-Planning for Microwave Ablation.

A novel preoperative surgery planning method is proposed for microwave ablation. An iterative framework for necrosis field simulation and 3D necrosis zone reconstruction is introduced here. The necrosis field of the ablation is computed with an adaptable method based on surgery trajectories, and then the 3D model of the necrosis zone is reconstructed and superimposed to the patient anatomy structures using advanced visualization techniques. The full surgery planning with multiple antennae is performed by the operator in an interactively way, until the optimal surgery plan is achieved. Experiments have been performed and the actual necrosis field is measured by comparing to postoperative CT images. Results show that this method is relative accurate for preoperative trajectory plan and could be used as an assistant to the clinical practice.