A new function for accurate MR guided microwave ablation using vertically opened 0.5-T MR system

The purpose of our study is to evaluate the newly developed functions in microwave thermocoagulation therapy within a vertically oriented open MR system. The newly developed functions were to record the ablation areas in 3-dimensional space and accurate targeting the planned treatment volumes of liver tumor during procedure. Before using these functions, we could know the treatment volumes in the dynamic study of post operation. The evolved function facilitated intraoperative surgical margin evaluation and prompted additional surgical margin ablation in MR-guided microwave ablation for liver tumor. Our results demonstrate the feasibility of these functions in minimally invasive MR guided microwave thermocoagulation therapy in an open MR system.