マイクロ波と磁気共鳴画像のめぐり会い

概要

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We started microwave ablation therapy of liver tumors under MR image guidance with an open configuration MR scanner. The combination of these two was quite feasible. At the beginning, preparations of MR compatible electrodes and a noise-eliminating filter were required. After the measurements against the noise, microwave irradiation did not disturb MR images and temperature changes could be monitored using MR temperature maps, which were useful for the real-time evaluation of therapeutic effects. In addition, MR temperature maps could be used to investigate the condition of microwave ablation with newly developed instruments and applications. The encounter of microwave ablation with MR imaging made a breakthrough in the image-guided minimally invasive therapy. Further developments of new technologies for therapeutic procedures are expected from this combination.