In recent surgeries, not only conventional devices such as scalpels, scissors etc. but also energy devices such as electrical scalpels are used. These devices heat biological tissue to a high temperature for incise, hemostasis, and inosculate. However, they have some problems to be solved. We have been developing energy devices by microwave energy to solve these problems. Figure 1(A) shows a scene of using developed microwave energy device for surgical treatment of a swine. In this operation, it was possible to stop bleeding promptly (B)-(D).

The electromagnetic (EM) technology is used in new portable wireless terminals and is also employed in medical field. We have developed realistic high-resolution whole-body voxel models of pregnant woman with the National Institute of Information and Communications Technology (Fig. 2(A)) and have evaluated EM energy absorption under various scenarios. (B) is the analytical model for evaluation of the EM energy absorption at a fetus in which a pregnant woman uses a tablet-type computer near the abdomen. (C) and (D) show analytical model to evaluate the EM energy absorption of a pregnant woman during a Magnetic Resonance Imaging (MRI) and an example of calculated EM energy absorption distribution, respectively.