In recent years, new portable wireless terminals such as smartphones and tablet-type devices have become popular through the rapid progress of wireless communication technology. The use of electromagnetic technology is also increasing in fields other than communication and broadcasting, for example in medical fields. Therefore, a wide range of age groups are naturally using electromagnetic technology; even an unborn child is occasionally exposed to electromagnetic waves. In this laboratory, we have developed realistic high-resolution whole-body voxel models of pregnant woman (Fig. A) with the National Institute of Information and Communications Technology. We have advanced so we can evaluate electromagnetic exposure under a variety of circumstances by using these models. Figure B shows the analytical model created to evaluate the electromagnetic exposure of an unborn child in a situation in which a pregnant woman uses a tablet PC near the abdomen. Figure C shows the analytical model to evaluate the electromagnetic exposure of a pregnant woman who has a Magnetic Resonance Imaging (MRI) examination. Figure D shows an example of electromagnetic exposure evaluation results in the case of an MRI examination.