Development of human-body phantoms for evaluation of interaction between the human body and electromagnetic waves

从在身体附近使用的移动的通信设备的设计和开发的观点来看，高度要求评估人体对天线特性的影响。另一方面，也需要定量评估从这些设备辐射的电磁波对人体的影响。然而，不可能使用真实的人体进行实验评估。因此，不仅要建立人体的数值模型，还要建立人体的实验模型，并利用模型开发评价系统。在这样的背景下，我们开展了微波人体模体的研制工作，于1998年研制了生物组织等效微波固体模体，并提出了基于热像法的模体与微波相互作用的评价体系。此外，我们评估了SAR在人体内使用开发的体模和系统。我们还开发了人头部真实模型体模。1999年研制了以甘油为主要成分的微波生物组织等效模型，以提高微波生物组织等效模型的保存效果。此外，本文还对警用、消防、广播等领域中使用的移动的通信设备在150 MHz频率下的人体与天线的相互作用进行了评估，从而建立了人体与电磁波相互作用的简易评估体系。还可以研制出保存率高的微波生物组织等效体模。我们希望我们的结果用于评估从移动的通信设备辐射的电磁波对人体的影响。作为进一步的研究，我们的目标是我们的评估系统的高精度和我们的幻影的改善。

Evaluation of the effects of the human body on antenna characteristics has highly been demanded from the viewpoint of the design and development of mobile communication devices used near the body. On the other hand, the quantitative evaluation of the effects of the electromagnetic waves radiated from these devices on the human body has also been demanded. It is impossible, however, to conduct the experimental evaluation using the real human body. Therefore, we must produce not only the numerical human-body model but also the experimental one and develop the evaluation system using the model. Under such backgrounds, we have performed the research on the development of the human-body phantom for microwave.In 1998, we developed the biological tissue-equivalent solid phantoms for microwave and proposed the evaluation system of interaction between the phantom and microwave on the basis of thermographic method. Moreover, we evaluated the SAR inside the human body by using the developed phantom and system. We also developed the human-head real-model phantom. In 1999, the biological tissue-equivalent phantoms for microwave mainly composed of glycerin were developed to improve the preservation. Moreover, we evaluated the interaction between the human body and the antenna at 150 MHz corresponding to the mobile communication devices used in the fields of police, fire fighting and broadcast.Consequently, we could establish the simple evaluation system of interaction between the human body and the electromagnetic waves. We could also develop the biological tissue-equivalent phantom for microwave with high preservation. We would like to expect that our results is used for evaluation of the effects of the electromagnetic waves radiated from mobile communication devices on the human body. As a further study, we are aiming at the high precision of our evaluation system and the improvement of our phantoms.