量度微波生物效应的实验剂量学研究进展

Research advances in experimental dosimetry of microwave bioeffects

微波剂量学是对沉积在生物体内的微波能量及其分布的物理量度。它通常用比吸收率(SAR)来表示生物效应和作为防护限值量,SAR不仅与入射微波有关,还与生物体的电特性、尺寸、形状、结构有关。本文综述了几种确定SAR的实验方法,包括能差法、电场法、测温法、量热法和热像法,并对其用途和误差来源进行了分析。

Microwave dosimetry is to quantify the magnitude and distribution of absorbed microwave energy deposited in biological subjects. The specific absorption rate （SAR） is used to describe cause-effect relationship and to make protection limit. The SAR is related not only to the incident waves but also the electrical and geometric characteristics of the subjects. In this paper some experimental techniques for determining SAR such as differential-power technique, implantable electricfield probes, temperature probe techniques, calorimetric techniques, and thermographic techniques are described. The utility and the error sources for each method are reviewed also.