中文摘要：

利用透射式太赫兹时域光谱（THz-TDS）技术对猪脂肪、肌肉和皮肤三种新鲜组织的持续脱水过程进行在线连续扫描，观察太赫兹波时域谱在组织脱水过程的变化，并分析比较三种组织脱水前后的太赫兹波吸收系数及折射率的改变及差异.结果表明，太赫兹波对新鲜组织含水量的改变十分敏感，新鲜组织的含水量是影响太赫兹波吸收系数的主要因素.同时，不同组织对太赫兹的吸收有明显差异，表明太赫兹光谱技术可以鉴别不同的组织类型.本研究为太赫兹技术在生物医学领域的进一步研究和应用提供了帮助.

英文摘要：

The continuous dehydration processes of adipose, muscle and skin from pork were investigated by transmitted terahertz time-domain spectroscopy （THz-TDS）. The changes of terahertz spectroscopy during the dehydration have been observed, and the difference of absorption coefficient and refractive index at the beginning and end of the dehydration among three biological tissue samples were compared. The results show that terahertz spectroscopy is sensitive to the change of water content in the fresh tissues, and water content is the primary factor to influence the absorption coefficient of fresh tissues. Moreover, there are significant differences in the absorption of the terahertz spectroscopy for different tissues, indicates that the transmitted THz-TDS enable to distinguish different biological tissues.