Guo Lihan, Wang Xinke, Han Peng, Sun Wenfeng, Feng Shengfei, Ye Jiasheng, Zhang Yan
Appl Opt. 2017 May 1;56(13):F173-F178. doi: 10.1364/AO.56.00F173.
A terahertz (THz) digital holographic imaging system is utilized to investigate natural dehydration processes in three types of biological tissues, including cattle, mutton, and pork. An image reconstruction algorithm is applied to remove the diffraction influence of THz waves and further improve clarity of THz images. From THz images of different biological specimens, distinctive water content as well as dehydration features of adipose and muscle tissues are precisely distinguished. By analyzing THz absorption spectra of these samples, temporal evolution characteristics of the absorbances for adipose and muscle tissues are described and compared in detail. Discrepancies between water retention ability of different animal tissues are also discussed. The imaging technique provides a valuable measurement platform for biological sensing.
利用太赫兹（THz）数字全息成像系统研究牛、羊、猪三种生物组织的自然脱水过程。应用图像重建算法消除太赫兹波的衍射影响，进一步提高太赫兹图像的清晰度。从不同生物样本的太赫兹图像中，精确区分出脂肪组织和肌肉组织独特的含水量以及脱水特征。通过分析这些样本的太赫兹吸收光谱，详细描述并比较了脂肪组织和肌肉组织吸光度的时间演化特征。还讨论了不同动物组织保水能力的差异。该成像技术为生物传感提供了一个有价值的测量平台。
