X射线相衬显微层析及其在野山参特征结构的定量三维成像研究  

X-Ray Phase Contrast Micro-Tomography and Its Application in Quantitative 3D Imaging Study of Wild Ginseng Characteristic Microstructures

作　　者：叶琳琳[1,2] 薛艳玲[1] 谭海[1,2] 陈荣昌[1] 戚俊成 肖体乔[1,2] 

机构地区：[1]中国科学院上海应用物理研究所,上海201204 [2]中国科学院大学,北京100049

出　　处：《光学学报》2013年第12期365-370,共6页Acta Optica Sinica

基　　金：国家自然科学基金(11105213);国家973计划(2010CB834301)

摘　　要：将同步辐射X射线同轴相衬显微层析(PPCT)方法应用在野山参特征结构的原位无损成像研究,并利用相位吸收二重性Paganin算法(PAD-PA)实现了同步辐射X射线PPCT实验数据的相位重建和优化处理,获得了野山参草酸钙簇晶的三维显微结构、体积大小、空间分布和数量分布等定量信息。研究结果表明,PPCT方法与相位恢复算法结合可用于如野山参草酸钙簇晶这类中药材显微结构的定量研究。In situ non-destructive imaging of characteristic microstructures of wild ginseng are investigated by synchrotron radiation X-ray propagation-based phase-contrast computed tomography （PPCT）, and phase-attenuation duality Paganin algorithm （PAD-PA）, a phase retrieval algorithm, is employed to process the experimental PPCT data, and the three-dimensional imaging of wild ginseng, such as the quantitative volume, the region and number distributions of calcium oxalate are obtained. The results show that PPCT combines with PAD-PA phase retrieval algorithm is well suit for quantitative study and analysis of microstructures of traditional Chinese medicines like wild ginseng.

关 键 词：X射线光学 显微特征结构 定量显微层析 同步辐射 

分 类 号：O434.19[机械工程—光学工程] R282.5[理学—光学]