上海光源X射线成像实验站相位衬度CT初步结果  

Preliminary results for X-ray phase contrast micro-tomography on the biomedical imaging beamline at SSRF

作　　者：陈荣昌[1,2] 杜国浩[1] 谢红兰[1] 邓彪[1] 朱佩平[3] 佟亚军[1] 胡雯[1] 薛艳玲[1] 陈灿[1] 任玉琦[1] 周光照[1] 王玉丹[1] 肖体乔[1] 徐洪杰[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]Dipartimento di Fisica,Universita di Trieste e INFN,Sezione di Trieste [3]中国科学院高能物理研究所,北京100049

出　　处：《核技术》2009年第4期241-245,共5页Nuclear Techniques

基　　金：国家自然科学基金(10505028;10805071;10705020);上海市基础重点基金(3107JC14062;08JC1411900);ICTPTRIL项目资助

摘　　要：X射线相位衬度CT能获得样品内部结构的边缘增强图像,可观察到传统X射线吸收CT无法观察到的生物软组织内部微细结构,具有巨大发展潜力。经初步调试,上海光源X射线成像实验站的8-72.5keV单色X射线输出已能用于实验研究。本文在X射线成像实验站上开展生物样品(蝗虫)同轴X射线相位衬度CT研究,获得蝗虫样品的切片重构图像和三维重建图像。结果图像中,蝗虫样品的翅膀、表面纹理和内部组织分布情况清晰可见。With X-ray phase contrast micro-tomography （CT）, one is able to obtain edge-enhanced image of internal structure of the samples. This allows visualization of the fine internal features for biology tissues, which is not able to resolve by conventional absorption CT. After preliminary modulation, monochromatic X-rays （8-72.5 keV） are available for experiments on the experimental station of the biomedical imaging beamline at Shanghai Synchrotron Radiation Facility （SSRF）. In this paper, we report the in line phase contrast micro-tomography （IL-XPCT） of biology sample （locust） on the beamline. The reconstruct slice images and three dimensional rendering images of the locust were obtained, with clearly visible images of locus＇s wing, surface texture and internal tissue distribution.

关 键 词：CT 相位衬度成像 X射线 同步辐射 

分 类 号：O434.1[机械工程—光学工程] O436.1[理学—光学]