摘要
结合同轴X射线相位衬度成像(XPCI)中的Born近似相位恢复法和CT技术,实现了基于单一物像距同轴X射线相位衬度CT(IL-XPCT)投影图像的相位恢复切片重构方法。利用上海光源X射线成像及生物医学应用光束线站的单色光开展模型和生物样品(蝗虫)IL-XPCT研究。对比显示,进行相位恢复后,能获得更好的IL-XPCT重构切片和三维重建图像。实验结果表明,本方法具有用于生物活体样品三维无损成像研究的潜力。
Phase retrieval of in line X-ray phase contrast computed tomography(IL-XPCT) with Born approximations is achieved by using images recorded at single sample-to-detector distance.Experiments are carried out at X-ray imaging and biomedical application beamline,by taking a phantom and a locust as the samples.After phase retrieval,much better IL-XPCT slices and three-dimensional rendered images are obtained.The results show that the potential application of the proposed method to three-dimensional non-destructive imaging of biological samples.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第4期1106-1111,共6页
Acta Optica Sinica
基金
国家自然科学基金(10505028
10805071
10705020)
上海市基础重点基金(3107JC14062
08JC1411900)
国际理论物理中心(ICTP)意大利实验培训和研究项目(TRIL)资助课题