Chinese Optics Letters, Vol. 12, Issue 2, 023401 (2014)
Pseudo-global tomography for local micro-computed tomography with high-brightness synchrotron X-rays
Wenhao Chen, Yudan Wang, Huiqiang Liu, Biao Deng, Yushuang Yang, and Tiqiao Xiao
The computed tomography imaging of a local region inside a sample with a size larger than the field of view is particularly important for synchrotron X-ray imaging. In this letter, an improved algorithm is proposed to reconstruct the local structure inside a sample using almost completely local data. The algorithm significantly reduces the X-ray radiation dose and improves computational efficiency. Simulation results show that the new algorithm works well and has a higher reconstruction precision than previous methods, as confirmed by experimental results carried out at the Shanghai Synchrotron Radiation Facility.