[1] [1] Xiao Tiqiao, Xie Honglan, Deng Biao, et al.. Progresses of X-ray imaging methodology and its applications at shanghai synchrotron radiation facility[J]. Acta Optica Sinica, 2014, 34(1): 0100001.

[2] [2] Niu Suyun, Pan Jinxiao, Chen Ping. Multi-spectrum computed tomography imaging method based on energy spectrum filtering separation[J]. Acta Optica Sinica, 2014, 34(10):1034001.

[3] [3] Qi Juncheng, Ren Yuqi, Du Guohao, et al.. Multiple contrast micro-computed tomography system based on X-ray grating imaging[J]. Acta Optica Sinica, 2013, 33(10): 1034001.

[4] [4] Zhang Huitao, Zhang Peng. X-ray spectrum estimation method from scanning data of computed tomography phantoms[J]. Acta Optica Sinica, 2013, 33(11): 1134001.

[5] [5] Niu Xin, Zhao Gengyan, Chen Jinping, et al.. Inpainting of CT images artifacts caused by scintillation defects[J]. Journal of Optoelectronics·Laser, 2014,6: 1196-1202.

[6] [6] Gullberg G T, Tsui B, Crawford C R, et al.. Estimation of geometrical parameters for fan beam tomography[J]. Physics in Medicine and Biology, 1987, 32(12): 1581-1594.

[7] [7] Noo F, Clackdoyle R, Mennessier C, et al.. Analytic method based on identification of ellipse parameters for scanner calibration in cone-beam tomography[J]. Physics in Medicine and Biology, 2000, 45(11): 3489-3508.

[8] [8] Cao L, Breithaupt M, Peter J. Geometrical co-calibration of a tomographic optical system with CT for intrinsically co-registered imaging[J]. Physics in Medicine and Biology, 2010, 55(6): 1591-1606.

[9] [9] Sun Y, Hou Y, Zhao F, et al.. A calibration method for misaligned scanner geometry in cone-beam computed tomography[J]. NDT & E International, 2006, 39(6): 499-513.

[10] [10] Chen Lian,Wu Zhifang, Liu Ximing, et al.. Analytical geometric parameter calibration algorithm for cone-beam CT[J] . Journal of Tsinghua University (Science and Technology) , 2010, 50(3): 418-421.

[11] [11] Wang L, Zhang P. Correction of geometric artifacts for fan-beam CT[J]. Acta Electronica Sinica. 2011, 39(5): 1143-1149.

[12] [12] Sun Lingxia, Li Ju, Zhou Jiang, et al.. Precise positioning of X-ray source in industrial CT system[J]. Nuclear Electronics & Detection Technology, 2007, 27(4): 716-718.

[13] [13] Gullberg G T, Crawford C R, Tsui B M W. Reconstruction algorithm for fan beam with a displaced center-of-rotation[J]. IEEE Transactions on Medical Imaging, 1986, 5(1): 23-29.

[14] [14] Ford J C, Zheng D, Williamson J F. Estimation of CT cone-beam geometry using a novel method insensitive to phantom fabrication inaccuracy: Implications for isocenter localization accuracy[J]. Medical Physics, 2011, 38(6): 2829-2840.

[15] [15] Wang X G, Zhang C Z, Guo Z P. Automatic method of rotation center determination with Hough transform and thin cylinder phantom[J]. CT Theory and Applications, 2010, 19(4): 1-5.

[16] [16] Mennessier C, Clackdoyle R, Noo F. Direct determination of geometric alignment parameters for cone-beam scanners[J]. Physics in Medicine and Biology, 2009, 54(6): 1633-1660.

[17] [17] Yang Min, Liu Jinghua, Li Baolei, et al.. Measurement method of X-ray focus projection coordinates of three-dimensional microcomputerized tomography scanning system[J] . Acta Optica Sinica, 2009, 29(5): 1275-1280.

[18] [18] Xu J, Tsui B M. An Analytical geometric calibration method for circular cone-beam geometry[J]. IEEE Transactions on Medical Imaging, 2013, 32(9): 1731-1744.

[19] [19] Niu Xiaoming, Zeng Li, Liu Baodong, et al.. Katsevich correction and rectification algorithm for off-center spiral cone-beam CT[J]. computer engineering, 2009, 35(5): 215-217.

[20] [20] Fu Jian, Lu Hongnian. Correction of error in the center of rotation of fan-beam filter back projection algorithms[J]. Acta Armamentarii, 2003, 24(3): 334-337.

[21] [21] Patel V, Chityala R N, Hoffmann K R, et al.. Self-calibration of a cone-beam micro-CT system[J]. Medical Physics, 2009, 36(1): 48-58.

[22] [22] Yuan Yaxiang, Sun Wenyu. Optimization Theory and Method[M]. Beijing: Science Press, 1997: 640-658.