[1] [1] Li Baolei, Yang Min, Fu Jian et al.. Two ring artifact correction methods for computed tomography［J］. Acta Optica Sinica, 2009, 29(7): 1849～1853

[2] [2] Fang Zheng, Sun Xiaomin, Luo Qingming. New simple method of X-ray beam hardening correction for CT reconstruction［J］. Acta Optica Sinica, 2007, 27(2): 302～306

[3] [3] Chen Xin, Sun Yi, Zhu Peiping. Reconstruction algorithm of cone|beam phase X-ray computer-tomography based on grating imaging［J］. Acta Optica Sinica, 2008, 28(6): 1079～1084

[4] [4] R. F. Eilbert, K. D. Krug. Aspects of image recognition in vivid technology′s dual-energy X-ray system for explosive detection［C］.SPIE, 1992, 1824: 127～143

[5] [5] R. Alvarez, A. Macovski. Energy-selective reconstructions in X-ray computerized tomography ［J］. Phys. Med. Biol., 1976, 21(5): 733～744

[6] [6] http://www.revealimaging.com/,2009.10.8

[7] [7] http://www.analogic.com/,2009.10.8

[8] [8] J. A. Fessler, I. Elbakri, P. Sukovic et al.. Maximum-likelihood dual-energy tomographic image reconstruction［C］. SPIE, 2002, 4684: 38～49

[9] [9] P. Sukovic, N. H. Clinthorne. Penalized weighted least-squares image reconstruction for dual energy X-ray transmission tomography［J］. IEEE Trans. Med. Imag., 2000, 19(11): 1075～1081

[10] [10] G. Christ. Exact treatment of the dual-energy method in CT using polyenergetic X-ray spectra ［J］. Phys. Med. Biol., 1984, 29(12): 1501～1510

[11] [11] J. C. M. Steenbeek, C. van Kuijk, J. L. Grashuis. Selection of fat-equivalent materials in postprocessing dual-energy quantitative CT［J］. Med. Phys., 1992, 19(4): 1051～1056

[12] [12] M. M. Goodsitt. Beam hardening errors in post-processing dual energy quantitative computed tomography［J］. Med. Phys., 1995, 22(7): 1039～1047

[13] [13] J. Peter Stonestrom, R. Alvarez, A. Macovski. A framework for spectral artifact corrections in X-ray CT［J］. IEEE Transactions on Biomedical Engineering, 1981, 28(2): 128～141

[14] [14] K. S. Chuang, H. K. Huang. A fast dual-energy computational method using iso-transmission lines and table lookup［J］. Med. Phys., 1987, 14(2): 186～192

[15] [15] R. E. Alvarez, J. A. Seibert, S. K. Thompson. Comparison of dual energy detector system performance［J］. Med. Phys., 2004, 31(3): 556～565

[16] [16] H. N. Cardinal, A. Fenster. An accurate method for direct dual-energy calibration and decomposition ［J］. Med. Phys., 1990, 17(3): 327～341

[17] [17] W. A. Kalender, W. H. Perman, J. R. Vetter et al.. Evaluation of a prototype dual-energy computed tomographic apparatus. I. Phantom studies［J］. Med. Phys., 1986, 13(3): 334～339

[18] [18] K.S. Chuang, H. K. Huang. Comparison of four dual energy image decomposition methods［J］. Phys. Med. Biol., 1988, 33(4): 455～466

[19] [19] Z. R. Ying, R. Naidu, K. Guilbert et al.. Dual energy volumetric X-ray tomographic sensor for luggage screening［C］. Proceedings of IEEE Sensors Applications Symposium, 2007, (6-8): 1～6

[20] [20] Z. R. Ying, R. Naidu , C. R. Crawford. Dual energy computed tomography for explosive detection［J］. J. X-ray Science and Technology, 2006, 14(4): 235～256

[21] [21] Guowei Zhang, Jianping Cheng, Li Zhang et al.. A practical reconstruction method for dual energy computed tomography［J］. J. X-Ray Science and Technology, 2008, 16(2): 67～88

[22] [22] http://sourceforge.net/projects/spectrumgui/,2009.12.18

[23] [23] http://physics.nist.gov/PhysRefData/XrayMassCoef/Cover.html,2009.12.18