[1] [1] WANG Ming, HU Xiao-fang, WU Xiao-ping, et al. Study on the technique of diffraction-enhanced computed-tomography by synchrotron radiation X-ray［J］.Acta Photonica Sinica, 2006, 35(10): 1597-1601.

[2] [2] GAN Hui-qing, ZHU Hua-feng, CHEN Jia-wen, et al. On in line X-ray phase contrast imaing［J］. Acta Photonica Sinica, 2006, 35(6): 886-889.

[3] [3] ISMAIL E C, KAABAR W, GARRITY D, et al. X-ray phase contrast imaging of the bone–cartilage interface［J］. Applied Radiation and Isotopes, 2010, 68(4-5): 767–77.

[4] [4] DAVID C, NOHAMMER B, SOLAK H H, et al. Differential X-ray phase contrast imaging using a shearing interferometer［J］. Applied Physics Letters, 2002, 81(17): 3287-3289.

[5] [5] CHAPMAN D, THOMLINSON W, JOHNSTON R E. Diffraction enhanced X-ray imaging ［J］. Physics in Medicine and Biology, 1997, 42(2): 2015-2025.

[6] [6] MOMOSE A, TAKEDA T ITAI Y. Phase-contrast X-ray computed tomography for observing biological soft tissues［J］. Nature medicine, 1996, 2(4): 473-475.

[7] [7] WEITKAMP T, DIAZ A, DAVID C. X-ray phase imaging with a grating interferometer［J］. Optics Express, 2005, 13(16): 2289-2302.

[8] [8] LIU Xin, GUO Jin-chuan, NIU Han-ben. New method of detecting interferogram in differential phase-contrast imaging system based on special structured X-ray scintillator screen［J］. Chinese Physics B, 2010, 19(7): 070101-1~5.

[9] [9] LIU Xin, GUO Jin-chuan, NIU Han-ben. Diffraction eff iciency of X-ray grating with polychromatic source［J］. Acta Photonica Sinica, 2007, 24(3): 261-266.

[10] [10] LIU Xin, GUO Jin-chuan, NIU Han-ben. Visibility in differential phase-contrast imaging with partial coherence source［J］. Chinese Physics, 2006, 16(6): 1632- 1636.

[11] [11] WEITKAMP T, DAVID C, BUNK O. X-ray phase radiography and tomography of soft tissue using grating interferometry ［J］. European Journal of Radiology, 2008, 68(3): S13-S17.

[12] [12] NESTERETS Y I, WILKINS S W, GUREYEV T E, et al. On theop timization of experimental parameters for X-ray in-line phase-contrast imaging［J］. Review of Scientific Instruments, 2005, 76(9): 1-14.

[13] [13] POGANY A, GAO D C, WILKINS S. Contrast and resolution in imagingwith a microfocus X-ray source［J］. Reviewof Scientific Instruments, 1997, 68(9): 2774-2782.

[14] [14] MAYO S C, DAVIS T J, GUREYEV T E. X-ray phase-contrast microscopy and microtomography［J］.Optics Express, 2003, 11(15): 2286-2302.