[1]Singh M, Nagrath A R, Maini P S et al. Changes in trabecular pattern of the upper end of the femur as an index of osteoporosis[J]. Journal of Bone and Joint Surg., 1970,52(3):457~467.
[2]
[3]Srinivasa N, Ramakrishnan K R, Rajgopal K. Two-dimensional spectral estimation: Aradon transform approach[J]. IEEE Journal of Oceanic Engineering., 1987,12(1):90~96.
[3]
[6]Nishikawa R M, Yaffe M J. Model of the spatial-frequency-dependence detective quantum efficiency of phosphor screens[J]. Medical Physics., 1990,17(5):894~904.
[4]
[8]刘忠厚主编. 骨质疏松学[M]. 北京:北京科学技术出版社, 1998,356.
[5]
[2]Kak A C, Slaney M. Principles of computerized tomographic imaging[M]. New York: IEEE Press, 1988:56~74.
[6]
[4]Bunch P C, Huff K E, Metter R V. Analysis of the detective quantium efficiency of a radiographic screen-film combination[J]. J. Opt. Soc. Am. A., 1987,4(5):902~909.
[7]
[5]Metter R V, Rabbani M. An application of multivariate moment-generating functions to the analysis of signal and noise propagation in radiographic screen-film systems[J]. Medical Phys., 1990,17(1):65~71.
[8]
[7]Rabbani M, Shaw R. Detective quantum efficiency of imaging systems with amplifying and scattering mechanisms[J]. J. Opt. Soc. Am. A., 1987,4(5):895~901.
[9]
[9]Rao R A. A taxonomy for texture description and identification[M]. New York:Springer-Verlag, 1990:17~37.