1Kawrakow I,Fippel M.Investigation of variance reduction techniques for Monte Carlo photon dose calculation using XVMC.Phys Med Biol,2000,45:2163-2183.
3Michael SM.On the use of antithetic variates in particle transport problem.Anna Nucl Ener,2001,28:297-332.
4Joseph OD.Denoising of electron beam Monte Carlo dose distributions using digital filtering techniques.Phys Med Biol,2000,45:1765-1779.
5Joseph OD,Wickerhauser MV,Mathieu P.Accelerating Monte Carlo simulations of radiation therapy dose distributions using wavelet threshold de-noising.Med Phys,2002,29:2366-2373.
4Joseph O Deasy, et al. Denoising of electron beam Monte Carlo dose distributions using digital filtering techniques[J]. Phys Med Biol, 2000, 45:1765 - 1779.
5Joseph O Deasy, et al. Accelerating Monte Carlo simulations of radiation therapy dose distributions using wavelet threshold de-noising [J]. Med Phvs 2002, 29:2366 - 2373.
6John Krumm. Savitzky-Golay fihers for 2D images[R]. Microsoft Research, 2001.
7Madansky A. Prescriptions for working statisticians[ M]. New York: Springer, 1988.
8Savitzky A, Golay M J E. Smoothing and differentiation of data by simplified least squares procedures[J]. Anal Chem, 1964,36(8): 1627- 1639.
9Alan V Oppenheim. Signals & Systems[ M]. Second ed. Publishing House of Electronics Industry, 2002.