3AAPM.Report NO 62 quality assurance for clinical radiotherapy treatment planning[J].Med Phys,1998,50:1773-1793.
4Samuelsson A, Mercke C, Johansson KA. Systematic set-up errors for IMRT in the head and neck region:effect on dose distribution[J]. Radiother Oncol,2003,66(3 ) :303.
5Hurkmans CW, Remeijer P, Lebesque JV, et al. Set-up veri- fication using portal imaging; review of current clinical practice [J]. Radiother Onco1,2001,58 ( 2 ) : 105.
6Stroom JC, De Boer HCJ, Huizenga H, et al. Inclusion of ge- ometrical uncertainties in radiotherapy treatment planning by means of coverage probability [J]. Int J Radiat Oncol Bi- ol Phys, 1999,43 ( 5 ) : 905.
7Manning MA, Wu Q, Cardinale RM, et al. The effect of set- up uncertainty on normal tissue sparing with IMRT for head-and-neck cancer [ J ]. Int J Radiat Oncol Biol Phys, 2001,51 (5) : 1400.
