3Marcel van Herk,David Jaffray,Peter Remeijer et al. hnage Guided Radiotherakdiatinn Therapy[J]. p22,2004.
4Hui Yan,Fang-Fang Yin, Jae Ho Kim. Correlation Analysis between Skin -Marker Motions and Internal Target Motinns,The XIVth International Conference on the Use of Computers in Radiation Therapy [J]. p22,2004.