4McBain C A,Henry A M,Sykes J,et al.X-ray volumetric imaging in image-guided radiotherapy:the new standard in on treatment imaging[J].Int J Radiat Oncol Biol Phys,2006,64 (2):625-634.
5Guckenberger M,Meyer J,Vordermark D,et al.Magnitude and clinical relevance of translational and rotational patient setup errors:a cone-beam CT study[J].Int J Radiat Oncol Biol Phys,2006,65(3):934-942.