Assessing Respiration-Induced Tumor Motion and Internal Target Volume Using Four-Dimensional Computed Tomography for Radiotherapy of Lung Cancer

H. Helen Liu, Peter Balter, Teresa Tutt, Bum Choi, Joy Zhang, Catherine Wang, Melinda Chi, Dershan Luo, Tinsu Pan, Sandeep Hunjan, George Starkschall, Isaac Rosen, Karl Prado, Zhongxing Liao, Joe Chang, Ritsuko Komaki, James D. Cox, Radhe Mohan, Lei Dong