TY - RPRT TI - Optimizing 4D cone-beam CT acquisition protocol for external beam radiotherapy. AU - Tianfang Li AU - Lei Xing PY - 2006 DO - 10.1016/j.ijrobp.2006.10.024 UR - https://pubmed.ncbi.nlm.nih.gov/17197125/ ID - 17197125 ER -