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MRI-guided IMRT: organ motion (1)
Large interscan motion was found for all 3 POI, only partially explained by variations in
bladder and rectal filling. The margins required to encompass 90% of the interscan
motion were 4 cm at the fundus and 1.5 cm at the external cervical os.
Chan P. et al. Int J Radiat Oncol Biol Phys 2008.