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General principles (1)

• AAPM Report 85 (Task Group 65) on tissue inhomogeneity corrections for megavoltage photon beams. The task group recommended an accuracy goal for tissue heterogeneity corrections of 2% in order to achieve an overall 3% accuracy in dose delivery ;2004 • AAPM report TG 71 Electron Beam Dosimetry ;2009 • AAPM Protocol for 40-300 KV x-ray beam dosimetry in radiotherapy and radiobiology ;2001 • AAPM Report TG 132 Use of image registration and fusion algorithms and techniques in radiotherapy 2017