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Moving from 2D to 3D/ 4D IGBT
• Geometric errors in target coverage of 40% (SD) with
cancer in parametrium often under-dosed in bulky cancers
• Information about OAR doses unreliable (20% SD)
• All resulted in variable practice and sub-optimal outcomes
• GEC ESTRO Guidelines published 2005-6
• Concepts and terms for use with 3D MRI
• DVH parameters, aspects of
anatomy/physics/radiobiology
• Implemented over last 15 years driven by EMBRACE trial