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Purpose of the upcoming ICRU/GEC
ESTRO Report (88)
To provide common concepts and terms
* for volumes, in particular initial/residual GTV
initial/adaptive CTV, PTV, OAR (3D/4D)
* for radiobiological variations
* for dose volume parameters (3D/4D)
* for the process: planning aims to prescription
* for dose point parameters (2D)