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Dose in ICRU83
Quality assurance for IMRT treatment plans
Previous
5% point dose accuracy specification
Replaced by volumetric dose accuracy specification for IMRT
Not limited to single point
High gradient (≥20%/cm):85% of points within 5 mm (1 SD of 3.5
mm)
Low gradient (<20%/cm): 85% of points within 5% of predicted dose
normalized to the prescribed dose