Flipping Book - ATP

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Robust Control in Optimization
 A plan is robust, if treatment goals are met, despite uncertainties in the
patient model.
Margins
 A robust strategy for target coverage with a clear price (healthy tissue
irradiated).
Alternative
 Abandon margins and model motion explicitly in optimization
 Anticipate the variation to be encountered over the treatment course.
 Statistical model with stable characteristics (probability distribution)
 Focus on uncertainty from motion, rather than the details of the motion:
 Achieve the correct mean target position, tailor beam intensity and margins
 Robust control anticipates variations without feedback