Physics Bucharest 2017

VMAT - Planning vs Deliverability

degrees of freedom

• MLC motion and MU variation are to be constrained between gantry samples to preserve continuous delivery → efficiency constraints to the solution space • Maximum gantry rotation speed or jaws/MLC modulation speed can be a limiting factor to the maximum specified dose rate

• Optimization → find a trade off between deliverable - time consuming – complexity - modeling Accuracy