VMAT SX2

Four (4) arc VMAT technique was chosen and 4 almost complete arcs were used.   This plan was made on Halcyon with the MLC in SX2 mode and AcurosXB v17.0.  Plan created using the RapidPlan HSWBv2 model seen below with convergence mode: extended and MU objective enabled with Minimum MU set to 1600.  Full details in clinical description document packaged with the RapidPlan model or at the PDF link below.

Maximal hippocampal sparing, beyond what is requested by the NRG-CC001 protocol, is achieved here.  This HSWBv2 model (released 2022) was derived from the HSWBv1 (released 2016) and utilized a similar recurrsive model creation process.  This time all trainingset casses are made from an intial HSWBv2 model but the trainingset cases are all Halcyon SX2 plans calulated with AcrosXB v17.  Additional structures and metrics were added to the dosimetric scorecard which guided the model creation process and helped further reduce hippocampal dose, improve brain homogenity, dose confomity and lower doses in the patient's face.  This HSWBv2 model offers unparrleled plan quality on the Halcyon delivery platform in an easy to use single click solution.

_{Any reference to a "plan study" are simply what the organizers call each case and may not be a "study" in the FDA sense as they may not have been published in a peer reviewed journal.
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