VMAT SX1

Name (ID): Liver, SBRT (LiverSBRT)
Plan or PlanSum ID: 4aVMATID

Four arc (4) VMAT technique was chosen and 4 almost complete arcs were used.  Unique collimator rotations per field were automatically generated by the arc geometry tool.  By far, the most challenging aspect of this plan was achieving the mean dose to uninvolved liver constraint.  By placing large constraints on healthy liver in the optimizer that constraint was able to be met, at the cost of some dose conformality.  All constraints were met as requested by the protocol with no variations cited.

This is a large liver lesion treated with SBRT. Given the size of the lesion, liver sparing is always a concern. This is achieved appropriately in this case. This is a clinically acceptable plan.

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