VMAT Planning
Design and optimization of single- or multiple-arc plans is enabled. VMAT planning is done using an optimization procedure (inverse planning). Objectives and constraints for the desired dose are defined and the system creates a plan that matches these criteria as closely as possible within the limitations of the treatment machine. The optimized plan is directly deliverable, without the need for post-processing that might degrade quality. VMAT planning follows the same workflow as SMLC optimization. Delivery time and motion constraints can also be used. The direct optimization of machine parameters means the optimized plan is directly deliverable, with no post-processing required. Varian, Elekta and Siemens machines are supported, including non-upgraded Varian machines and the Siemens mArc.
RayStation lets you can take constant dose rate VMAT to the next level thanks to smart optimization. Now you can reach plan quality equivalent to variable dose rate VMAT without an expensive hardware upgrade.
Using the powerful scripting and dose mimicking functionality unique to RayStation, we can create CDR plans that are comparable in plan quality to a variable dose rate plan, while still maintaining a high level of plan quality, and significantly shorter delivery times then what is typical for IMRT. The mean delivery times for tested prostate plans are between one and two minutes for both techniques, and between two and four minutes for the tested head and neck plans. Read more in the white paper below.