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Our proven VMAT treatment planning algorithm is the most flexible solution available today, allowing clinicians to efficiently create high-quality single or multiple-arc plans for Elekta, Varian and Siemens linacs.

VMAT planning

Design and optimization of single- or multiple-arc plans is enabled. VMAT is planned through 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 follow the same workflow as SMLC optimization. In addition it is possible to use delivery time and motion constraints.

The direct optimization of machine parameters means the optimized plan is directly deliverable with no quality-degrading post processing required. Varian, Elekta and Siemens machines are supported, including non-upgraded Varian machines and the Siemens mArc.

As the computation time is measured in seconds rather than minutes, you can efficiently produce several competing treatment plans to assess different trade-off situations instead of opening a second case or going on a break during computations. Download the study below and see how decreasing calculation times for VMAT planning significantly increased the fulfillment of clinical goals.

Demonstration video

The effect of planning speed on VMAT plan quality
Decreasing calculation times for VMAT planning from around 10-17 min for optimization and final dose calculation to around 2 – 4 minutes significantly increased the fulfillment of clinical goals.
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Boost your linac with smart optimization

With RayPlan, you can take constant dose rate VMAT to the next level thanks to smart optimization. You can reach plan quality equivalent to variable dose rate VMAT without an expensive hardware upgrade.

Using modern and innovative treatment planning tools, it is possible to create deliverable Split Constant Dose Rate (SCDR) plans with comparable plan quality as corresponding Variable Dose Rate (VDR) plans, without upgrading the linac to VDR. The delivery times of both the VDR and the SCDR plans are significantly shorter than what is reported for IMRT plans. The mean delivery times of the tested prostate plans are between 1 and 2 minutes for both techniques, and between 2 and 4 minutes for the tested head and neck plans. Read more in the white paper below. 


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