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HIGH QUALITY VMAT PLANS THE FLEXIBLE WAY

VMAT MADE FAST AND FLEXIBLE

RayStation's 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/ rayArc

With rayArc, RayStation offers efficient design and ultrafast optimization of directly deliverable single or multiple-arc VMAT plans, that can be created in a similar way to fixed beam plans.

The beams are replaced by arcs, and there are some additional settings regarding delivery time and motions constraints. Otherwise, the optimization functions and the interface are the same. The optimization process follows the same pattern as for SMLC optimization: a preliminary fluence optimization step, sequencing into machine parameters followed by direct optimization of machine parameters. 

VMAT is planned through an optimization procedure (inverse planning) where objectives and constraints for the desired dose are defined, and the system produces the plan that best matches these criteria within the limitations of the treatment machine.

That 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.

Watch a demonstration of VMAT planning in RayStation

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Boost your linac with smart optimization

With RayStation, 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 SCDR plans with comparable plan quality as corresponding 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.

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