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MAKE YOUR PROTON PLANS ROBUST TO CHANGE

The precision of proton therapy makes it a unique treatment method. A basic fact of proton therapy is that high precision also means sensitivity to change. RaySearch understands this, and we’ve designed the RayStation treatment planning system to account for every eventuality.

Planning for proton with RayStation

Whatever your goals in proton therapy, RayStation has the capabilities you need. It supports a variety of treatment techniques and beam lines, including pencil beam scanning, uniform scanning, double scattering, Sumitomo wobbling and Sumitomo line scanning.

RayStation utilizes a unique robust optimization method that takes into account the effects of potential changes, from the beginning, and makes your plan robust even against a worst case scenario. Other issues are interfractional motion resulting in interplay effects and RayStation offers tools to evaluate and mitigate them like repainting. Additionally, RayStation’s unique capabilities for adaptive therapy, like its efficient replanning tools, can help you control the course of the treatment even under the influence of change. 

Highly compatible, RayStation is the go-to choice for centers that need a single treatment planning system for proton systems from multiple vendors, including Varian, IBA, Mevion, Mitsubishi Electric and Sumitomo.

 

 

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Proton Pencil Beam Scanning planning/ rayPencilScanning and rayLineScanning

With rayPencilScanning and rayLineScanning, RayStation provides the tools for designing and optimizing actively scanned pencil beam proton treatment plans like IMPT, single field uniform dose and distal edge tracking.

It includes, among other things, tools for robust optimization which makes it possible to create treatment plans which are robust to geometrical and dosimetric uncertainties.In addition, the inclusion of 4D-CT images in the robust optimization process addresses situations where there is significant relative interfractional motion of internal organs, such as in the thorax during free breathing. Other challenges arising from intrafractional motion include interplay effects, which will occur if the delivery takes place on a similar time scale as the intrafractional organ motion.  Evaluation of these effects and methods to mitigate them is crucial, and RaySearch has developed tools for this purpose, such as layer repainting. All plans are directly deliverable after optimization, since the minimum spot weight is taken into account in the optimization.

  • Fast pencil beam dose engine
  • Optimization of pencil bean scanning and line beam scanning using multi field optimization, single field uniform dose and distal edge tracking techniques.
  • Robust optimization  over multiple 4DCT images, scenario based optimization regarding uncertainties in range (density) and position (isocenter shifts, target shifts etc.)
  • Control of initial spot selection per beam with respect to target and OARs
  • Layer repainting
  • Snout position determined automatically from user defined air gap
  • Range shifter support

PBS specific features:

  • Step-and- shoot spot scanning
  • Spot visualization in beam’s-eye-view and in patient 2D/3D views
  • Manual editing of spot pattern
  • Spot weight filtering
  • Optimization including lower limit of spot MU delivery
  • Quasi-discrete PBS
  • Spot order sorting through scan path length optimization

Line scanning specific features:

  • Line segment visualization
  • Bragg peak visualization
  • Line segment filtering in optimization in beam’s-eye-view and in patient 2D/3D views

 

Watch how Provision manages its proton planning with RayStation

Provision Center for Proton Therapy in Knoxville, Tennessee, was the first proton center to use RayStation for their proton treatments. They are treating with the most advanced form, Pencil Beam Scanning. See the great results they achieve with RayStation!

READ MORE IN THE WHITEPAPERS
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Watch Introduction video to Proton PBS in RayStation

Watch video on Advanced proton planning in RayStation

Conformal proton planning/ rayPassiveScattering, rayUniformScanning and rayWobbling

rayPassiveScattering, rayUniformScanning and rayWobbling provide modern tools for efficient planning of uniform scanning, double scattering and Sumitomo wobbling.

rayUniformScanning, rayPassiveScattering and rayWobbling help the user create clinical treatment plans and subsequent milling machine instructions including the automated creation of compensators and blocks with manual editing possibilities. 

  • Support for beam delivery techniques using continuous as well as fixed SOBP modulation width
  • Automatic and/or manual selection of:
    - SOBP field range and width
    - nominal beam energy and ridge filter setting
  • Block aperture computation
  • Beam specific target and risk organ specification
  • Border smoothing taking the milling tool size into account
  • Aperture shape exported via DICOM
  • Compensator computation
  • Conforms to beam specific targets and distal blocking ROIs
  • Smearing and maximum gradient filters
  • Milling/drilling tool size taken into account
  • Compensator shape exported via DICOM
  • Versatile tools for manual editing of exit aperture, compensator and MLC shape
  • Patch fields and feathering tools
  • Beam weighting using sliders