RaySearch Laboratories AB

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About RaySearch Laboratories AB

RaySearch is a world leader in the field of advanced software for radiation therapy.

RaySearch markets the RayStation® treatment planning system to clinics all over the world. In addition, RaySearch’s products are distributed through licensing agreements with leading medical technology companies. RaySearch’s solutions are used successfully in over 2,500 clinics in more than 65 countries.

RaySearch was founded in 2000 as a spin-off from Karolinska Institute in Stockholm, Sweden. The product development and the research teams are based at the head office in Stockholm, together with senior management and the central sales, marketing and service organization.

In less than fifteen years, the company has established a world-leading position in the field of advanced software for radiation therapy and hundreds of thousands of cancer treatments are delivered each year utilizing RaySearch’s algorithms and software products.

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RayStation® integrates all RaySearch’s advanced treatment planning solutions into an innovative and flexible treatment planning system. It combines unique features such as multi-criteria optimization tools with full support for 4D adaptive radiation therapy. It also includes functionality such as RaySearch’s market-leading algorithms for IMRT and VMAT optimization and highly accurate dose engines for photon, electron, proton and carbon ion therapy. The system is built on the latest software architecture and has a graphical user interface offering state-of-the-art usability.

It always includes:

  • rayPlatform
  • rayEvaluation
  • rayAnatomy
  • rayPlan

RayStation 4.7

Boost your linacs with RayStation® Treatment Planning Software

At RaySearch, we believe software is the key to achieve greater efficiency and patient care in radiation therapy. Accordingly RayStation® 4.7 takes automation and optimization to the next level: unique scripting and protocol capabilities, automated breast planning, fallback planning, ultrafast optimization and dose computation on GPU, Multi-Criteria Optimization, deformable registration are just a few of the highlights that could revolutionize your practice. For more information visit http://www.raysearchlabs.com/products/

For more information on any of these products, please visit www.RaySearchlabs.com

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Multi-criteria optimization/ rayNavigator

rayNavigator introduces the concept of multi-criteria optimization (MCO), which provides an alternative optimization workflow. Instead of the planner performing iterative optimization with adjustments to optimization functions and weights RayStation generates a set of Pareto plans.

These plans respect all constraints and no objectives can be improved without impairing another one. Based on these plans, the planner or physician can manipulate sliders in real time to balance between clinical trade-offs.

An interactive navigation tool for selecting the best clinical trade-off based on fluence-based anchor plans.

  • Automatic tool for generating a deliverable treatment plan from this selection.
  • rayNavigator is available for IMRT, VMAT and Proton PBS planning.


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Fallback Planning

rayFallback is a tool for creating additional plans to be used in a contingency situation, enabling a patient to be treated on another machine, possibly with a different modality and/or treatment technique, in case the original machine is unavailable.


  • Fallback planning using dose mimicking
  • After plan approval, the system can generate fallback plans using alternative machines and treatment techniques
  • Plans of any modality can be replicated using photon plans with 3D-CRT (rayConformal), IMRT (rayIntensity) and/or VMAT (rayArc)
  • User-defined protocols specify the setup of the fallback plans
  • Fallback plans are automatically generated from the protocols
  • Fallback plans can be compared and evaluated using a number of visual tools (DVH curves, dose differences, etc.)
  • A Fallback plan can be approved and used for delivery in future fractions


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Dose Tracking

By combining dose calculation capabilities (for any modality) and deformable registration, it becomes possible to accumulate dose over changing anatomy within a single system, i.e. without imports or exports to other systems. This includes computing dose on CBCT.


  • Dose calculations based on CBCT


Adaptive re-Planning

rayAdaptive provides tools for adaptive re-planning and opens up for the most recent technology in the history of external radiation treatment. Based on the results from rayTracker, the clinicians can steer a derailed treatment back on track by re-optimizing and adapting the plan to the patient’s current anatomical structures, taking accumulated dose into account. Plans can be re-optimized and adjusted to compensate for dose coverage problems or to adapt to adjusted clinical goals.


  • Adaptive re-planning workspace
  • Fraction schedule (shows delivered and re-planned fractions)
  • Toolbar including relevant parts of plan creation, plan optimization and plan approve
  • Create adapted plan from Plan Creation module (based on planned fractions)


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