An intuitive workflow-based treatment planning software designed for radiosurgery planning, Accuray’s MultiPlan^® Treatment Planning System enables the creation of plans that have excellent conformality and coverage and steep dose gradients. MultiPlan treatment plans are created using images from multiple modalities, including CT, MR,PET and 3D Rotational Angiography.

Powerful image fusion
Up to four image sets can be used for treatment planning, including a reference CT as well as up to three additional CT, MR, PET and/or\ 3D Rotational Angiography image sets. The MultiPlan System supports image sets in axial, sagittal, coronal and oblique orientations. Fusion is performed automatically using a normalized mutual information based algorithm or manually using anatomical and other reference points and image manipulation tools. Powerful review tools enable the user to verify the quality of the registration result.

Simplified contouring
Create customized planning templates that can be used when delineating volumes of interest (VOI) on any displayed 2D planes(axial, sagittal or coronal) using fused image sets. Delineation includes basic tools, such as drawing and bumper tools, and advanced tools such as Magic Wand™ and Smart Curve.™ Use these and other tools to delineate multiple structures in a single VOI (e.g. cavities and bifurcated structures). Other tools enable generation of anisotropic volume expansion and tuning structures with just a few mouse clicks.

Plan optimization
Choose the appropriate tracking option–6D Skull Tracking, Fiducial Tracking, Synchrony^® Respiratory Tracking, Xsight^® Spine Tracking System or the Xsight^® Lung Tracking System–and set dose constraints to create an optimized treatment plan using forward or inverse planning techniques and a choice of powerful optimization algorithms. 

Once a plan is generated, the software allows multiple methods of evaluation and modification of treatment plans to ensure best results:

• View isocontours on every slice in every plane; view and interrogate the dose volume histogram (DVH) for the target and for each critical structure
• Select 4D optimization tools to account for tissue deformation in lung treatments
• Review plan statistics, such as conformality and homogeneity indices, and 3D representations of the beam and patient geometry
• Visualize the actual treatment delivery in action
• Select beams singly or in groups and manually modify any treatment parameter
• Compare high resolution plans side-by-side to determine which provides the best treatment for the patient

Quality assurance (QA) and system commissioning support
The MultiPlan System provides a variety of tools which allow users to perform QA tasks in line with common commissioning and QA standards, including:

• Ability to create QA plans for end-to-end testing of the CyberKnife System
• Phantom overlay of individual treatment plans for plan QA
• Ability to export a treatment beam parameter list, enabling patient specific manual dose calculation checks
• The ability to view and approve beam data that is stored in the CyberKnife database prior to using this data to generate plans

DICOM interfaces*

• Import and Export DICOM Image series
• Import and Export DICOM RT Structure Set
• Export DICOM RT Dose

*System configuration components subject to change.