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Solid Compensator Brochure


Overview

TREAT YOUR PATIENT USING IMRT WITHOUT THE EXPENSE OF AN MLC

Traditional IMRT plans require a MLC to modulate the radiation beam. Panther™ Solid-Compensator IMRT utilizes precision machined blocks for beam shaping, effectively eliminating the need for a MLC. Solid-Modulator IMRT gives you and your patients superior performance using the most advanced technology.

SAVINGS OF HUNDREDS OF THOUSANDS OF DOLLARS

Because an MLC attachment for a linear accelerator is very costly, many clinics have delayed the implementation of IMRT. The significant investment in additional equipment necessary to deliver IMRT plans has also prevented many clinics from being able to offer the treatment technique

Prowess recognizes the need for a less expensive way of delivering IMRT and has developed Panther™ Solid-Compensator based IMRT that does not compromise on the quality of the treatment.

BENEFITS OF SOLID-MODULATOR IMRT COMPARED TO MLC

Because a MLC is a very expensive and sophisticated piece of equipment, IMRT with MLC involves very high implementation and maintenance costs to the hospital. Solid IMRT saves on these costs.

Treatments can be delivered with a 50% or more reduction in Monitor Units (MUs) saving on the wear and tear of the LINAC.

More patients can be treated using Panther™ Solid-Compensator based IMRT than compared to IMRT with MLC, because the delivery time is much shorter.

Specifications

Imaging

Image Import

  • DICOM 3.0 and DICOM RT compatible, ATC compliant.
  • Automatic CT/MR/PET image data acquisition in DICOM 3.0 format.
  • Supports multiple patient scanning orientation positions (HFS, HFP, FFS, FFP, FFDL, FFDR, HFDL, HFDR).
  • Supports images with uniform and non-uniform spacing.
  • Supports scanner and digitizer interface with image rescaling ability. Scanned images can be rotated in 90-degree increments, or flipped 180-degrees.

Image Fusion

  • Support for CT, MRI, PET, SPECT images in DICOM 3.0 format
  • Automatic and Manual Image Fusion methods supported
  • Numerical 'fit' suggests the accuracy in the image registration
  • Up to ten fiducial markers can be used for registration on either of the image series
  • Advanced automatic and manual comprehensive contouring tools
  • Easy to use editing and correction tools
  • Undo, Redo contouring utility
  • Multiple Boolean Operators
  • Multiple 3D image set support
  • Asymmetric Margins
  • Easy checking tools including Aperture, Checkerboard and transparency
  • Individual window width and level adjustments for the master, slave series.
  • Master/Slave series can be changed anytime before contouring from the Image Fusion window
  • Contours can be drawn on either the master or slave image series

Contouring

Contouring Features

  • Support up to 60 volumes
  • Contouring can be done in Full Screen mode
  • Advanced Automatic and Manual comprehensive contouring tools
  • Multi-slice auto contouring for external and differentiated internal contours
  • Image crop tool allows volumes to be contoured with automatic tools
  • Manual contouring tools via point-by-point and continuous modes
  • Can overlay contours in the previous/next slices to facilitate manual contouring
  • Easy to use editing, correction tools. Add/delete/replace/move/paint/copy/scale using simple mouse operations.
  • Supports interpolation of the contours in the intermediate slices
  • Undo, Redo contouring tool support
  • Powerful Boolean Operators that can generate new contours from the existing ones using Intersection, Difference and Union logics.
  • Supports multiple Boolean operations
  • Asymmetric Margins with organ avoid feature
  • Zoom and pan controls
  • Contours can be drawn with a digitizer
  • Multiple 3D image set support
  • User chosen density values can be assigned to a given transverse image with mouse operations. Can also fill any contoured organ with a chosen density value.
  • Density values are displayed in the status bar when moving the mouse over the CT images.
  • User can de-select any selected tool (Paint brush, zoom in/out, etc.) by pressing the ESC key.
  • Scroll through non-transverse (sagittal, coronal) slices.
  • Easy cleanup of small erroneous contours created by automatic contouring tool.
  • Volume decimation allows users to delete and modify contours on a few slices; the rest can then be interpolated.
  • Both calculation points and fiducial markers can be visualized in the beam's eye view and moved in any of the views.

Planning

Plan Manager

  • Select, Copy, Delete, and Add plans.
  • Plan type: External, Brachytherapy, Composite, and Irregular.

Plan Template Manager

    Any plan can be exported as a template that can be used for future planning.
  • Some beam parameters can be edited during creation of a template or when imported.
  • New beams can be added or existing ones deleted in the plan template manager window.
  • Plan template allows the user to set the Isocenter of the beams to the Patient Origin, Center of Extents, Center of Mass, Cross Section of Markers, and Center of Markers.

Beam Setup

  • Beams can be added, edited, or deleted with quick, easy mouse operations.
  • Opposing beam creation (Copy Invert Beam).
  • MLC, Block shapes associated with the opposing beam are automatically inverted with one mouse click.
  • Beam summary can be displayed and updated in real time.
  • Display of current or all beams can be turned on or off.
  • All the parameters of the beams are available in the beam summary to view or quickly edit.
  • MUs are displayed for the calculated beams in the beam summary.
  • Support for hot-keys such as add, copy and delete beams.
  • Unlimited number of beams.
  • Real-time weighting and normalization

Other

  • Secured plan acceptance
  • Patient and planning data is file/folder based and can be sent back and forth via network or internet to satellite sites or laptops.
  • Overlap of the target volume with other volumes can be calculated and displayed in both cm3 and percentage of target volume.
  • Rotational beams and asymmetrical fields supported.

Features

DAO IMRT – Additional features

  • The delivery constraints on individual aperture shapes (formed either by MLC leaves or by movable Jaws) are directly taken into account into optimization process as well as the weights of the individual aperture shapes. There is no conversion from fluence maps to aperture shapes.
  • Simulated Annealing based optimization
  • Quick convergence ability of the algorithm reduces the time for optimization
  • 3mm x 3mm x CT Slice Thickness Voxel Spacing
  • Optimization option is a license controlled module that opens up as an additional window in the Prowess Panther treatment planning system.
  • Single window interface displaying the following features
  • Interactive, Real time DVH graphs display.
  • Graphical User interface to set and alter constraint settings in real time
  • Real time objective function in graphical display
  • Equivalent Uniform Dose (EUD) representation
  • Instant classification of organs into any of the three categories
    • Target Volumes
    • Critical Volumes
    • Ignored Volumes
  • User could add and edit any of the following definitions for the constraints either via GUI or keyboard entry
    • Points Less Than
    • Points Greater Than
    • Points Between
    • Points Outside
    • DVH Below
    • DVH Above
    • EUD Less Than
    • EUD Greater Than
  • Individual weighting for each constraints
  • Graphs can be viewed in Black or White background option
  • Option to store current constraint set into library and retrieve for future usage
  • Optimization can be paused and resumed as needed
  • On the fly optimization – Change constraints and weighting without pausing the optimization.
  • Customizable Number of Segments per beam
  • Display of fluence maps for each selected segment of the beam in BEV
  • Tabular display of sequential fluences for the segments of each beam
  • MU Display for each of the segment in total or per fraction options
  • Ability to allow user to change the sequence of the segments in any of the beams
  • Collapsed Cone Convolution Superposition with/without heterogeneity correction
  • DVH and Monitor Units (MU) can be scaled by using a slide bar for easy plan normalization
  • Constraints can be set for beam MU, segment MU and segment area

IMRT QA

  • Customizable IMRT QA settings such as:
    • Predefined isocenter
    • Set gantry to point to floor
    • Automatically start calculation
    • Separate plan for each beam
  • Single click export of IMRT plans to QA phantom
  • Supports scanned QA Phantoms
  • Supports Mapcheck, RadCal and other QA software
  • Monitor Units (MU) can be edited

Recommended Hardware Requirements

  • 2 x Quad-Core Xeon E5450 3GHz
  • RAM Memory: 4 GB
  • DVD±RW (±R DL) / DVD-RAM
  • Hard Disk: 250GB
  • Video Card: ATI Radeon HD2600 PRO
  • Ethernet Card: Gigabit Ethernet
  • Monitor: Capable of displaying (1280 x 1024 pixels) and 32 bit Color




 

  
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