Panther MLC IMRT
Revolutionary Optimization Technology
Prowess Panther DAO IMRT takes IMRT to the next level with Direct Aperture Optimization (DAO). Powered by a new 3D convolution/superposition dose calculation engine, which includes all the delivery constraints within the optimization process, Prowess Panther DAO IMRT is the only true WYSIWYG (What You See is What You Get) inverse planning system on the market, and the first and only commercial treatment planning system to incorporate DAO.
SIMPLIFIED IMRT
Typically, traditional IMRT techniques use a two-step approach to arrive at a final treatment plan. First, a fluence map is optimized from each beam direction (optimization). Then, the set of aperture shapes that most closely reproduces each fluence map (leaf sequencing) is determined. This approach is flawed because the delivery constraints are not enforced during the optimization; and the number of segments is typically 2-3 time the number of intensity levels.
BENEFITS OF PROWESS DAO IMRT
| Up to 65% Reduction in Segments required to deliver treatment. |
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| Up to 60% Reduction in Monitor Units (MUs) required to deliver treatment. |
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| Less time required to deliver treatment. |
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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