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CAT3D is a radiotherapy planning system. |
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| The new
7.02 version offers: (see
CAT3D update info) |
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IMRT Module (Optional, not included in the standard full version). Add dose distributions from up to 5 plans. Automatic image matching (without POIs). DVH for Brachytherapy planning.
New model for head scatter factor, improving monitor unit calculations for very elongated fields. Multimodality image matching using Mutual Information Maximization. The image fusion module incorporated the state of the art method for image matching.
For the multi modality image fusion, "Import ROI" was introduced, to import
ROIs that were previously drawn in the other modality.
Better model for correcting the scatter contribution from a pencil with non unit density.
Improved access control to planning files, for using a central patient database with several CAT3Ds
or simulator in a network.
Shadowed Isodoses.
Animated GIF generation when the export option is used for 3D animation Comparative dose-volume histogram of various ROIs Support for photons and electron beams. Simultaneous use of various energies
in the same plane Asymmetrical collimators Inhomogeneity correction based
on the Hounsfield density Collimator angle customization. Protocol information exported to an external file. Useful for interfacing CAT3D with other device or program, such as clinic database. ROI interpolation. If the anatomic structure being delineated shows little changes in successive slices, the user can draw one slice and jump other. After closing the whole ROI, the interpolation creates new ROI segments for the slices previously ignored. Creation of a POI centered in the ROI for the three main axis (x,y,z). Can be useful to locate a possible isocenter for the ROI. |
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| CAT3D resources: |
All used algorythms are based on tridimensional models (3D). | ||||||
| Image processing Dosimetry for teletherapy Dosimetry for brachitherapy |
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 CT, axial with isodose curves |
CAT3D shows
isodose curves overlapped with the patient's anatomy for both computer
tomography (CT) and magnetic resonance (MRI). Click to enlarge picture |
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| The image processing module allows the generation of sagittal, coronal or arbitrary space-orientated reconstruction and the dosimetry module generates the dose distribution related to any of these reconstructed plans. |
 Sagittal reconstruction with isodose curves Click to enlarge picture |
| For the generation of conformal beams, CAT3D generates digitally reconstructed radiographies (DRR) in beam eye view - BEV. | ||||||
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CAT3D's DRR can be generated by simulating diagnosis
X-rays (similar to the simulator's in energy) or high energy X-rays
(2 MeV) to obtain images like the simulator films' in the LINAC
itself.
Click to enlarge picture |
 DRR with collimator projection and isodose on the isocenter level |
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The 3D representantions
in perspective are also among the product's resources and allow to
fuse in space: anatomy, isodose surfaces and regions of interest defined
by the user. Click to enlarge picture |
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The dose/volume histograms allow a detailed study of how a
region defined as a ROI is being achieved.
Click to enlarge picture |
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