MedINRIA (Medical Image Analysis Platform from Asclepios(http://www-sop.inria.fr/asclepios/software/MedINRIA )) is a platform containing a set of softwares, called modules, developed by the Asclepios team. It aims at providing state-of-the-art algorithms dedicated to medical image processing and visualization for clinicians. Efforts have been made to simplify the user interface, while keeping high-level algorithms. Each application is called a module, and can be loaded dynamically from a single main window. The platform uses ITK(http://www.itk.org ) for image processing, VTK(http://www.vtk.org) for visualization, and wxWidgets(http://www.wxwidgets.org ) for the user interface. MedINRIA is freely available from the Asclepios website for Microsoft windows XP, Linux Fedora Core 3.
Two different modules are currently available:
DTI Track module: The DTI Track module provides all necessary tools for in-deep DT-MRI analysis and fiber tracking. From diffusion tensor field estimation, to scalar coefficient computation (ADC/FA), tensor smoothing, and fiber bundle extraction. This module uses Log-Euclidean metrics to process tensors, see Fig. 1 , which are protected by a patent(Patent Filing Number: 0503483).
Tensor Viewer module: The Tensor Viewer is complementary to DTI Track. It allows 3D tensor field visualization and geometry correction (flip among an axis). Tensor fields are displayed slice by slice, in three possible orientations (axial, sagittal and coronal). Various primitives are available for visualization : arrows, cubes, spheres, superquadrics, etc.
Several modules are underway, and will be plugged in MedINRIA. A registration module that will provide manual and semi-automatic registration will be ready very soon. See Fig. 2 .