Fiber Viewer
NORA includes fiberviewer based on webGL and Babylon.js. The main features are:
- Supports TCK (mrtrix) and TRK (TrackVis) formats
- Fiber Manipulations
- Interactive selection by variable sized spheres
- Interactive deletion by variable sized sphere
- Selection and Deletion of tracts by ROIs
- Selection by sphere sets, (annotation type: poinset)
- Selection by waypoints (annotation type: freeline)
- Selection by DBS electrodes
- Rendering
- Vistmaps (fiber densities)
- Terminalmaps
- LIveupdate of visit/terminal maps
- Tracking
- a simplistic fibertracking algorithm based on tensor/orientationl fields is provided
Starting the fiber viewer
Choose an appropriate background image (like a T1w) and simply drop a tck or trk file into a viewport and the viewer will automatically switch to 3D mode a displays the fibers. An additional viewbar appears, which is associated with the loaded tracts. The viewbars allows you manipulate the streamlines, select subsets, etc. Here a short overview:
Fiber Selection
- Manually:
Hold Shift key pressed, a yellow sphere appears when hovering with mouse over the tracking, click to select all fibers going through the - By ROI:
- By Annotation: