N-Tools-Browser

Web-based Electrode Visualization

An extention of N-Tools-Elec, based on X Toolkit (XTK).

Demo (Beta)

• Visit search page.
• Type "fsMNI" for SubjectID, select UMB mode, and click "Load Data!" button (as showed below).
• In 3D view: mouse-left = rotate, mouse-wheel = zoom, shift+mouse-left = move, left-click sphere or bar = select & display elec or fmap properties.
• The orthogonal 2D slices in 3D view can be turned off by GUI (mark #1 in screenshot).
• The elec ID menu (#2) and 3D spheres (#3) are synchronized, selecting one will update the other.
• Some elec spheres and fmap bars may be beneath brain surface un-selectable, you can turn off brain surface (#4) to select them.
• Moving mouse cursor to an elec in 3D view will show its ID tags. Clicking #5 shows all ID tags.

Stage 1: Visualize brain surfaces and electrodes in browser from existing ntools_elec outputs

• Find toolbox for web-based visualization of Freesurfer files.
• Create database of existing MRI scans and electrode coordinates for web visualization.
• Convert ntools_elec outputs to XTK compatible format.
• Create web service for accessing ntools_elec outputs.

Stage 2: Edit and save attributes of electrodes in browser

• Create GUI for subject selection and 3D redering options.
• Assign and save different atrributes to the electrodes (e.g. functional mapping, seizure mapping, resection mapping, etc.).

Stage 3: Add user control

• Link to MCIT database of Kerbros ID/Password.
• Create white list of Kerbros ID for legit users.

Suggested features

• Render brain volume instead of cortical surface.
• Opacity control of brain surface
• Color-code fmap bars
• Display legend for color-code
• Color-code elecs on 2D slices
• Additional draw-down menu items for different types of fmap findings
• Adopt BIDS format in json file
• 3D tags
• Show multiple fmap bars for same elec-pairs
• Interpolate surface color with electrode attributes (e.g. Garma band strength).