DBP:Harvard:Software:Minutes:4-26-06

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DTI Meeting Minutes | April 26, 2006


Present: Doug, Marc, Katharina, Sylvain, Kang Uk, Gordon, CF, Marek, Gudrun


  • Slicer
    • Slicer26 should be able to read NRRD DWIs now
    • doDTI gives you mean FA, would be nice to display this in Slicer somewhere


  • New protocol: scanning today?
    • required that a licensed MD approve every scan
    • sequence will be DICOM files, probably same format as before, same procedure for downloading
    • Marek meeting with Nan-Quei at 1:30 today at the SPL to talk about the protocol
    • Will try multiple scans varying b-value and number of directions
      • Will try 750 and 1000 with minimum of 32 directions; also try 50 directions


  • Anterior Commissure
    • would be nice to have an extra scalar map with orientation overlayed with the output of this method
    • Gordon will finish creating these maps and send to Sylvain


  • Cingulum Bundle histograms of FA/Mode
    • note that people tend to overestimate how linear the ROI will be.. mostly orthotropic
    • now that we know that anisotropy is a bi-variate quantity, still need to answer the question about how to do statistics on this; non-parametric tests?
    • would be helpful to have comparison of different white matter ROIs, plotted in this space
      • Corpus callosum, cingulum bundle, STG white matter, STG gray matter, CSF; these ROIs will be sent to Gordon


  • Kang Uk - problem with tensor coregistration?
    • script was updated by Mattan in slicer-nightly, but still doesn't seem to be working
    • will try a basic co-registration of two tensor sets in the same direction