2008 Winter Project Week Tractography Meeting Notes

Data quality, NAMIC DTI pipeline

• Issues?

ROI definitions and impact on different methods

• Force all methods to use the same ROIs? Should ROIs be much larger than the tract itself?

Methods:

• Streamline Slicer2 (Sonia)
• Streamline Fiberviewer (Casey)
• Stochastic Slicer3 (Tri)
• Shortest path (John)
• Shortest path, volumetric connectivity (Tom)

Review and define metrics to compare results, which methods to compare?

Current metrics: tensor invariants (FA, trace, mode, norm), volume, length.

• 12 different tracts
• Tracts voxelized
• Missing parts of a tract, how should be penalized?
• Statistics along the tracts, should we sum along the tract to get one measure?
• Distributions across the tract
• Atlas (Casey)