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Abstract #4015

How Many Streamlines Should I Use?

Matthew George Liptrot1, Tim Bjrn Dyrby1

1Danish Research Centre for Magnetic Resonance (DRCMR), Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark

In probabilistic streamline tractography, the choice of the number of streamlines to employ is the source of much confusion as no feasible analytical solution exists, and ensuring sufficient sampling is therefore problematic. Herein we describe an investigation into the influence that the number of streamlines imposes upon free-tracking, compare the parameters effect within Anatomical Connectivity Map generation and show how, via use of the ICE-T Framework (a recent technique to iterate conventional tractography routines), as few as 10 streamlines per voxel can be sufficient to overcome the omnipresent problem of path length dependency.