Abstract #2854
Studying white matter tractography reproducibility through connectivity matrices
Gabriel Girard 1,2 , Kevin Whittingstall 3 , Rachid Deriche 2 , and Maxime Descoteaux 1
1
Sherbrooke Connectivity Imaging Lab (SCIL),
Universit de Sherbrooke, Sherbrooke, Quebec, Canada,
2
Project
Team Athena - INRIA, Sophia Antipolis, France,
3
Department
of Diagnostic Radiology, Faculty of Medicine and Health
Science, Universit de Sherbrooke, Sherbrooke, Quebec,
Canada
In this study, we investigate the reproducibility of the
connectivity matrix, resulting from different
tractography parameters. We vary the number of
streamlines used to construct the matrix in cortical to
cortical connectivity and analyze its effects. We show
that the reproducibility of the connectivity is
surprisingly similar across tractography pipeline. In
all cases, connectivity matrices tend to stabilize using
more than 100,000 streamlines. We found that the
analysis of the reproducibility of tractography is a
first step to find which tractography pipeline is more
characteristic of the underlying anatomical structure.
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