1Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, United States, 2Department of Physics, Indiana University, Bloomington, IN, United States
Due to the complexity of brain microstructure
and organization, the validation of tractography results remains a challenging
problem. In this work, effect of SNR and b value of diffusion imaging on the variability and errors of tractography was
evaluated through a software phantom developed by
Tractometer. Three fiber tracking algorithms based on DTI, CSD, and Q-sampling were tested.
Large false positive and false negative rate was seen for all methods, regardless of SNR or b value. A moderate thresholding can reduce false positive
rate and total error rate.
