Virendra Radheshyam Mishra1,2, Xin Fan2,
Hao Huang3,4
1Biomedical Engineering, The University
of Texas at Arlington , Arlington, TX, United States; 2Advanced
Imaging Research Center, The University of Texas Southwestern Medical Center , Dallas, TX,
United States; 3Advanced Imaging Research Center, The University
of Texas Southwestern Medical Center , Dallas, TX, United States; 4Department
of Radiology, The University of Texas Southwestern Medical Center , Dallas,
TX, United States
Fiber
volume and fiber count are two important metrics derived from DTI
tractography. However, no systematic description of the relationship between
these two measures and noise or resolution has been reported so far. In this
study, we measured fiber count and fiber volume of left cingulum with DTI
datasets of different SNR and resolution. Our results indicate that
resolution plays a more important role on both measures than SNR. With a
normal range of SNR, both measures are almost constant for a normal
resolution. Compared to fiber count, fiber volume is a more stable measure.
Keywords