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. Author manuscript; available in PMC: 2009 Nov 18.
Published in final edited form as: Proc IEEE Int Symp Biomed Imaging. 2007 Apr 12;4:772–775. doi: 10.1109/ISBI.2007.356966

Table 1.

Statistics of the deviation angles ψ between the computed and true fiber orientations in presence of noise.

From proposed method
ψ(σ = .02) ψ(σ = .04) ψ(σ = .06)
1 fiber 0.65 ± 0.39 1.19 ± 0.65 1.66 ± 0.87
2 fibers 1.18 ± 0.66 2.55 ± 1.29 3.85 ± 2.12
1.30 ± 0.66 2.76 ± 1.34 3.63 ± 1.91
3 fibers 4.87 ± 3.23 8.59 ± 5.82 11.79 ± 6.86
5.81 ± 3.61 7.70 ± 5.02 11.27 ± 6.36
4.92 ± 3.32 7.94 ± 4.59 12.57 ± 7.09
From QBI
ψ(σ = .02) ψ(σ = .04) ψ(σ = .06)
1 fiber 1.28 ± 0.75 3.34 ± 1.97 5.94 ± 3.19
2 fibers 2.39 ± 1.26 4.82 ± 2.44 7.95 ± 4.45
2.30 ± 1.10 4.94 ± 2.15 7.49 ± 3.88
3 fibers 10.80 ± 5.59 12.15 ± 4.42 20.21 ± 11.10
11.59 ± 5.44 13.07 ± 4.74 19.54 ± 11.80
11.66 ± 5.18 12.25 ± 4.93 20.36 ± 11.50