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Table 2 Mean, standard deviation (sd) and coefficient of variance (CV) of FA by the four ROI methods separately

From: Impact of region-of-interest method on quantitative analysis of DTI data in the optic tracts

ROI method

Section 1

Section 2

Section 3

Mean ± sd

CV %

Mean ± sd

CV %

Mean ± sd

CV %

Manual b0

0.50 ± 0.09

18

0.67 ± 0.11

17

0.70 ± 0.09

12

FA-skeleton

0.51 ± 0.08

16

0.68 ± 0.09

14

0.73 ± 0.06

8

Manual T1W

0.44 ± 0.08

18

0.58 ± 0.09

16

0.56 ± 0.06

11

Tractography

0.41 ± 0.10

24

0.63 ± 0.11

18

0.62 ± 0.10

16