Table 1.
Mean DTI values ± SD were calculated from five female subjects for each muscle
| FA | MD * | λ1 * | λ2 * | λ3 * | # pointsa | # fibresb | |
|---|---|---|---|---|---|---|---|
| Anal sphincter | 0.30 ± 0.04 | 1.30 ± 0.08 | 1.70 ± 0.08 | 1.24 ± 0.08 | 0.95 ± 0.11 | 22566 | 457 |
| Urethral sphincter | 0.23 ± 0.02 | 1.73 ± 0.12 | 2.15 ± 0.17 | 1.69 ± 0.11 | 1.36 ± 0.10 | 9241 | 174 |
| Pubovisceral muscle | 0.28 ± 0.04 | 1.49 ± 0.47 | 1.89 ± 0.51 | 1.45 ± 0.47 | 1.12 ± 0.43 | 60550 | 1035 |
| Perineal body | 0.27 ± 0.04 | 1.32 ± 0.19 | 1.67 ± 0.17 | 1.28 ± 0.21 | 0.99 ± 0.20 | 3896 | 97 |
| Internal obturator muscle | 0.27 ± 0.01 | 1.51 ± 0.11 | 1.93 ± 0.13 | 1.43 ± 0.09 | 1.16 ± 0.10 | 89330 | 888 |
FA Fractional Anisotropy; MD Mean Diffusivity
* MD, λ1, λ2, λ3 are in units of [×10−³ mm²/s]
aRefers to the mean number of points from which DTI parameters are calculated
bRefers to the mean number of fibres per isolated muscle