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Table 3 Median, interquartile range (IQR), and range (minimum–maximum) values on the DTI metrics of the 28 male study patients, for each analyzed structure of the urethral complex

From: Diffusion tensor-based fiber tracking of the male urethral sphincter complex in patients undergoing radical prostatectomy: a feasibility study

  Proximal sphincter Distal sphincter Membranous urethra p value
FA 0.37; 0.04 [0.31–0.46] 0.32; 0.04 [0.25–0.37] 0.33; 0.06 [0.22–0.49] 4.94e-6 *
AD 2.07; 0.18 [ 1.89–2.56] 2.08; 0.20 [1.90–2.75] 1.89; 0.22 [1.58–2.70] 6.18e-5 *
MD 1.51; 0.16 [1.37–1.91] 1.58; 0.19 [1.39–2.06] 1.41; 0.16 [1.17–1.99] 4.70e-5 *
RD 1.23; 0.15 [1.08–1.58] 1.30; 0.18 [1.13–1.71] 1.23; 0.19 [0.99–2.47] 1.12e-2 *
Tract density 1.07; 0.96 [0.23–2.62] 0.28; 0.21 [0.03–0.69] 5.57; 7.61 [0.35–52.90] 9.23e-13 *
Tract 78.6; 17.16 [5.93–118..94] 55.52; 6.55 [28.71–65.88] 26.10; 7.71 [9.82–34.8] 1.44e-15*
  1. Tract density is expressed in tracts/mm3; Tract length in millimeters (mm); Diffusivity measures—AD, MD, and RD—in 10–3 mm2/s; FA is dimensionless. ANOVA (or the nonparametric Kruskal–Wallis test *) p values for the comparison of each DTI metric between regions are shown on the last column—statistically significant results are highlighted in bold