Table 3.

Diffusion tensor imaging parameters with standard acquisition

		Baseline (n = 110)			RTP (n = 64)
		Injured	Healthy	p-value	Injured	Healthy	p-value
λ1 (10−3 mm2/s)	High-b	2.19 ± 0.14	2.03 ± 0.14	< 0.001	2.09 ± 0.11	2.04 ± 0.15	< 0.001
	IVIM-cor	2.18 ± 0.14	2.03 ± 0.15	< 0.001	2.09 ± 0.11	2.04 ± 0.14	< 0.001
λ2 (10−3 mm2/s)	High-b	1.73 ± 0.15	1.56 ± 0.09	< 0.001	1.61 ± 0.09	1.57 ± 0.09	0.015
	IVIM-cor	1.72 ± 0.16	1.55 ± 0.10	< 0.001	1.60 ± 0.09	1.57 ± 0.09	0.022
λ3 (10−3 mm2/s)	High-b	1.48 ± 0.15	1.34 ± 0.10	< 0.001	1.38 ± 0.10	1.36 ± 0.10	0.302
	IVIM-cor	1.47 ± 0.16	1.34 ± 0.11	< 0.001	1.37 ± 0.10	1.36 ± 0.10	0.245
MD (10−3 mm2/s)	High-b	1.80 ± 0.13	1.64 ± 0.09	< 0.001	1.69 ± 0.08	1.66 ± 0.09	0.007
	IVIM-cor	1.79 ± 0.14	1.64 ± 0.10	< 0.001	1.69 ± 0.08	1.65 ± 0.08	0.006
Fractional anisotropy	High-b	0.20 ± 0.04	0.22 ± 0.04	0.008	0.22 ± 0.04	0.21 ± 0.04	0.078
	IVIM-cor	0.21 ± 0.04	0.22 ± 0.05	0.010	0.22 ± 0.04	0.21 ± 0.05	0.137
f	IVIM-cor	0.06 ± 0.02	0.06 ± 0.02	0.334	0.06 ± 0.02	0.06 ± 0.02	0.774

Group averaged diffusion tensor imaging parameters with the standard acquisition for injured and contralateral healthy muscles at baseline and return-to-play and both fitting methods and the p-values of the Wilcoxon signed-rank test, comparing the injured and healthy parameters. Data are mean ± standard deviation of the data acquired with the standard scan without multiband acceleration. Significant p-values are indicated in bold

f IVIM-derived perfusion fraction, IVIM Intravoxel incoherent motion, IVIM-cor IVIM-corrected DTI, λ₁, λ₂, λ₃ diffusion tensor eigenvalues, MD Mean diffusivity, RTP Return-to-play