Table 4.

Diffusion tensor imaging parameters with multiband-accelerated acquisition

			Baseline (n = 16)			RTP (n = 8)
			Injured	Healthy	p-value	Injured	Healthy	p-value
λ1 (10−3 mm2/s)	High-b	Standard	2.21 ± 0.17	2.00 ± 0.10	< 0.001	2.02 ± 0.08	1.97 ± 0.09	0.237
		Multiband	2.19 ± 0.17	1.98 ± 0.12	0.008	2.02 ± 0.08	1.96 ± 0.05	0.160
	IVIM-cor	Standard	2.21 ± 0.17	2.02 ± 0.11	0.002	2.02 ± 0.07	1.99 ± 0.10	0.553
		Multiband	2.18 ± 0.18	1.98 ± 0.12	0.006	2.02 ± 0.08	1.96 ± 0.05	0.207
λ2 (10−3 mm2/s)	High-b	Standard	1.80 ± 0.19	1.55 ± 0.05	< 0.001	1.58 ± 0.09	1.51 ± 0.10	0.046
		Multiband	1.78 ± 0.18	1.54 ± 0.08	0.002	1.57 ± 0.09	1.50 ± 0.12	0.024
	IVIM-cor	Standard	1.80 ± 0.19	1.55 ± 0.05	0.001	1.57 ± 0.09	1.52 ± 0.10	0.173
		Multiband	1.77 ± 0.19	1.54 ± 0.08	0.004	1.55 ± 0.10	1.50 ± 0.11	0.116
λ3 (10−3 mm2/s)	High-b	Standard	1.57 ± 0.19	1.33 ± 0.07	0.001	1.36 ± 0.09	1.31 ± 0.13	0.140
		Multiband	1.55 ± 0.20	1.31 ± 0.10	0.004	1.31 ± 0.12	1.24 ± 0.19	0.325
	IVIM-cor	Standard	1.56 ± 0.19	1.32 ± 0.08	0.001	1.35 ± 0.09	1.31 ± 0.12	0.105
		Multiband	1.53 ± 0.21	1.30 ± 0.10	0.005	1.28 ± 0.13	1.23 ± 0.19	0.575
MD (10−3 mm2/s)	High-b	Standard	1.86 ± 0.17	1.63 ± 0.05	< 0.001	1.65 ± 0.08	1.60 ± 0.10	0.127
		Multiband	1.84 ± 0.18	1.61 ± 0.08	0.003	1.63 ± 0.08	1.57 ± 0.11	0.030
	IVIM-cor	Standard	1.86 ± 0.18	1.63 ± 0.06	< 0.001	1.65 ± 0.08	1.61 ± 0.10	0.260
		Multiband	1.83 ± 0.19	1.61 ± 0.08	0.004	1.62 ± 0.08	1.56 ± 0.11	0.063
Fractional anisotropy	High-b	Standard	0.18 ± 0.04	0.21 ± 0.04	0.026	0.21 ± 0.04	0.21 ± 0.04	0.916
		Multiband	0.18 ± 0.04	0.22 ± 0.05	0.049	0.23 ± 0.06	0.24 ± 0.07	0.498
	IVIM-cor	Standard	0.18 ± 0.04	0.22 ± 0.04	0.033	0.21 ± 0.04	0.22 ± 0.03	0.590
		Multiband	0.19 ± 0.05	0.22 ± 0.05	0.065	0.23 ± 0.06	0.24 ± 0.07	0.497
f	IVIM-cor	Standard	0.06 ± 0.01	0.06 ± 0.02	0.822	0.07 ± 0.03	0.05 ± 0.01	0.223
		Multiband	0.06 ± 0.01	0.06 ± 0.02	0.339	0.08 ± 0.04	0.07 ± 0.02	0.416

Group averaged diffusion tensor imaging parameters for the subgroup who received a multiband accelerated scan. Data are mean ± standard deviation of the data acquired with the standard scan and with MB acceleration. The p-value of the Wilcoxon signed-rank test, comparing injured and healthy parameters, is shown (significant p-values in bold)

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