Table 3. Comparative Results of Qualitative and Quantitative Analyses between cDWI₈₀₀, sDWI₁₀₀₀, sDWI₁₅₀₀, and cDWI₁₅₀₀.

Parameters	cDWI800	sDWI1000	sDWI1500	cDWI1500	P	P*	P†	P‡	P§
Suppression of normal glandular tissue	2.34 ± 0.79	2.66 ± 0.78	3.32 ± 0.90	3.66 ± 0.78	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
Overall image quality	3.31 ± 0.88	3.33 ± 0.84	3.35 ± 0.81	3.73 ± 0.62	< 0.001	> 0.999	0.002	> 0.999	0.002
Lesion conspicuity	2.83 ± 0.96	3.09 ± 0.94	3.52 ± 0.92	3.39 ± 0.90	< 0.001	< 0.001	< 0.001	< 0.001	0.051
CDR (invasive and in situ cancer), %	84.0 (42/50)	86.0 (43/50)	90.0 (45/50)	90.0 (45/50)	0.061
CDR (invasive cancer), %	89.7 (35/39)	92.3 (36/39)	94.9 (37/39)	94.9 (37/39)	0.194
Cancer-to-parenchyma contrast ratio	0.47 ± 0.17	0.54 ± 0.16	0.63 ± 0.17	0.55 ± 0.18	< 0.001	< 0.001	0.009	0.004	0.961

Pooled data from two readers are mean ± standard deviation. P values were calculated using Friedman test for qualitative anlaysis, Cochran's Q Test for CDR, and one-way ANOVA for cancer-to-parenchyma contrast ratio. ^*p values indicate comparisons between cDWI₈₀₀ and sDWI₁₅₀₀ in post-hoc analysis, ^†p values indicate comparisons between cDWI₈₀₀ and cDWI₁₅₀₀ in post-hoc analysis, ^‡p values indicate comparisons between sDWI₁₀₀₀ and sDWI₁₅₀₀ in post-hoc analysis, ^§p values indicate comparisons between sDWI₁₀₀₀ and cDWI₁₅₀₀ in post-hoc analysis. CDR = cancer detection rate, cDWI₈₀₀ = conventional low b-value (800 s/mm²) diffusion-weighted imaging, cDWI₁₅₀₀ = conventional high b-value (1500 s/mm²) diffusion-weighted imaging, sDWI₁₀₀₀ = synthetic high b-value (1000 s/mm²) diffusion-weighted imaging, sDWI₁₅₀₀ = synthetic high b-value (1500 s/mm²) diffusion-weighted imaging