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The factors affect Diffusion-weighted imaging (DWI) signals of the lumbar spine in men and women. The subplots illustrate the differences in fat fraction in men (A), age in women (B) and fat fraction in women (C) between the high and iso-low signal groups. Asterisks denote the significance level: * p < 0.05, ** p < 0.01, *** p < 0.001.
