Time course of spinal cord injury (SCI) on apparent diffusion coefficient (ADC). Rats were induced SCI by T5 laminectomy and compression (50 g, 1 min). ADC map was used to assessment the injured level. Data are presented as mean ± S.E.M of six rats. Significance for the time-dependent effect after SCI treatment was calculated by ANOVA. *P < 0.05, significantly different from untreated control samples.