Levator ani muscle (LAM) injury has been known to be highly associated with vaginal delivery, the natural recovery course of injured LAM is unclear recurrently. Diffusion tensor imaging (DTI) with fiber tracking is a useful noninvasive MRI technique, which can be used to assess pelvic floor muscles injury and recovery quantitatively, and the fiber tract can display the direction and thickness of LAM fibers. In this study, we tried to apply DTI imaging to explore the natural recovery course of LAM injury during vaginal delivery. And the results showed that the injured LAM during vaginal delivery has some degree of repair as time goes on.
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