To find the most vulnerable component of levator muscle, this research compared the levator ani muscle which contains pubovisceral, puborectal and iliococcygeal muscles between the control group and the patient group by using DTI. 49 female PFD (pelvic floor dysfunction) patients and 51 female healthy subjects underwent DTI imaging on a 3.0T MR system. A significant difference was found in the FA value of the right pubovisceral muscle between the two groups, and therefore, this part are more likely to be damaged comparing with other compartments of levator ani muscle. DTI with fiber tractography permits the evaluation of the injuries of levator ani muscle, which has a certain effect in revealing the pathogenesis of the female pelvic floor dysfunction.
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