Abstract
The levator ani is the most important muscle in the pelvic floor. This pilot study using 3D power Doppler aimed to identify normal vascularization of the puborectalis/pubovisceralis muscle at its insertion in nulliparous and premenopausal women. Forty nulliparous and premenopausal women were evaluated at the Gynecological Unit of a tertiary hospital. All women underwent a translabial ultrasound (US) with 3D power Doppler. Pubic insertion of the puborectalis/pubovisceralis muscle was assessed in the axial plane, and vascularization index (VI), flow index (FI), and vascularization-flow index (VFI) were calculated bilaterally. Volumes were analyzed offline by two independent observers, and interobserver agreement and correlation between variables was calculated. A high, statistically significant, correlation was found between the three US indices on each side (p < 0.005). No correlation was found between the US index and either of the demographic parameters of body mass index [(BMI), p > 0.241], or age (p > 0.398). The degree of correlation between the same index on the different sides was not statistically significant. Puborectalis/pubovisceralis muscle vascularization at its insertion can be identified using 3D Doppler US, but values differ substantially from those of the contralateral side.
Published Version
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