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Multimodal measurements of levator bowl volume in nulligravid asymptomatic women: endovaginal ultrasound versus MRI

Introduction and hypothesis Measurements of levator bowl volume using advanced imaging, may be predictive of pelvic floor muscle function. The aim of this study was to compare the volume of the levator bowl using both magnetic resonance imaging (MRI) and endovaginal ultrasound (EVU) of healthy asymp...

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Bibliographic Details
Published in:International Urogynecology Journal 2023-07, Vol.34 (7), p.1627-1633
Main Authors: Chill, Henry H., Martin, Liam C., Abramowitch, Steven D., Rostaminia, Ghazaleh
Format: Article
Language:English
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Summary:Introduction and hypothesis Measurements of levator bowl volume using advanced imaging, may be predictive of pelvic floor muscle function. The aim of this study was to compare the volume of the levator bowl using both magnetic resonance imaging (MRI) and endovaginal ultrasound (EVU) of healthy asymptomatic women. Methods All participants underwent a comprehensive interview including completion of the Pelvic Floor Distress Inventory Questionnaire-20 questionnaire, pelvic examination with a pelvic organ prolapse quantification evaluation, MRI, and EVU. The pelvic floor was segmented using Slicer and the MRI segmentations were trimmed using two methods: soft-tissue landmarks and the field of view (FOV) of the ultrasound volume. The levator bowl volume of the 3D segmented shapes was measured using Blender’s 3D printing toolkit. Normality was tested using the Shapiro–Wilks test and comparisons were made using self-paired t tests. Results The final analysis included 19 patients. Levator bowl volume measured via MRI was larger than that measured in EVU (46.1 ± 7.9 cm 3 vs 27.4 ± 5.9 cm 3 , p
ISSN:0937-3462
1433-3023
DOI:10.1007/s00192-022-05441-w