Evidence map›Paper›PMID 40356535›Full record

ArticleUltrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology2025

Is two-dimensional oblique parasagittal ultrasound imaging valid for levator ani muscle assessment?

K L Shek, H P Dietz

Abstract readValidation Study
In one paragraph

Article in Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

2 authors.

K L ShekDepartment of Obstetrics and Gynaecology, Liverpool Clinical School, Western Sydney University, Sydney, Australia.ORCID 0000-0001-6836-4474
H P DietzSydney Urodynamic Centres, Sydney, Australia.ORCID 0000-0002-2211-6149

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the validity of two-dimensional (2D) oblique parasagittal ultrasound imaging to assess levator ani muscle avulsion.

methodsThis was a cross-sectional prospective study of women attending a tertiary urogynecological service between February 2021 and August 2022. All women underwent a standardized interview, pelvic organ prolapse quantification (POP-Q) assessment and four-dimensional transperineal ultrasound. 2D oblique parasagittal ultrasound imaging was performed by rotating the transducer 10-20° from the midline to line up the main transducer axis with the fiber direction of the puborectalis muscle, followed by a full parasagittal sweep of the hiatus at rest. Postprocessing of archived ultrasound volume data was performed at a later date, blinded to all other data. Findings were compared with levator ani assessment results obtained previously using three-dimensional tomographic ultrasound imaging (TUI). Diagnosis of levator ani avulsion on TUI and oblique parasagittal imaging was analyzed for associations with pelvic organ prolapse (POP).

resultsThe datasets of 484 women were analyzed. Mean age was 58 (range, 16-94) years, mean body mass index was 30 (range, 17-65) kg/m

conclusionThere was limited agreement between tomographic and oblique parasagittal ultrasound diagnosis of levator ani muscle avulsion. The latter technique has some validity for levator ani assessment but is clearly less valid than TUI. © 2025 The Author(s). Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Indexed as

Pelvic FloorPelvic Organ ProlapseAdultAgedCross-Sectional StudiesFemaleHumansImaging, Three-DimensionalMiddle AgedProspective StudiesReproducibility of ResultsUltrasonographyavulsionlevator anioblique parasagittalpelvic organ prolapsetomographic ultrasoundtwo‐dimensional ultrasound

Identifiers

PMID40356535
PMCPMC12209693

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