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Intraobserver and interobserver reliability of the three-dimensional ultrasound imaging of female urethral sphincter using a translabial technique

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Abstract

Introduction and hypothesis

The aim of the study was to assess the interobserver and intraobserver reliability of translabial 3D ultrasound imaging of the urethral sphincter in non-pregnant nulliparous asymptomatic women.

Methods

A study using a 3D translabial ultrasound on thirty-seven women was performed. Urethral sphincter parameters were measured by the same experienced clinician 2 weeks apart. Multiple axial cross-sectional areas at 1-mm distances were used to calculate urethral sphincter volumes. The same measurements were carried out by a second experienced clinician to assess the interobserver reliability.

Results

We found an excellent intraobserver reliability (interclass correlation coefficient, ICC >0.8) and good interobserver reliability (ICC >0.6).

Conclusion

The described technique using multiple axial cross-sectional areas at set distances and a translabial approach is a reliable and accurate tool in the evaluation of the urethral sphincter. This should be used instead of mathematical formulas as the urethral sphincter is not a uniform geometrical sphere. The technique and values reported may help clinicians in the assessment of women with lower urinary tract disorders.

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Acknowledgement

The authors are grateful for the support from the NIHR Biomedical Research Centre funding scheme.

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Authors and Affiliations

  1. Department of Urogynaecology, Cambridge Wing, St. Mary’s Hospital, Praed Street, W1 1NY, London, UK

    G. Alessandro Digesu, Nishee Calandrini, Alexandros Derpapas, Pasquale Gallo, Shahla Ahmed & Vik Khullar

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  1. G. Alessandro Digesu
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  2. Nishee Calandrini
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  3. Alexandros Derpapas
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  4. Pasquale Gallo
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  5. Shahla Ahmed
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  6. Vik Khullar
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Corresponding author

Correspondence to G. Alessandro Digesu.

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Digesu, G.A., Calandrini, N., Derpapas, A. et al. Intraobserver and interobserver reliability of the three-dimensional ultrasound imaging of female urethral sphincter using a translabial technique. Int Urogynecol J 23, 1063–1068 (2012). https://doi.org/10.1007/s00192-012-1669-3

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  • DOI: https://doi.org/10.1007/s00192-012-1669-3

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