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

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 pe...

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Bibliographic Details
Published in:International Urogynecology Journal 2012-08, Vol.23 (8), p.1063-1068
Main Authors: Digesu, G. Alessandro, Calandrini, Nishee, Derpapas, Alexandros, Gallo, Pasquale, Ahmed, Shahla, Khullar, Vik
Format: Article
Language:English
Subjects:
Adult
Female
Gynecology
Humans
Imaging, Three-Dimensional - methods
Medicine
Medicine & Public Health
Middle Aged
Observer Variation
Original Article
Parity
Reproducibility of Results
Ultrasonography - methods
Urethra - diagnostic imaging
Urology
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Summary: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.
ISSN:0937-3462
1433-3023
DOI:10.1007/s00192-012-1669-3