Levator avulsion using a tomographic ultrasound and magnetic resonance–based model - 28/08/11
, Yan F. Song, MD a, Zi Q. Chen, MD b, Ming Ma, MD b, Hui J. Huang, MD a, Jin H. Chen, PhD a, Yun M. Li, PhD b
Reprints: Rong R. Zhuang, MD, Fuzhou General Hospital, Department of Obstetrics and Gynecology, West Second Ring North Rd. #156, Fuzhou, Fujian 350025 ChinaRésumé |
Objective |
Delivery-related levator avulsion can cause pelvic floor dysfunction. We compared agreement between tomographic ultrasound and magnetic resonance–based models for the detection of levator defects.
Study Design |
Sixty-nine Chinese women with pelvic organ prolapse were assessed prospectively by 3-dimensional ultrasound scans and magnetic resonance imaging. Levator-urethra gap (LUG), levator-symphysis gap (LSG), and puborectalis attachment width were measured offline with state-of-the-art software. Interobserver variability and agreement between the 2 methods were determined.
Results |
Interobserver repeatability was moderate-to-excellent for all parameters that were measured with both methods and agreement between methods in diagnosing levator avulsion. LUG and LSG measurements were significantly higher in women with a levator avulsion. With a diagnosis of complete levator avulsion, receiver operating characteristics analysis suggested a cutoff of 23.65 mm for LUG and 28.7 mm for LSG.
Conclusion |
Levator avulsion can be diagnosed reliably by tomographic ultrasound scanning and magnetic resonance imaging evaluation, and linear measures, such as LSG and LUG, can be proxy measurements for avulsion.
Le texte complet de cet article est disponible en PDF.Key words : levator ani, magnetic resonance imaging, pelvic organ prolapse, tomographic ultrasound imaging
Plan
| Supported by Grant no. 2010Y0046 from the Fujian Provincial Key Projects Foundation of China and by Grant no. 2010Y2005 from Fujian Science and Technology Foundation of China. |
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| Cite this article as: Zhuang RR, Song YF, Chen ZQ, et al. Levator avulsion using a tomographic ultrasound and magnetic resonance–based model. Am J Obstet Gynecol 2011;205:232.e1-8. |
Vol 205 - N° 3
P. 232.e1-232.e8 - septembre 2011 Retour au numéro
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