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Strain Elastography as a New Method for Assessing Pelvic Floor Biomechanics
Jana Marie Kreutzkamp1, Sebastian Daniel Schäfer1, Susanne Amler2
1Department of Obstetrics and Gynecology, University of Münster, Münster, Germany.
Ultrasound in Medicine & Biology
|January 22, 2017
Summary
Strain elastography (SE) quantifies tissue elasticity. This study found that while para-urethral tissue elasticity correlates with urethral mobility, it does not directly correlate with urinary incontinence (UI) in women.
Area of Science:
- Urogynecology
- Medical Imaging
- Biomechanical Analysis
Background:
- Urinary incontinence (UI) is a common condition affecting women.
- Pelvic floor biomechanics, including urethral mobility and tissue elasticity, are implicated in UI.
- Strain elastography (SE) offers a non-invasive method to quantify tissue elasticity.
Purpose of the Study:
- To investigate the correlation between para-urethral tissue elasticity and urethral mobility.
- To determine if para-urethral tissue elasticity correlates with the incidence of urinary incontinence (UI).
- To assess the utility of SE in evaluating pelvic floor biomechanics related to UI.
Main Methods:
- Ninety-nine women underwent strain elastography (SE) to measure para-urethral tissue elasticity.
- Regions of interest (ROI A and ROI B) were defined, and an elasticity ratio (A/B) was calculated.
- Urethral mobility was quantified using angle measurements during stress and rest; UI was assessed via interview.
Main Results:
- SE analysis was feasible in all participants.
- The elasticity ratio (A/B) showed a significant correlation with urethral mobility (p < 0.001).
- Increased urethral mobility was associated with higher para-urethral tissue elasticity near the bladder neck and more UI symptoms (p = 0.04), but no direct correlation between UI and elasticity was found (p = 0.24).
Conclusions:
- Strain elastography effectively quantifies para-urethral tissue elasticity.
- Para-urethral tissue elasticity is correlated with urethral mobility.
- While increased urethral mobility and more elastic tissue near the bladder neck are linked to UI symptoms, SE did not directly correlate UI with overall urethral elasticity in this study.
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