A New Automated Ultrasound Quantification of Urethral Mobility for Stress Urinary Incontinence: A Feasibility Study

Area of Science:

• Biomedical engineering
• Medical imaging
• Urology

Background:

• Stress urinary incontinence (SUI) significantly impacts quality of life.
• Urethral mobility is a key factor in SUI.
• Transperineal ultrasound (TPUS) visualizes urethral movement, but quantification is limited.

Purpose of the Study:

• To develop an automated system for tracking and quantifying urethral movement using TPUS.
• To provide richer information and reduce inter-observer variability in SUI measurements.

Main Methods:

• Developed computer vision software using corner detection and optical flow algorithms.
• Utilized TPUS cine loops from commercial scanners.
• Implemented a symphysis pubis reference system to correct for probe movement.

Main Results:

• The system successfully tracked urethral motion during Valsalva maneuvers.
• Accurately quantified complex movements, including directional shifts, rotations, and trajectories.
• Demonstrated high intra- and inter-rater reliability (ICCs > 0.89 and 0.5).

Conclusions:

• Automated quantification of urethral mobility advances SUI understanding, diagnosis, and treatment.
• This methodology confirms the feasibility of objective urogenital movement measurement.
• Potential to tailor more effective SUI treatment strategies.