title: Dynamic shape of the female urethra during micturition. Clinical methods.
abstract: Densitometry of the x-ray image provides a suitable technique for clinical quantification of the urethral shape during all stages of voiding. The technique of cystourethrographic densitometry is applied to determine the cross-sectional shape of the human female urethra during various phases of voiding. Errors that may occur because the x-rays are not perpendicularly incident to the urethral plane are considered and a method for their minimization is indicated.
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D014521:Urethra / Q000000981:diagnostic imaging / Q000502:physiology*; D014554:Urination; D014563:Urodynamics