Related Experiment Video
Updated: Jun 2, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
Application of ultrasonography and the resistive index for evaluating bladder outlet obstruction in patients with
Hitoshi Shinbo1, Yutaka Kurita
1Department of Urology, Enshu Hospital, Chuo Naka-ku, Hamamatsu, Shizuoka, Japan.
Abstract:
Benign prostatic hyperplasia (BPH) is an extremely common and chronic condition that can lead to bladder outlet obstruction (BOO) in elderly men. Although pressure-flow studies are considered the most reliable method for evaluating BOO, they are invasive and complicated. Transrectal ultrasonography (TRUS) is a promising alternative because of its minimal invasiveness. Recently, TRUS imaging has been shown capable of measuring the resistive index, a useful parameter for evaluating BOO and for determining proper medical intervention in patients suffering from BPH.
Related Concept Videos
Imaging Studies II: Ultrasonography
Urodynamic Studies: Uroflowmetry
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VI: Voiding Cystourethrography and Cystography
Imaging Studies IV: Magnetic Resonance Imaging
Ultrasonography
During an ultrasonography procedure, a handheld device called a...

