title: Ultrasonic measurement of residual urine: a method requiring no catheter.
abstract: Residual urine was measured with the two-dimensional and the gray-scale equipments (Kretz-Technik) in 26 cases each. The results were checked by catheterization. The difference between the ultrasonographic and the catheter values was 20 to 40 ml for the two-dimensional, but only 5 to 10 ml for the gray-scale apparatus. Ultrasonography is regarded as a reliable and entirely harmless procedure, suited for the measurement of residual urine.
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000175:diagnosis; D011471:Prostatic Neoplasms / Q000175:diagnosis; D014463:Ultrasonography; D001745:Urinary Bladder Diseases / Q000175:diagnosis*; D014546:Urinary Catheterization; D014555:Urination Disorders / Q000175:diagnosis*