Analysis of drop intervals in jets modelling obstruction of the urinary tract
Rogers C. Ritter, Norman R. Zinner, Arthur M. Sterling · Physics in Medicine and Biology · 1974
The external human urine stream breaks into drops, the sequence and properties of which contain information about the condition of the urinary outlet tract. These are studied wih an optical instrument, the Urinary Drop Spectrometer. One particular analysis, the distribution of time intervals between the drops, is made with data taken with a simplified brass model of the adult male urethra. A quantitative measure of the sensitivity of this analysis to the size and location of annular obstructions is presented. Similarities to results for several common types of obstruction in humans are exhibited and discussed.