COLOR-CODED DOPPLER SONOGRAPHY OF THE MALE URETHRA - IN-VIVO EXAMINATIONS AND EXPERIMENTAL RESULTS

The so-called ureter jet is a well known phenomenon, which consists of echoes due to turbulent urine flow emanating from the ureteral orific es during forced diuresis. These motion phenomena are also visible in colour Doppler examinations. In analogy to the ureter jet we could dem onstrate different colour phenomena in the normal (n = 20) and stenose d (n = 14) male urethra during voiding by using colour coded Doppler s onography. These observations are obviously caused by turbulent urine flow. In an experimental study, this hypothesis could be verified. Bec ause certain intraurethral colour phenomena are related to stenoses of the urethra, and because their intensity depends on the degree of ste nosis and on urine flow (in ml/s), it seems to be possible to draw con clusions on the urodynamic consequences of a stenosis in the urethra b y means of colour coded Doppler sonography.