CTの診断的有用性

Abstract

Computed tomography (CT) has been used as a diagnostic technique in various urological diseases. Here demonstrated is a case of ureteral incontinence with double renal pelvis whose upper one has ectopic ureteral orifice. Also a case of ureteral stricture in transplanted kidney and three cases of uric acid calculi are demonstrated. CT provides the accurate information in each diagnostic procedure. The use of CT in the diagnosis of urinary stones is estimated. CT number of 75 stones with single component shows specific distribution in relation to the component; ex. calcium stones: 900-1000, cystine: 700-800, struvite: 600-700, uric acid: 400-500. Structure and component of the stone is easily demonstrated by CT, especially about nonopaque calculi, whose image is positively displayed only by CT.