Multi-slice spiral CT urography in the diagnosis of urinary system diseases

Objective: To evaluate multislice CT urography (MSCTU) in diagnosis of urinary system disease. Methods:CT plain scan,renal dual phase enhanced scan and CT urography were performed in 42 cases respectively. All the cases had already received KUB and IVU examinations. The urinary passage images were reformed by means of MIP.MPR and VR. Results: The scanning of each case was finished within 14-22 seconds. The reconstructed images could display clearly the diseases and anomalies of the urinary tract,these included;ureteral stones and dilation of ureter and renal pelvis in 24 cases,blood clots in ureter and bladder after operation (n = 2). ureteral inflammation and adhesion led to ureteral obstruction (n=2) .invasion of ureter due to lymph node metastasis (n=l). duplication of ureter and pelvis with good demonstration of the confluence of ureter (n= 3) , ureteral fistula and resulting encapsulated urine collection (n= 1), congenital megaureter (n=1) and retrocaval ureter (n=l). Conclusion:MSCTU has obvious advantage in the diagnosis of urinary system diseases because of its ultra fast scan speed,big coverage and thin slice scanning ability. Therefore it can be used in the clinical work as a new assistant diagnostic method.