Evaluation of 640-slice spiral CT with 3-dimentional reconstruction technique in diagnosis of urologic obstruction

Objective To evaluate the 640-slice spiral CT with 3-dimensinal reconstruction in diagnosis of urologic obstruction.Methods In 274 cases having urinary tract obstructive disease which cause could not be diagnosed by ultrasonography,kidney-ureter-bladder plain film and intravenous urography,640-slice spiral CT was performed.The acquired data were post-processd using 3-dimensional reconstruction technique.Results The 640-slice spiral CT urography showed the course of the urinary system,obstructed position ande the lesions clearly.In the 274 cases,154 of urinary calculi,29 of duplex renal pelvis and ureter,34 of benign stricture of ureter,26 of urinary tumors,13 of urinary tuberculosis,8 of posterior ureter of vena cava,1 of megaureter,9 of ureter compressed by retroperitoneal neoplasm were diagnosed,and all of them were confirmed by surgical and pathological findings.The coincidence rate of CT and clinical diagnosis was 100%.Conclusion 640-slice spiral CT with 3-dimensinal reconstruction technique is safe,reliable,convenient and fast,which might be used as the first choice of imaging technique in the urologic obstruction.