The value of multi-slice CT urography in diagnosis of urinary tract diseases

Objective To investigate the diagnostic value of multi-slice CT(MSCT) urography in urinary tract diseases.Methods CT urography was performed in 80 cases with urinary tract diseases.The multiplanar reconstruction(MPR),maximum intensity recontruction(MIP),cured planar reformation(CPR) and volume rendering(VR) were reconstructed based on the data extracted by conventional plain scan,arteral phase,venous phase and lag period scan.Results MSCT urography provided clear three dimensional images of the whole kidney,ureter and urinary bladder,the entire and partial structure,shape and relation with the tissues surrounding them.Of 80 cases,the diagnosis of urinary calculus was confermed in 46 cases,ureteral carcinoma in 4 cases,renal pelvic carcinoma in 1 case,urinary congenital malformation in 5 cases,urinary inflammation in 9 cases,ureteral fistula in 1 case,ureteral polyp in 1 case,ureter invaded by palvic magligant mass in 7 cases,and normal in 6 cases.In the diagnosis of urinary tract diseases,the specificity of MSCT urography was 100%,accuracy rate was 95% and misdiagnosis rate was 5%.Conclusion MSCT urography can provide clear and objective images and reliable diagnostic informations for the diagnosis of urinary system diseases.