Clinical application of 64-slice spiral CT urography in patients with urologic diseases

Objective To investigate the diagnostic value of 64-slice spiral CT urography(CTU) on patients with diseases of urinary system,and compare the diagnostic accuracy of computed tomography urography(CTU) and conventional intravenous pyelography (IVP)in diagnosis of urologic disease.Methods Two hundred and seventeen patients with urinary tract diseases who presented complete clinical data over the past 2 years were reviewed.There were 87 cases of ureterolithiasis and nephrolithiasis,66 cases of cancer in ureter and pelvis,35 cases of cancer in bladder,13 cases of parapelvic cyst and pyelogenic cyst,9 cases of ureteropelvic junction obstruction(UPJO),7 cases of megaloureter.All of the cases underwent 64-slice CT urography,and the images were analyzed retrospectively.Results The accuracy of diagnosis was 98.2％ (213/217) in CTU group and 65.4％ (142/217) in IVP group.The examination time was (19.1 ± 2.9) rmin in CTU group and (65.3 ± 24.8) min in IVU group.There were significant differences between the two groups (P ＜ 0.05).Conclusions 64-slice CT urography can observe the local lesion in multi-angle,and the scan time is shorter,image resolution is higher.The CTU can provide more information than conventional IVP.It could be applied in the vast majority of patients with urinary system diseases. Key words: Tomography ;  X-ray computed ;  Intravenous pyelography ;  Spiral computed ;  Urologic system ;  Calculus ;  Cancer;  Diagnosis