Comparison of CT virtual cystoscopy of the contrast material-filled bladder with conventional cystoscopy in the diagnosis of XXXX .

@entity1 @entity150
AIM: To investigate the value of virtual cystoscopy using contrast material to fill the bladder during routine abdominopelvic computed tomography (CT) examinations for the detection of @entity150 . MATERIALS AND METHODS: Thirty-three consecutive @entity1 (25 @entity1 and eight @entity1 ; are range 51-82 years; mean age+/-SD, 65+/-7 years) who had painless macroscopic haematuria and were suspected to have @entity150 were prospectively evaluated with virtual cystoscopy. After intravenous injection of contrast medium, the contrast material-filled bladders were examined with single-detector helical CT with 2-mm section thicknesses. Source CT data were transferred to a workstation for interactive navigation using surface rendering. All the @entity1 also underwent conventional cystoscopy. RESULTS: The results of virtual cystoscopy were compared with the findings from the conventional cystoscopy. Seventy-one of 78 @entity150 detected with conventional cystoscopy in 28 @entity1 were also shown on virtual images. The bladders of five @entity1 appeared normal on both conventional cystoscopy and virtual cystoscopy. On virtual cystoscopy, seven of the 12 lesions that were < or =5 mm in diameter could be identified. The following statistical values for the identification of bladder lesions using virtual cystoscopy were calculated: sensitivity 94%, specificity 90%, positive predictive value 87%, negative predictive value 93%, and accuracy 93%. CONCLUSION: CT virtual cystoscopy is a noninvasive technique that can be used successfully for detection of @entity150 >5 mm in selected cases during daily routine abdominopelvic work.
