Related Experiment Video
Updated: Jun 12, 2026

Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
Published on: June 21, 2024
64-Slice CT urography: 30 months of clinical experience
P Martingano1, F Stacul, M Cavallaro
1UCO di Radiologia, Ospedale di Cattinara, Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Trieste, Strada di Fiume 447, 34149 Trieste, Italy. pmartingano@sirm.org
Purpose:
This study sought to assess the diagnostic accuracy of 64-slice computed tomography urography (CTU) in evaluation of the urinary tract.
Materials And Methods:
A total of 322 CTU procedures were carried out in 317 consecutive patients (mean age 64.4 years). The findings were compared with previous and subsequent patient workup considering both laboratory and imaging studies, such as urine cytology, abdominal ultrasound and CT, cystoscopy, retrograde pyelography, surgery and pathology.
Results:
Out of 322 CTU examinations, 169 showed significant urinary tract changes, whereas 153 revealed no urinary disease, in good agreement with the follow-up. In particular, in bladder evaluation, for which we have a direct comparison with cystoscopy in 125 patients, we calculated a CTU sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and diagnostic accuracy of 85%, 94%, 92%, 89% and 90%, respectively.
Conclusions:
CTU was accurate for urinary tract evaluation, but it cannot replace cystoscopy in patients in whom a malignant bladder disease is suspected.
Related Concept Videos
Imaging Studies III: Computed Tomography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VI: Voiding Cystourethrography and Cystography
Imaging Studies II: Ultrasonography
Imaging Studies I: Kidney, Ureter, and Bladder Studies
Imaging Studies IV: Magnetic Resonance Imaging

