Clinical Application of CT Virtual Cystoscopy

Objective To evaluate CT virtual cystoscopy (CTVC) in the clinical practice.Materials and Methods Fifty six cases were included in this study. Iodine contrast was intravenously injected after the bladder was voided. Thin slice spiral CT scanning of the bladder area was started when the bladder became filled with contrast media. By using 3D Navigator Smooth software, CTVC images were obtained. With double blind method, the findings in all cases were compared with the fibro cystoscopic (FC) and surgical results.Results On CTVC no abnormality was found in 7 cases, of which cystolith was found in one and no abnormality in 6 cases by FC, with a coincidence rate of 85.7% (6/7). Of 29 cases with CTVC proved vesical tumor, the diagnosis was confirmed by FC and/or surgery in 28, and the coincidence rate was 96.5% (28/29). The remaining case was prostatic hyperplasia. Complete coincidence between CTVC and FC was seen in 20 cases with benign cystic lesions, including vesical diverticulum, calculus, cyst, external compression, etc.Conclusion CTVC is highly sensitive in displaying the vesical lesions. Being a new and non invasive technique, CTVC is very helpful in the diagnosis of vesical diseases, both benign and malignant. It is of great value in the clinical practice.