Related Experiment Videos
[Value of helical CT in bladder tumor]
Dong Wang1, Wan-shi Zhang, Ming-hui Xiong
1Department of Radiology, Air Force General Hospital, Beijing 100036, China.
Zhonghua Zhong Liu Za Zhi [Chinese Journal of Oncology]
|April 8, 2003
Summary
Helical CT effectively diagnoses bladder tumors. CT virtual cystoscopy (CTVC) offers the highest sensitivity (96.2%) for detecting tumors, even small ones, aiding comprehensive diagnosis and treatment planning.
Area of Science:
- Radiology
- Urologic Oncology
Background:
- Bladder tumors require accurate diagnosis and staging.
- Conventional fiberoptic cystoscopy has limitations in visualizing certain aspects of bladder tumors.
Purpose of the Study:
- To assess the diagnostic performance of helical CT in identifying and staging bladder tumors.
- To compare the efficacy of different helical CT imaging techniques.
Main Methods:
- 28 patients with confirmed bladder tumors underwent pre- and post-contrast helical CT.
- Imaging included axial, multiplanar reconstruction (MPR), 3D, and CT virtual cystoscopy (CTVC).
- Results were compared to conventional fiberoptic cystoscopy and surgical findings in a double-blind manner.
Main Results:
- Helical CT sensitivity for bladder tumor detection: axial (92.3%), 3D (76.9%), CTVC (96.2%).
- Preoperative tumor staging accuracy with helical CT was 83.0%.
- Axial images provided intramural and extravesical detail; MPR showed invasion and ureteric relation; 3D/CTVC visualized surface morphology and ureteric orifices; CTVC detected sub-5mm tumors.
Conclusions:
- Combined interpretation of helical CT techniques (axial, MPR, 3D, CTVC) provides comprehensive diagnostic information.
- Helical CT aids in the diagnosis and treatment planning of bladder tumors.
- CTVC is particularly valuable for detecting small lesions and assessing surface characteristics.