Enhanced CT for differentiating cystitis glandular and bladder cancer
10.13929/j.1003-3289.201901038
- Author:
Tian YANG
1
Author Information
1. Department of Radiology, The Affiliated Hospital of Qingdao University
- Publication Type:Journal Article
- Keywords:
Cystitis;
Tomography;
Urinary bladder neoplasms;
X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2019;35(9):1379-1383
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the value of enhanced CT in differential diagnosis of cystitis glandular (CG) and bladder cancer. Methods: Totally 37 patients with CG and 41 patients with bladder cancer underwent CT plain and enhanced scanning. The location, form, size (maximum length of axis image), thickness, calcification, necrosis and cyst degeneration, the boundary of the lesions, the invasion of bladder wall and regional lymph node metastasis were observed. CT values of lesions and normal bladder wall in arterial phase, venous phase, and delayed phase were measured, and relative enhancement CT values of arterial phase, venous phase and delayed phase of the lesions were calculated. The differences of quantitative and qualitative indices between CG and bladder cancer were compared. ROC curve was applied to analyze the differential diagnosis efficacy of quantitative indices. Results: There was statistically significant difference in the boundary of the lesions between CG and bladder cancer (P<0.01). CT values and the relative enhancement CT values of arterial phase, venous phase and delayed phase in CG patients were lower than those in bladder cancer patients (all P < 0.01). AUC of the relative enhancement CT values of the arterial phase and the venous phase in differential diagnosis of CG and bladder cancer were higher than the other indices (all P < 0.01), but there was no significant difference in AUC of the relative enhancement CT values of the arterial phase nor the venous phase (P=0.488). Taking relative CT value of arterial phase=25.85 HU, relative CT value of venous phase=26.85 HU as the thresholds, the sensitivity were both 95.12%, and the specificity were 91.89% and 86.49%, respectively. Conclusion: Quantitative analysis of enhanced CT has great value in differential diagnosis of CG and bladder cancer.
