Diagnostic and Interventional Radiology
Abdominal Imaging - Original Article

Prospective assessment of VI-RADS score in multiparametric MRI in bladder cancer: accuracy and the factors affecting the results

1.

Department of Urology, Giresun University School of Medicine, Giresun, Turkey

2.

Department of Radiology, Giresun University School of Medicine, Giresun, Turkey

3.

Department of Pathology, Giresun University School of Medicine, Giresun, Turkey

Diagn Interv Radiol 2022; 28: 396-402
DOI: 10.5152/dir.2022.201108
Read: 622 Downloads: 156 Published: 01 September 2022

PURPOSE
We aimed to investigate the accuracy of Vesical Imaging - Reporting and Data System (VI-RADS) in the detection of muscle-invasive bladder cancer (MIBC) and to determine which factors affect the results of this scoring system.

METHODS
A prospective data analysis of 80 patients who were detected to have bladder tumor was performed between March 2019 and October 2020. VI-RADS scoring was used to determine the probability of muscle invasion. The scores were compared with pathological results to evaluate the accuracy of the VI-RADS scoring system. Interobserver agreement was assessed by VI-RADS scoring of 20 randomly chosen patients by a different experienced radiologist.

RESULTS
Using the VI-RADS scoring system, the sensitivity, specificity, positive predictive value, and negative predictive value of multiparametric magnetic resonance imaging (mpMRI) were 87.5%, 87.5%, 63.6%, and 96.6%, respectively. The interobserver agreement expressed as the interclass correlation coefficient (ICC) was 0.72 (95% CI: 0.44-0.84, P < .001). In addition, the flat appearance of the tumor was an important factor affecting the accuracy of the VI-RADS score (odds ratio: 5.3 [95% CI: 1.1-27.0] and relative risk: 1.87 [95% CI: 1.24-2.82]).

CONCLUSION
The mpMRI, used in conjunction with VI-RADS, has proven to be an effective imaging method for detecting muscle invasion in cases of bladder cancer. VI-RADS scoring system can distinguish whether there is a muscle-invasive and non-muscle invasive bladder cancer with acceptable accuracy. In addition, the flat appearance of the tumor is an important entity that can affect the accuracy of the VI-RADS scoring system.

You may cite this article as: Oğuz A, Bekçi T, Öğreden E, et al. Prospective assessment of VI-RADS score in multiparametric MRI in bladder cancer: Accuracy and the factors affecting the results. Diagn Interv Radiol. 2022;28(5):396-402.

Files
EISSN 1305-3612