Sungmin Woo1, Valeria Panebianco2, Yoshifumi Narumi3, Francesco Del Giudice2, Valdair F Muglia4, Mitsuru Takeuchi5, Soleen Ghafoor1, Bernard H Bochner6, Alvin C Goh6, Hedvig Hricak1, James W F Catto7, Hebert Alberto Vargas8. 1. Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA. 2. Department of Radiological, Oncological and Anatomopathological Sciences, "Sapienza" Rome University, Policlinico Umberto I Hospital, Rome, Italy. 3. Departments of Radiology and Health Science, Kyoto Tachibana University, Kyoto, Japan. 4. Imaging Division, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil. 5. Department of Radiology, Radiolonet Tokai, Nagoya, Japan. 6. Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. 7. Academic Urology Unit, University of Sheffield, Sheffield, UK. 8. Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA. Electronic address: vargasah@mskcc.org.
Abstract
CONTEXT: A noninvasive multiparametric magnetic resonance imaging (MRI)-based scoring system for predicting muscle-invasive bladder cancer (MIBC), the "Vesical Imaging Reporting and Data System" (VI-RADS), was recently developed by an international multidisciplinary panel. Since then, a few studies evaluating the value of VI-RADS for predicting MIBC have been published. OBJECTIVE: To review the diagnostic performance of VI-RADS for the prediction of MIBC. EVIDENCE ACQUISITION: PubMed and EMBASE databases were searched up to November 10, 2019. We included diagnostic accuracy studies using VI-RADS to predict MIBC using cystectomy or transurethral resection as the reference standard. Methodological quality was evaluated with Quality Assessment of Diagnostic Accuracy Studies-2. Sensitivity and specificity were pooled and plotted using hierarchical summary receiver operating characteristics (HSROC) modeling. Meta-regression analyses were done to explore heterogeneity. EVIDENCE SYNTHESIS: Six studies (1770 patients) were included. Pooled sensitivity and specificity were 0.83 (95% confidence interval [CI] 0.70-0.90) and 0.90 (95% CI 0.83-0.95), and the area under the HSROC curve was 0.94 (95% CI 0.91-0.95). Heterogeneity was present among the studies (Q = 29.442, p < 0.01; I2 = 87.93%, and 90.99% for sensitivity and specificity). Meta-regression analyses showed that the number of patients (>205 vs ≤205), magnetic field strength (3 vs 1.5 T), T2-weighted image slice thickness (3 vs 4 mm), and VI-RADS cutoff score (≥3 vs ≥4) were significant factors affecting heterogeneity (p ≤ 0.03). CONCLUSIONS: VI-RADS shows good sensitivity and specificity for determining MIBC. Technical factors associated with MRI acquisition and cutoff scores need to be taken into consideration as they may affect performance. PATIENT SUMMARY: A recently established noninvasive magnetic resonance imaging-based scoring system shows good diagnostic performance in detecting muscle-invasive bladder cancer.
CONTEXT: A noninvasive multiparametric magnetic resonance imaging (MRI)-based scoring system for predicting muscle-invasive bladder cancer (MIBC), the "Vesical Imaging Reporting and Data System" (VI-RADS), was recently developed by an international multidisciplinary panel. Since then, a few studies evaluating the value of VI-RADS for predicting MIBC have been published. OBJECTIVE: To review the diagnostic performance of VI-RADS for the prediction of MIBC. EVIDENCE ACQUISITION: PubMed and EMBASE databases were searched up to November 10, 2019. We included diagnostic accuracy studies using VI-RADS to predict MIBC using cystectomy or transurethral resection as the reference standard. Methodological quality was evaluated with Quality Assessment of Diagnostic Accuracy Studies-2. Sensitivity and specificity were pooled and plotted using hierarchical summary receiver operating characteristics (HSROC) modeling. Meta-regression analyses were done to explore heterogeneity. EVIDENCE SYNTHESIS: Six studies (1770 patients) were included. Pooled sensitivity and specificity were 0.83 (95% confidence interval [CI] 0.70-0.90) and 0.90 (95% CI 0.83-0.95), and the area under the HSROC curve was 0.94 (95% CI 0.91-0.95). Heterogeneity was present among the studies (Q = 29.442, p < 0.01; I2 = 87.93%, and 90.99% for sensitivity and specificity). Meta-regression analyses showed that the number of patients (>205 vs ≤205), magnetic field strength (3 vs 1.5 T), T2-weighted image slice thickness (3 vs 4 mm), and VI-RADS cutoff score (≥3 vs ≥4) were significant factors affecting heterogeneity (p ≤ 0.03). CONCLUSIONS:VI-RADS shows good sensitivity and specificity for determining MIBC. Technical factors associated with MRI acquisition and cutoff scores need to be taken into consideration as they may affect performance. PATIENT SUMMARY: A recently established noninvasive magnetic resonance imaging-based scoring system shows good diagnostic performance in detecting muscle-invasive bladder cancer.
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