Abstract #1676

Multiparametric MRI Evaluation of Vesical Imaging‑Reporting and Data System (VI‑RADS) for bladder cancer after Neoadjuvant Chemotherapy

Xinxin Zhang¹, Yichen Wang¹, Sicong Wang², Jianzhong Shou¹, Yan Chen¹, and Xinming Zhao¹

¹National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China, Beijing, China, ²GE Healthcare, MR Research China, Beijing, Beijing, China

Synopsis

Keywords: Cancer, BladderLocal tumor restaging after neoadjuvant chemotherapy (NAC) treatment is urgently needed. Therefore, the aim of this study was to investigate whether VI-RADS could accurately detect muscle invasion in BC patients after NAC treatment. VI-RADS scores of bladder cancer after NAC were independently assessed by two radiologists. With an optimal cut-off value ≥4, the AUC values for the VI-RADS scores for predicting muscle invasion were 0.91, and 0.94 for reader 1 and reader 2 respectively. VI-RADS could potentially be a restaging tool for patients who underwent NAC.

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