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Abstract #4103

Preoperative T Staging of Urinary Bladder: Diagnostic Performance of Diffusion-Weighted MR Imaging at 3.0 T

Yoshimitsu Ohgiya1, Jumpei Suyama1, Syouei Sai1, Makoto Saiki1, Takashi Hashizume1, Noritaka Seino1, Masanori Hirose1, Takehiko Gokan1

1Showa University School of Medicine, Tokyo, Japan

The purpose of this study was to evaluate the ability of DW MR imaging at 3.0T for diagnosing T stage in bladder cancer. Sensitivity and accuracy for differentiating T1 tumors from T2 to T4 tumors and Overall accuracy for diagnosing tumor stage obtained by using T2-weighted plus DW images were significantly better than those obtained by using T2-weighted images alone (P = 0.02). DW images at 3T can provide useful information for evaluating the T stage of bladder cancer, particularly in differentiating T1 or lower tumors from T2 or higher tumors.