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Abstract #4144

Combined Use of T2-Weighted and Diffusion-Weighted 3T MR Imaging for Differentiating Uterine Sarcomas from Benign Leiomyomas

Tomohiro Namimoto1, Kazuo Awai1, Takeshi Nakaura1, Yumi Yanaga1, Tetsuo Saito2, Toshinori Hirai1, Yasuyuki Yamashita1

1Diagnostic Radiology, Kumamoto University, Kumamoto, Japan; 2Radiation Oncology, Kumamoto University, Kumamoto, Japan

To compare diagnostic ability of sole diffusion-weighted imaging (DWI) and DWI combined with T2-weighted MRI for differentiation of uterine sarcomas from benign leiomyomas. The mean apparent diffusion coefficient (ADC) value of sarcomas was 0.86 } 0.11~10-3mm2/s, which was significantly lower than that of leiomyomas 1.18 } 0.24~10-3mm2/s; however, there was a large overlap. Our preliminary results indicate that combined use of DWI and T2-weighted imaging was better than DWI or T2-weighted imaging alone in the differentiation of uterine sarcomas from benign leiomyomas.