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Abstract #1503

The Added Value of Reduced Field-of-view IRIS-DWI Sequence for T2WI Sequence in T Staging of Rectal Cancer

Ziyou Wang1, Chong Wang2, Haini Zhang1, Jianwei Zeng2, Zhongxiao Liu2, Wenbei Xu1, Shenman Qiu2, Yanchun Zhang3, Hao Wang3, Peng Wu4, Yankai Meng2, and Kai Xu2
1Xuzhou medical university, Xuzhou,Jiangsu Province, China, 2The affilliated hospital of Xuzhou Medical University, Xuzhou,Jiangsu Province, China, 3Suining Country People's hospital affiliated to Xuzhou Medical University, Xuzhou,Jiangsu Province, China, 4Philips Healthcare, Shanghai Province, China

Synopsis

Keywords: Cancer, Diffusion/other diffusion imaging techniques, diagnosis confidenceWe aimed to evaluate the added value of reduced field-of-view (rFOV) IRIS-DWI sequence for T2WI sequence in evaluating T staging of rectal cancer. ROC analysis showed the diagnosis performance based on T2WI + rFOV IRIS-DWI imaging was superior to single T2WI sequence. The AUC, sensitivity and specificity were 0.928, 93.3%, 91.7% and 0.658, 73.3%, 58.3% for two diagnosis methods respectively. The result showed significant difference between two methods with P = 0.002. rFOV IRIS-DWI combined T2WI imaging could provide higher diagnosis confidence and higher diagnosis accuracy for rectal cancer T staging.

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