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Abstract #0257

Predict Metastatic & Benign Lymph Nodes in Patients with Gastric Carcinoma by Using Diffusion-Weighted Imaging

Jin Cheng1, Yi Wang1, Jie Deng2, Robert J McCarthy3, Gongwei Wang4, Yingjiang Ye5, He Wang6, Xiangke Du1

1Department of Radiology, Peking University People's Hospital, Beijing, China; 2Department of Radiology, Children's Memorial Hospital, Chicago, IL, United States; 3Department of Anesthesiology, Northwestern University, Chicago, IL, United States; 4Department of Pathology, Peking University People's Hospital, Beijing, China; 5Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing, China; 6GE Health Care

We prospectively proposed to assess the predictive capability of DWI in determing metastatic and benign lymph nodes in patients with gastric carcinoma. The median ADC value of metastatic nodes was lower than that of the benign nodes and a statistical difference was seen. DWI represented as ADC values shows more accurately diagnostic performance in predicting nodal metastases in gastric carcinoma than dose conventional MRI. Furthermore, DWI combined with conventional MRI had the greatest predictive power compared to DWI or anatomic MRI alone, which can provide a great help in determining appropriate therapeutic strateges.