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Abstract #4055

3T MR Imaging with Diffusion-Weighted Imaging and Dynamic MR Imaging for Evaluation of Preoperative T and N Staging of Gastric Cancer: Comparison with Multi-Detector Row Computed Tomography

Ijin Joo1, Jeong Min Lee1, Jung Hoon Kim1, Cheong-Il Shin1, Joon Koo Han1, Byung Ihn Choi1

1Radiology, Seoul National University Hospital, Seoul, Korea

Accurate preoperative T staging (depth of tumor invasion) and N staging (lymph node metastasis) of gastric cancer is critical in the determination of surgical planning. This prospective study was performed to compare the diagnostic performance of 3T MRI with diffusion-weighted imaging and dynamic contrast-enhanced imaging with that of MDCT in the preoperative staging of gastric cancer. Two radiologists independently reviewed MDCT and MRI of 50 consecutive patients to determine the preoperative T and N stages. Results suggested that 3T MR imaging showed comparable diagnostic performance to MDCT both in T and N staging of gastric cancer.