Multi-detector CT (MDCT) is a powerful tool for non-invasive evaluation of gastric cancer. MDCT not only detect primary tumors but also provide comprehensive staging, with accurate assessment of the neoplastic mass, regional and distant lymphadenopathy, and distant metastasis. Current MDCT with multiplanar reconstruction (MPR) images increased the accuracy of staging of gastric cancer. Thus, MDCT with MPR provides a useful diagnostic method for the pre-operative evaluation of patients with known gastric cancer.