A study from 2013 by Zalai Pan et al investigated the association between histologically confirmed gastric cancer, and the discovery of metastatic lymph nodes by DECT. Ninety-six patients were included. Two groups of radiologists were blinded to the endoscopic and histological findings. Lymph nodes of 6 mm were included in the N-staging. They found a sensitivity of 85.4% for N0, 84.4% N1, 91.7% N2. Furthermore, it showed a significant difference in the uptake of iodine (from the iodine-containing contrast) with the K-edge value of 33.20 keV, in malignant and non-malignant lymph nodes.