Dual energy computed tomography for detection of metastatic lymph nodes in patients with hepatocellular carcinoma

Figure 4 A 44-year-old male with hepatocellular carcinoma and lymph node metastasis. A and B: Region of interest was placed in the maximal axial section for lymph nodes (white arrow); C: The spectrum curve of the removed lymph nodes in the portal phase showed a descending curve with a slope of about 1.0-1.7. The iodine concentrations of the three lymph nodes were 20.01 mg/mL, 21.06 mg/mL, and 22.50 mg/mL, respectively. The normalized iodine concentrations were 0.41, 0.53, and 0.64, respectively.