Spectral computed tomography parameters of primary tumors and lymph nodes for predicting tumor deposits in colorectal cancer

Figure 2 Illustration of venous phase segmentation. The 74-year-old male patient with tumor deposits+. In the arterial and venous phases, the normalized iodine concentration of region of interest. A: Primary tumors (arrow) = 0.16, 0.49; B: The largest regional lymph nodes (dashed arrow) = 0.17, 0.48. Lymph node-to-primary tumor ratio = 1.09, 0.98.