Spectral CT Analysis of Solitary Pulmonary Nodules for Differentiating Malignancy from Benignancy: The Value of Iodine Concentration Spatial Distribution Difference

Figure 6

Receiver operating characteristic (ROC) curves by using NIC in the proximal region and dNIC to differentiate lung cancers from benign nodules during pulmonary arterial phase (PP), arterial phase (AP), and venous phase (VP). dNIC, the NIC value difference between the proximal and distal regions of nodules; NIC, normalized iodine concentration; ROC, receiver operating characteristic.