Figure 3

Measurement of contact length and Iodine uptake. (a, b) the largest interface length between the tumor and pleura on multiple planes was measured by manually outlining the curve of interface. (c) a region of interest (ROI) drawn freehand to cover at least 25% of the nonnecrotic lesion was placed at the venous phases, and a circular ROI was placed in the center of aorta on the same slice. (d) Iodine concentration of the lesion and aorta were derived from iodine overlay image.