Fig. 3
From: Effect of spectral CT on tumor microvascular angiogenesis in renal cell carcinoma
Images from a 58-year-old man with a 3.2-cm single renal cell carcinoma. The enhancement of left renal tumor was obvious in renal cortical phase, but slightly decreased in parenchymal phase and excretory phase (A, C and E). B, D and F show the corresponding iodine concentration of lesion. Immunohistochemical staining shows CD34-positive microvessel density. The positively stained endothelial cell or endothelial cell cluster which appears obviously brown is counted as microvessel. The mean microvascular count is 55 (G, × 40)