“…These new emerging agents are obtained by binding marker molecules (peptides, proteins, and antibodies) to the imaging agent to specifically target molecular expression of angiogenesis [265], [266], [267], [268]. Typical molecular targets include VEGF receptors, key regulators of angiogenesis and vasculogenesis, and α V β 3 integrin, cell adhesion molecule mediating the migration of endothelial cells through the basement membrane during blood-vessel formation [269]. Contrast agents decorated with angiogenesis-targeting ligands remain attached to the areas in which the target molecule is upregulated, thus causing selective enhancement in DCE images, especially in the late phase after injection [266].…”