Fig. 4From: Size effect of Au/PAMAM contrast agent on CT imaging of reticuloendothelial system and tumor tissueSize effect of Au-based contrast agent on CT imaging of subcutaneous A549 tumor. a–c CT imaging of tumor with 22.2, 54.2, and 104.9 nm Au/PAMAM injected. d Detailed CT values of tumor imaging. e HE staining of tumor tissues where no changes of cell morphology were observed. f Au content in corresponding tumors detected via ICP-AES at 4 h post injectionBack to article page