Fig. 4From: Use of the Highly Biocompatible Au Nanocages@PEG Nanoparticles as a New Contrast Agent for In Vivo Computed Tomography Scan ImagingComparison of computed tomography scan findings in vitro between AuNC@PEGs and iodine-based contrast agent. As the concentration increases, the intensity of X-ray attenuation increases (a). Comparison of Hu values between AuNC@PEGs and iodine-based contrast agents (b). ***P < 0.001Back to article page