The Aptamer Functionalized Nanocomposite Used for Prostate Cancer Diagnosis and Therapy

Figure 3

Principle of aptamer-based molecular imaging. For MRI imaging techniques, aptamers are linked to contrast agents based on nanoparticles to build imaging probes. At , the contrast agent (in blue) is injected inside the subject. Then, it distributes throughout the body () and is finally cleared from the tissues, except in the area of interest where the probe interacts with the target ().