Nanotechnology enhances diagnostic techniques by improving the sensitivity and specificity of detection methods. Quantum dots and gold nanoparticles are used as contrast agents in imaging techniques like MRI and CT scans. These nanoprobes can be functionalized with biomolecules to target specific proteins or cells, aiding in early disease detection. For example, biosensors incorporating nanoparticles can detect biomarkers at very low concentrations, facilitating early diagnosis of diseases such as cancer.
