Molecular imaging is a technique that allows scientists and doctors to visualize biological processes at the molecular and cellular levels in living organisms. This method uses various imaging technologies, such as PET (Positron Emission Tomography) and MRI (Magnetic Resonance Imaging), to detect specific molecules or cells, providing valuable information about diseases like cancer and neurological disorders. By highlighting the presence and activity of specific molecules, molecular imaging helps in diagnosing diseases, monitoring treatment responses, and understanding disease mechanisms. This approach enhances personalized medicine, allowing for tailored therapies based on individual molecular profiles, ultimately improving patient outcomes.