Non-invasive imaging refers to medical imaging techniques that allow doctors and researchers to visualize internal structures of the body without the need for surgery or invasive procedures. These imaging techniques include X-rays, ultrasound, computed tomography (CT) scans, magnetic resonance imaging (MRI), and positron emission tomography (PET) scans. Non-invasive imaging is used for various purposes, such as diagnosing and monitoring diseases, assessing the effectiveness of treatments, and conducting research on the functioning of different organs and tissues. It is a valuable tool in modern medicine for making accurate and timely diagnoses, guiding treatment decisions, and improving patient outcomes.