Radiology is the branch of medicine that uses imaging techniques—such as X-rays, CT scans, MRIs, ultrasounds, and PET scans—to look inside the body. It helps doctors diagnose diseases, monitor treatment progress, and guide certain procedures like biopsies or surgeries. Radiologists are medical specialists who interpret these images to detect issues like tumors, fractures, infections, or organ damage. In 2025, radiology also includes AI-powered imaging for faster and more accurate results, making it a vital part of modern healthcare.