Resonance imaging, commonly known as MRI (Magnetic Resonance Imaging), is a non-invasive medical diagnostic technique that uses magnetic fields and radio waves to create detailed images of internal organs and tissues. The process involves placing the patient inside a strong magnet, which aligns hydrogen atoms in the body's water molecules. When radiofrequency pulses are applied, these aligned particles emit signals that can be detected by receivers and used to construct images of the scanned area. MRI is particularly useful for imaging soft tissues like the brain, muscles, and joints, as well as blood vessels and organs such as the heart or liver. It provides high-resolution, detailed pictures that can help diagnose a wide range of conditions including tumors, infections, inflammation, and abnormalities in organ function.