a non-invasive medical imaging technique that uses powerful magnetic fields and radio waves to produce detailed pictures of the inside of the body. Unlike X-rays or CT scans, MRI does not expose patients to ionizing radiation. The strong magnetic field temporarily affects the alignment of hydrogen atoms in the body. When these atoms return to their original positions, they emit signals that are detected by the scanner and processed by a computer to create high-resolution images of tissues and organs. MRI can be used to visualize nearly all types of body tissue, making it an essential tool in modern diagnostics.
Abbreviation: MRI
Example
A physician may order an MRI of the knee to assess a suspected meniscus tear. The scan produces detailed images of the soft tissues, cartilage, and ligaments without exposing the patient to radiation, enabling the doctor to make a precise diagnosis and plan appropriate treatment.