Final answer:
MRI is a noninvasive medical imaging technique that uses the magnetic properties of the hydrogen nuclei in water to produce detailed images of soft tissues in the body. It does not expose patients to ionizing radiation and is commonly used to detect tumors and abnormalities in soft tissues.
Step-by-step explanation:
Magnetic Resonance Imaging (MRI) is a noninvasive medical imaging technique that uses the magnetic properties of the hydrogen nuclei in water to produce detailed images of soft tissues in the body. MRI is based on the phenomenon of nuclear magnetic resonance (NMR), in which an externally applied magnetic field interacts with the nuclei of certain atoms. Unlike x-rays, which can be hazardous and require exposure to ionizing radiation, MRI does not expose patients to radiation and provides valuable medical information. It is commonly used to image internal organs and is especially useful for detecting tumors and abnormalities in soft tissues.