Final answer:
MRI's use the property of hydrogen atoms responding to a strong magnetic field to create detailed images, particularly useful for visualizing soft tissues and organ function.
Step-by-step explanation:
MRI's, or Magnetic Resonance Imaging devices, use the magnetic properties of hydrogen atoms to produce detailed images of the body. In soft tissues, which are rich in water molecules, hydrogen nuclei become excited in a strong magnetic field and then emit electromagnetic signals when they return to their original states. The emitted signals are detected and used to generate images that can distinguish between different tissue densities and can provide valuable information about organ function and the condition of various tissues.