Why is MRI a form of spectroscopy?

MRI, or Magnetic Resonance Imaging, is considered a form of spectroscopy because it analyzes the magnetic properties of atomic nuclei, particularly hydrogen in water and fat within the body. By applying strong magnetic fields and radiofrequency pulses, MRI detects the resonance frequencies of these nuclei, which provide detailed information about the chemical environment and structure of tissues. This spectral information is used to create images that reflect the biochemical composition of the tissues, allowing for non-invasive diagnostic insights. Thus, MRI combines imaging techniques with spectroscopic analysis to enhance our understanding of biological systems.