Medical imaging is the process by which physicians evaluate an area of the subject's body that is not normally visible. These processes include MRI, X-Rays and CT scans.
Unlike X-Ray and CT (Computed Tomography), which use ionizing radiation, MRI (Magnetic Resonance Imaging) requires specialized equipment that uses a powerful, constant magnetic field, radiofrequency and dedicated equipment to create very clear pictures of internal body structures.
During the MRI examination, the patient is placed within the MR “scanner”. While in the magnet, powerful physics are at play manipulating tiny subatomic particles that are present in most of the body’s tissues. Radiofrequency energy is applied causing these protons to produce energy, which in turn produces a signal that is picked up by a receiver within the scanner. With the use of the magnet, radiofrequency and a specialized computer system, a signal is spatially encoded and an image of specific interest is produced.