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Magnetic Resonance Imaging (MRI) provides extremely detailed images of body tissue, organs, and bones without using X-rays or radiation. Instead, it uses two natural, safe forces: magnetic fields and radio waves.
MRI is used to detect a wide range of conditions, including cancer, heart and vascular disease, strokes, and disorders of the joints and musculoskeletal system. It may help you avoid unnecessary surgery and more invasive diagnostic procedures.
First, the MRI scanner creates a strong magnetic field through the body. Then it sends radio waves into the body. Under the influence of the magnetic field, different tissues send back different responses. Certain diseased or injured tissues send responses that are different from healthy ones.
A computer in the scanner converts the different responses into images of the body. These are displayed in layers—like slices of bread. The images are sent to the radiologist for interpretation.