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Magnetic Resonance Imaging (MRI) makes cross-sectional images by measuring changes in the body's natural magnetic field as parts of the body are exposed to strong magnets and various radio frequencies. This allows the doctor to examine the structure and appearance of internal organs. MRI can sometimes produce more detailed three-dimensional images than CT.


The MRI scanner is a tube surrounded by a giant circular magnet. The patient is placed on a moveable bed that is inserted into the magnet. The magnet creates a strong magnetic field that aligns the protons of hydrogen atoms, which are then exposed to a beam of radio waves. This spins the various protons of the body, and they produce a faint signal that is detected by the receiver portion of the MRI scanner. The receiver information is processed by a computer, and an image is produced. The image and resolution produced by MRI is quite detailed and can detect tiny changes of structures within the body. For some procedures a dye is used to increase the accuracy of the images.

  • Body MRI
  • Breast MRI
  • Functional MRI
  • Head MRI
  • MR Angiography
  • MR Guided Breast Biopsy
  • MR Cholangiopancreatography (MRCP)
  • Cardiac (heart) MRI
  • Chest MRI
  • Musculoskeletal MRI
  • Prostate MRI
  • Spine MRI

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Robert Wood Johnson University Hospital Hamilton Hamilton. Phone: 609-586-7900 Physician Referral: 609-584-5900.

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