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Cary Medical Center was the first hospital in northern Maine to offer fixed
base Magnetic Resonance Imaging (MRI) services, a medical diagnostic technique
that creates images of the body. While CT
scanners use x-rays to acquire images, the MRI unit uses radio frequency
signals and strong magnetic fields to obtain two dimensional cross-sections of
tissue and three dimensional reconstructions.
Even though the magnetic fields are 10 thousand times greater than the
earth's, the patient will not feel any of the force generated by the 1.5 ton
magnet.
The
MRI is best suited for soft tissues like muscles, organs, and veins. The radio waves bounce back to highly
sophisticated computers that interpret the information as an image. Different types of tissue send back different
signals; even the slightest variations between healthy and abnormal tissue can
be detected.
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About Cary