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What is MRI? Magnetic Resonance Imaging (MRI) or Nuclear
Magnetic Resonance (NMR) is an imaging modality that utilizes
magnetic fields and radiofrequency to obtain detailed pictures
of the body. Powerful magnets and radio waves are used to
construct images of the body, the magnet generates a magnetic
field roughly 10,000 times stronger than the natural background
magnetism from the earth. A very small percentage of hydrogen
atoms within a human body will align with this field. When
focused radio wave pulses are broadcast towards the aligned
hydrogen atoms in tissues of interest, they will return a
signal. The subtle differences in that signal from various body
tissues enables MRI to differentiate organs, and potentially
contrast benign and malignant tissue. Imaging planes (or
“slices”) are saved to a disc. MRI can easily be performed
through clothing and bones. For some MRI procedures contrast
media, commonly referred to as “dye”, is sometimes giv