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1 What Is Magnetic Resonance Imaging (MRI)? on Thu Jun 03, 2010 12:20 am

What Is Magnetic Resonance Imaging (MRI)?

Magnetic Resonance Imaging, or MRI, is a painless and safe diagnostic procedure that uses a powerful magnet and radio waves to produce detailed images of the body's organs and structures, without the use of X-rays or other radiation.

A computer converts signals from the MRI scan into extremely clear, cross-sectional images of the part of the body that has been scanned. Each image is a slice of the body area scanned, and numerous images are created that clearly show all the features of that particular part of the body.

The images produced by MRI can be compared to a sliced loaf of bread. Just as you can lift each individual slice from the loaf and see both the slice and the inside of the bread, so too the image "slices" produced by the MRI show the exact details of the inside of the body.

The computer is able to reconstruct all the images into a single image resembling an X-ray. This reconstruction also can be made into three-dimensional images, allowing complete and remarkable visualization of the body area scanned from all angles

MRI is arguably the greatest advance in diagnostic medical techniques over the past century.

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