![]() For example, imagine that you are slicing a loaf of bread and taking a picture of each slice. Similar to CT, MRI allows your doctor to see your body in narrow slices, each about one quarter of an inch thick. The image is highly detailed and can show even the smallest abnormality. In essence, MRI measures the water content (or fluid characteristics) of different tissues, which is processed by the computer to create a black and white image. The sensor detects the time it takes for the atoms to return to their original alignment. A radio wave "knocks down" the atoms and disrupts their polarity. When your body is placed in the magnetic field, these atoms align with the field, much like a compass points to the North Pole. Your body is made up of millions of hydrogen atoms (the human body is 80% water), which are magnetic. How does an MRI work?Īn MRI scan works by using a powerful magnet, radio waves, and a computer to create detailed images. This test can help diagnose tumors, strokes, and disc herniations. It allows your doctor to view your spine or brain in slices, as if it were sliced layer-by-layer and a picture taken of each slice. Unlike X-rays or CT, images are created by using a magnetic field, radio waves, and a computer. MRI (magnetic resonance imaging) is a noninvasive diagnostic test that takes detailed images of the soft tissues of the body. MRI (magnetic resonance imaging) and MR angiography Overview ![]()
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