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MRI (Magnetic Resonance Imaging Scan)Read the MRI (Magnetic Resonance Imaging Scan) article » What is an MRI scan?An MRI (or magnetic resonance imaging) scan is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures. 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, contrast agents, such as gadolinium, are used to increase the accuracy of the images.
When are MRI scans used?An MRI scan can be used as an extremely accurate method of disease detection throughout the body. In the head, trauma to the brain can be seen as bleeding or swelling. Other abnormalities often found include brain aneurysms, stroke, tumors of the brain, as well as tumors or inflammation of the spine. Neurosurgeons use an MRI scan not only in defining brain anatomy but in evaluating the integrity of the spinal cord after trauma. It is also used when considering problems associated with the vertebrae or intervertebral discs of the spine. An MRI scan can evaluate the structure of the heart and aorta, where it can detect aneurysms or tears. It provides valuable information on glands and organs within the abdomen, and accurate information about the structure of the joints, soft tissues, and bones of the body. Often, surgery can be deferred or more accurately directed after knowing the results of an MRI scan. What are the risks of an MRI scan?/...Recommended Reading Related to MRI (Magnetic Resonance Imaging Scan)What is Morton's neuroma?A neuroma is growth (benign tumor) that arises in nerve cells. A Morton's neuroma is a swollen, inflamed nerve located between the bones at the ball of the foot (usually either the second or the third spacing from the base of the great toe). A Morton's neuroma is caused by compression of the nerve of sensation between the ends of the metatarsal bones at the base of the toes. What are symptoms of a Morton's neuroma?A Morton's neuroma causes a "burning" sharp pain on the bottom of the foot in the involved area. The pain of a Morton's neuroma can radiate to the nearby toes. The pain is usually increased by walking or when the ball of the foot is squeezed together and decreased with massaging. It may force a person to stop walking. How is a Morton's neuroma diagnosed?The diagnosis of a Morton's neuroma can usually be made by the doctor when the history ... Other Related MRI Scan ArticlesEmergency Contact for Union
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Lower Back Pain
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Bladder Cancer
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Bone Cancer
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Cushing's Syndrome
- Cushing's syndrome, sometimes referred to as hypercortisolism, is a hormonal disorder caused by prolonged exposure to high levels of the hormone cortisol. Symptoms may include obesity, thinning arms and legs, a rounded face, and increased fat around the neck. Some causes of Cushing's syndrome is from taking glucocorticoid hormones such as prednisone for inflammatory diseases. Treatment for Cushing's syndrome depends on the cause.
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Diverticulitis (Diverticulosis)
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Elbow Pain
- Elbow pain is most often the result of tendinitis, which can affect the inner or outer elbow. Treatment includes ice, rest, and medication for inflammation. Inflammation, redness, warmth, swelling, tenderness, and decreased range of motion are other symptoms associated with elbow pain. Treatment for elbow pain depends upon the nature of the patient's underlying disease or condition.
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Eosinophilic Fasciitis
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Esophageal Cancer
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Gallstones
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Intestinal Gas
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Huntington's Disease
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Hodgkin's Disease
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Irritable Bowel Syndrome (IBS)
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Kidney Cancer
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Knee Pain
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Lung Cancer
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Non-Hodgkin's Lymphoma
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Meniere's Disease
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Morton's Neuroma
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Multiple Myeloma
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Oral Cancer
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Paget's Disease
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Pancreatic Cancer
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Polycystic Kidney Disease
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Stroke
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Vertigo
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