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MRI Scan – The Magnetic Body Scanner

A MRI scan would always remind of a big white hole through which one has to pass and then it scans the body automatically. Though it is partially correct, it works on the technique of magnetic resonance imaging. This technique is being used since 3 decades and it uses magnetic and radio waves minimizing the exposure to x-rays or any other harmful radiation. 

The big white hole is a large cylinder shaped magnet which sends radio waves through the body which are stronger than the magnetic field of the earth by almost 10,000 to 30,000 times. The body’s atoms are affected and compel the nuclei to change position. When they move back to the original position, they send out their own radio waves which are caught by the scanner and converted into a picture. The images are based on the strength of the incoming signals and the location.

The MRI scan can provide images of all the tissue in the body. As it gives out clear images of the body parts surrounded by bone tissue, the technique is useful while examining the spinal cord and brain. Due to the detailed pictures, MRI is the best technique to find tumors (malignant or benign) in the brain. In case of the presence of a tumor, its spread in the brain tissue can also be found. Other brain details like strands of abnormal tissue in multiple sclerosis or changes occurring after bleeding in the brain or the lack of oxygen after a stroke can be known by an MRI scan. Heart defects, thickening of muscles around the heart leading to a heart attack and large blood vessels could also be seen. It can also be examined to use spine, joints and softer parts like kidneys, spleen and liver.

Though another alternative is a CT scan, it can show images only horizontally and the difference between normal and abnormal tissues is very vague. The MRI scan enables taking pictures in every angle and it is generally detailed with no ionizing radiation.
The procedure of an MRI scan is outpatient medical service and it involves lying still which leads to administering anesthesia to a child before the test. No metal objects are allowed on the body as it is exposed to a powerful magnetic field. Any electrical appliance usage like pacemaker or hearing aid or metal presence in the body such as surgical clips should be informed before the test, however, orthopaedic metalware like bone screws or artificial hips do not create a problem. This medical service is developing everyday with the advent of new technology for the welfare of people’s health.

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Magnetic resonance imaging (MRI), nuclear magnetic resonance imaging (NMRI), or magnetic resonance tomography (MRT) is amedical imaging technique used in radiology to visualize detailed internal structures MRI Scan Find latest information on medical products available on Docturs.Com Mdical Srvices An online business directory of medical products and other medical related informations

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