WHAT IS A MAGNETIC RESONANCE IMAGING (MRI) SCAN?

Magnetic resonance imaging (MRI) is a non-invasive radiographic study used to diagnose medical problems. Much like an x-ray, the technique allows the visualization of structures that would otherwise be inaccessible without surgery.
This is accomplished with the use of a large magnet, rather than x-ray radiation, while the patient lies on a table. The pulse of the magnet affects the water molecules of the body and the resulting changes can produce images. MRI is especially helpful in specific areas of the body, including the brain.
An MRI may be ordered if your doctor suspects that there is a structural abnormality that may be causing your symptoms.
For instance, some individuals may have central sleep apnea because of a stroke. Alternatively, seizures that occur during sleep may prompt an MRI of the brain to investigate the cause of epilepsy.

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