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Definition A magnetic resonance imaging (MRI) scan of the chest is a noninvasive imaging method that uses powerful magnets and radio waves to create detailed pictures of the chest (thoracic) area. Unlike x-rays and computed tomographic ( CT ) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet. The magnetic field produced by an MRI is about 10 thousand times greater than the Earth's. The magnetic field forces hydrogen atoms in the body to line up in a certain way (similar to how the needle on a compass moves when you hold it near a magnet). When radio waves are sent toward the lined-up hydrogen atoms, they bounce back, and a computer records the signal. Different types of tissues send back different signals. Single MRI images are called slices. The images can be stored on a computer or printed on film. One exam produces dozens or sometimes hundreds of images. See also: Magnetic resonance imaging (MRI) Alternative Names Nuclear magnetic res...
What does one do if she experiences major chest pains and medical examinations reveal no heart or BP abnormalities? This is a particularly good question because it applies to all fields of medicine, and to all people who at some time in their lives will become patients (Yes, even doctors). If a person is experiencing symptoms that are not accompanied by signs of disease, or evidence in the form of an abnormal test, the diagnostic work-up will sometimes cease. Yet the patient still has the symptoms. What should be done? First, were all the elements of your complaint dealt with? Please see my prior posting about preparing for a visit to a cardiologist . It is appropriate for a visit to any physician. Second, what constitutes a full work-up for chest pain? This is actually different depending upon the likelihood of different processes causing the discomfort. Arteriosclerotic coronary artery disease is quite unlikely in very young people (but congenital disease may be more ...
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