MRI
MRI
MRI - The basic premise for MRI is by using a strong magnetic field, atoms (usually hydrogen protons) within the body begin to spin. A radio frequency is then released that disrupts the spinning action of the atoms, returning them to their normal state. The process of returning to their normal state, sends off another radio signal that is then captured by small antennae, called coils placed near or over the area of interest. MRI scans provide the best soft tissue contrast of all the imaging modalities and are often used for imaging and evaluating sports related injuries such as ligament, muscle and tendon damage. MRI also has heavy utilization for brain and spine related injury. Claustrophobia is a common issue for many patient having MRI, but the development of shorter and wider magnets (open) has brought some relief for most patients who suffer from claustrophobia.
MRA - Is the utilization of a contrast medium or dye to visualize blood vessels within the body that would not normally been seen by using MRI alone.
It is extremely important that you communicate with your physician and the MRI technologist if have ever worked with metal, as this often requires a single picture to be taken of your eyes to ensure that there is no residual metal present. Currently, there are several contraindications for MRI such as having a pacemaker, some medication pumps, specific surgical brain clips and some implanted metal orthopedic devices. The MRI tech will have a listing of all approved implanted devices.
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