Word: mris
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
This technology takes advantage of the body's natural magnetic field, measuring changes in the field's energy as patients are exposed to various radiofrequencies. Unlike CT views, MRIs can be rendered in full 3-D because MRI machines can slice along three or more planes, not just one. A computer can then compile the information to generate a sort of relief map of the brain, left, depicting even the smallest brain structures (for example, the brain's center for emotion, the amygdala, in yellow, is deeply buried but visible). Using MRIs, scientists have learned that the brains of schizophrenics...
...years, doctors have used CAT scans and MRIs to help them diagnose strokes, brain tumors and other neurological conditions. But as the technology has become more sophisticated, researchers have started to employ it to tease out some of the subtle changes associated with mental illness. "We're not yet able to use these scans in a diagnostic way," says Dr. David Silbersweig of the Weill Cornell Medical College in New York City. "But we're getting pretty specific about the areas of the brain that are implicated in a number of psychiatric disorders...
...fairly frequent basis last year, technicians at Massachusetts General Hospital injected 40 milligrams of cocaine directly into the bloodstream of cocaine addicts. With a set of defibrillators kept handy in case of cardiac arrest, the addicts were given MRIs and monitored for changes in heart rate and blood pressure. The subjects walked out of the hospital with some information on drug addiction, their anonymity and a gift certificate for $260 to a supermarket in exchange for a promise not to use any more cocaine that...
...particularly risky procedure; most implantations are done under local anesthesia and take 1-1 1/2 hours, according to WebMD. Afterwards, Cheney should keep his cell phone at least six inches away from his heart to avoid interference, and stay away from MRIs and certain types of welding equipment. But the new ones aren't bothered by microwave ovens, and for the most part pacemakers are safe and reliable...
...medicine at a prestigious teaching hospital, whose vocation is as spiritual as it is scientific. He does not believe in playing God, nor does he, like Alec Baldwin in Malice, believe he is God. But Gideon believes he is the instrument of something greater than the sum of his MRIS and charts. "He is willing to put himself on the line personally," Braugher says. "He's not afraid to sit at the bedside, not embarrassed by death and illness. He knows that inside the ill person is the same person who was once healthy. He considers it a privilege...