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Aneurysm. you'll get a c.a.t. scan for this. this p.e.t. scan study is promising. but i'm not sure it will change the way we practice. it's only about 80 patients in the study. it was accurate in about 90%. we still have a long way to go for p.e.t. scan to come in this field. we use p.e.t. scan in our field for kidney cancers, and 50/50 can guess whether there's a cancer in the body. for bone imaging it would work. >> what does it show that a c.a.t. scan doesn't? >> they're seeing where the aggregate of the cells, sometimes with this kind of plaque formation you would have inflammation. it det...

All the time. c.a.t. scans, we have the angiogram, that shows what blockage you have. c.a.t. scans that tell you if your coronary arteries are getting calcified. we have stress tests. these are what we call noninvasive tests, jamie. now we have a new one still in the works but it's very exciting. they're usie ining p.e.t. scans technology. the imaging from p.e.t. tells you what area of the body is heating up. we want to know if the plaque is heating up in your coronary arteries. if the plaque ruptures, that's when you have a heart attack. this may be important in the next year or two, to tell ...

Unconscious? >> we don't know all the facts here but usually it is something to do with not knowing. you may have a plaque in your coronary artery and then all of a sudden that plaque ruptures or you get a blood clot in there. this is how it happens. then you get an arrhythmia where your heart beats irregularly. then you get sudden death. if you knew you had heart disease and you were taking aspirin and drugs to lower your cholesterol. that decreases the risk of what i described happening dramatically. he may not have known that. same thing with tim russert. tim russert was on a treadmill and ...

Coronary artery disease that means he has a buildup of plaque, the stuff that contains cholesterol in his arteries and keeps building up. for some reason, they haven't been able to control it with medications. even after he had the bypass. he has not had a heart attack and a heart attack occurs when that plaque ruptures and causes a complete disruption of the blood flow to the heart. he has had these two procedures which are called revascularization, increasing the blood flow. this is a die gramm of how the accident work, a tube is placed in the heart and the piece of metal is the stent and re...

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