Word: detecting
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...need to make them address the real possibility of devastation caused by global warming and what should be done about it - now. Hally Hardie St. Ives, England Healthy Hearts I want to thank you for your story on the new, noninvasive heart-scanning technology that makes blockages easier to detect [Sept. 5]. But I must also damn you in the same breath. Although I'm a 59-year-old smoker, I've been fit most of my life. These days I scull three times a week and work out at the gym four times a week. Having read your article...
...drying them at new community washing stations. Ironically, Rwandans don't traditionally drink coffee. So importer Griswold took his customers to Rwanda to brew coffee with the farmers, showing them exactly the kind of taste and consistent quality the market is looking for. The farmers were taught to detect notes of blackberry, the consequences of improperly processing beans, and how coffee is graded. Since 2001, pearl has assisted 11 cooperatives with 15,000 members. "It's small, but it's growing like wildfire," says Clay, an American who worked in Rwanda before fleeing the violence. The co-ops' income...
...First, labeling the evidence as "indisputable" is a stretch. When taking drug tests, athletes submit two urine samples. To confirm a positive result, both tests must detect banned substances. France's National Laboratory for Drug Detection could test only the remaining, frozen B samples from six years ago. "For EPO, it has happened frequently that the A sample is not confirmed in the B sample," says Christiane Ayotte, a doping expert at the National Institute of Scientific Research in Montreal. Armstrong's 1999 and 2000 victories still stand, as do his five other wins, scored after testing...
...heart, and more than 9 million nuclear perfusion scans, which use mildly radioactive tracer molecules to measure how well the cardiac muscle is nourished. Improvements in computer processing power and software have made these tests more reliable and more conclusive than ever before. Stress tests, which help doctors detect ischemia, or lack of blood flow to the cardiac muscle, can be performed using either echocardiograms or nuclear scans. "Echocardiograms and nuclear perfusion scanning are the bread and butter of cardiac care," says Dr. Pamela Douglas, chief of cardiovascular medicine at Duke University Medical Center in Durham, N.C., and president...
Before 64-slice CT appeared on the scene, many physicians thought the future of cardiac scans belonged to a completely different technology: magnetic resonance imaging. Instead of X rays, MRI uses powerful electromagnets that are tuned to detect the hydrogen found in water--which in turn is present in most of the body's soft tissues. An MRI machine can produce astonishingly detailed images of the heart. Just as important, it can also determine how healthy the cardiac tissue is. For example, in a heart-attack patient, an MRI can pick out precisely which sections of the cardiac muscle...