Word: ct
(lookup in dictionary)
(lookup stats)
Dates: during 2000-2009
Sort By: most recent first
(reverse)
...operating table while Rezai and a team of surgeons drill a hole about as large as a dime in the crown of his head. Rezai then threads a wire just 4 microns thick--or four-thousandths of a millimeter--into Stipp's brain. Guided in part by CT scans and in part by real-time readings of electrical activity that the probe encounters as it passes different neural structures, surgeons aim for the subthalamic nucleus (STN), an olive-size clump of tissue deep in the basal ganglia that helps govern motor control. For much of the morning, Stipp's right...
Still, a few scientists may get the chance to examine Lucy while she is in the U.S. A team headed by anthropologist John Kappelman, of the University of Texas at Austin, has requested permission to conduct a high-resolution CT scan of the bones. By scrutinizing their internal architecture, "we can study the ways in which [Lucy's] skeleton was designed for various types of movement and posture," Kappelman explains. Researchers already know that Lucy is likely a direct ancestor of our own species, Homo sapiens, stood about 3.5 ft. (1 m) tall, weighed about...
...Voting took place throughout the swelteringly hot day, while the candidates gave speeches inside the packed Iowa State basketball arena. Results were announced shortly after 8:30 pm CT. The quadrennial spectacle is unlike any other in American politics. Amidst giant tents, huge barbeque spreads, kids' rides and live music of all genres, supporters of the candidates were bused in from all over Iowa to cast votes. The proceeds from ticket sales go to the Iowa Republican Party, which stages the event as a fundraiser. It has, however, taken on a life of its own, becoming a test of organizational...
...walls that signifies heart disease. Lepor says that CTCA gives off no more radiation than the routinely used diagnostic nuclear stress test, which also detects plaque deposits, but only those that are big enough to block 70% of the artery. "The risk-benefit assessment is in favor of cardiac CT to be used in a judicious fashion," says Lepor, who describes good candidates for the scan as male, over age 40 with at least one risk factor. But there's no need to image patients who don't have any risk factors. "This is not a test that should...
...Down the line, Einstein believes his team's conclusions will boost cardiac diagnostic technology and prompt major manufacturers to improve it. "This is an impetus toward accelerating the pace of research in cardiac CT scans so as to reduce the dose to patients," says Einstein...