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...colleagues recruited 91 kids ages 12 to 18 and asked them to fill out a questionnaire about their tendency to engage in behaviors such as driving without a license, having unprotected sex and using drugs. Then they had the kids undergo a relatively new kind of brain scan called diffusion tensor imaging, a type of magnetic resonance imaging that is used to look at dense tissues like white matter. After analyzing the scans, the authors found a strong correlation between how risky the students described their behavior to be and how sophisticated their white matter was. The more mature...
...screening for the gene, even among those with a family history of Alzheimer's, since most people who have the risky version of ApoE4 don't have the necessary gene copies. But looking more closely at people who have a family history of the disease by adding an fMRI scan such as the one Rao conducted to the genetic screen could help doctors select those who do seem to be in the greatest danger of being claimed by the disorder. (See the Top 10 Celebrity Twitter Feeds...
That's helping to drive costs through the roof. I had no idea when they wheeled me into the CT salon to detect my kidney stone that I was getting not one but two CAT scans performed - abdominal and pelvic - at almost $3,500 a pop. I've since learned from medical experts that one would have sufficed. And even if my insurance provider did end up paying closer to $2,000 for each scan, that's still well above the less than $1,500 average CT screening cost...
...have to do with the approach that hospitals here take in recovering costs for expensive equipment. There are a whole range of reasons why that might be true, but the point is, is that it's not like people out there are - would automatically be prevented from getting CAT scans if we just tried to think when is a CAT scan or an MRI working and appropriate in improving care and when...
What's more, detecting lies using fMRI in highly controlled experimental conditions with button-pushing volunteers bears little resemblance to identifying deception in the real world, where no single lie is identical to the next and most are too elaborately constructed to pin down on a brain scan. Although fMRI allows us to "track the thought process in real time - and that's a huge advance over the polygraph," says Ruben Gur at the University of Pennsylvania, people should not have the "naive view that whenever someone lies, there will be the same [kind of] response that will then...