New research suggests a specialized form of MRI technology can detect changes in the brain when someone lies. In a small study, researchers used "functional" MRI and the polygraph and asked about half of their 12 study participants to lie and try to beat the tests while the others were asked to tell the truth about whether or not they shot a gun with blank bullets. Researchers found both the MRI and the polygraph, which measures respiration, blood pressure and skin changes accurately detected truthful responses from deceptive ones. Researchers say they observed changes in four areas of the brain during deceptive responses and changes in two areas of the brain during truth telling. Researchers expect three to five more years of study will be needed before MRI could be widely used for lie detection. The study was presented at the annual meeting of the Radiological Society of North America underway in Chicago.
Each year, thousands of Americans learn they have cancer. New research suggests doctors could soon have a new tool for predicting who will fare well during their cancer fight and who is more likely to suffer a relapse.
University of Florida doctors evaluated more than 100 patients who underwent bone marrow transplants for cancers like leukemia and lymphoma. They found that patients whose blood contained high levels of a protein called I-l-12 were less likely to have a relapse. "It tells us now that having a normal immune system and adequate levels of I-l-12 are important also in reducing cancer itself," says Dr. Vijay Redd, a Cancer Physician.
In fact, those with low levels of I-l-12 were twice as likely to relapse compared with those with higher levels of the protein. So, researchers say doctors may someday offer I-l-12 injections along with other therapies as a sort of cancer vaccine, to give patients more lead time in their fight against the disease.