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Leaks in a barrier between blood vessels and brain cells could contribute to the development of Alzheimer's.
January 23, 2015 As vessels become more porous, researchers say, they allow toxins in the bloodstream to reach, and damage, delicate brain cells and raise the risk for dementia.
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July 20, 2014 Back pain is common. Nearly all of us have at least one episode in our lives, and two-thirds of us will have it repeatedly. Exercise, though it may seem counterintuitive, is often the best medicine.
Younger women are most likely to go to the doctor with a headache.
March 18, 2014 In 2010, 15 percent of people who went to the doctor for a headache got a brain scan, even though the vast majority of headaches aren't symptoms of something seriously wrong.
CT scans are valuable for finding cancers, but deliver a lot of radiation in the process. That's an especially big concern for children.
February 20, 2014 CT scans are good at finding cancer, but their hefty dose of X-rays increases the risk of future cancers. Children are especially vulnerable. A new form of MRI can find tumors without radiation.
Spinal MRIs similar to these found infections that many patients hadn't realized they had.
June 19, 2013 Some people exposed to tainted steroid injections in last year's meningitis outbreak had slow-moving spinal infections that escaped detection until they had MRI scans. Many of the people didn't have symptoms, or thought the pain was due to their longstanding back problems.
Who's there? A radiologist studies digital X-rays in a viewing room at what is now called the Walter Reed National Military Medical Center in Bethesda, Md.
Seth Rossman/U.S. Navy
November 30, 2012 Radiologists have an image problem with patients. Many of them don't know who the doctors are or what they do. A survey finds that only about half of patients receiving CT scans even knew radiologists are doctors.
The warmer orange colors show parts of the brain most active during improvisational rap. The blue regions are most active when rappers performed a memorized piece.
November 15, 2012 Scientists have found rappers and jazz musicians use their brains in similar ways when it comes to improvisation. Brain scans show distinct differences in which parts of the brain are most active during rap performances of memorized pieces compared with those that are done freestyle.
Do you really need that MRI, or is your doctor just trying to make a buck?
December 1, 2011 Maybe you didn't need that MRI, but your doctor did. Scans are more likely to find no problems if doctors make money from the MRI, a study concludes. Congress and the states have tried to crack down on doctors self-referring to scanners they own, but the practice continues to drive up health care costs.
August 24, 2011 The latest Medicare data show that doctors frequently order MRI scans for patients with back pain before trying recommended treatments such as physical therapy.
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