Latest Cerebral blood flow Stories

2009-09-23 08:00:35

The organs of the inner ear have a direct effect on brain blood flow, independent of blood pressure and CO2 levels in the blood. Researchers writing in the open access journal BMC Neuroscience used a series of human centrifuge experiments to investigate the effects of stimulation of the otoliths and semi-circular canals on cerebrovascular response. Dr. Jorge Serrador, from Harvard Medical School, worked with a team of researchers, including NASA scientists, to carry out the tests. He said,...

2009-05-18 11:33:00

Rapid volume perfusion acquisition, intuitive post-processing and remote access highlight new CT Neuro Engine for comprehensive workflow efficiency and patient care MALVERN, Pa., May 18 /PRNewswire/ -- As the third leading cause of death in the United States, stroke effects approximately 795,000 Americans each year -- with an estimated 610,000 accounting as first-time cases(1). And for a stroke victim, the first few hours are the defining time when a quick and effective diagnosis can mean...

2009-05-12 07:27:02

Alcohol-use disorders (AUDs) can damage the brain, particularly the frontal and parietal cortices, although this damage is at least partially reversible with sustained abstinence from alcohol. Chronic smoking is extremely common among individuals with AUDs. A new study has used longitudinal magnetic resonance imaging (MRI) of brain blood flow to show that smoking makes it harder for brain blood flow to recover from long-term heavy drinking. Results will be published in the August issue of...

2009-02-03 09:54:01

U.S. medical researchers have discovered a grid of small arteries at the surface of the brain redirects and controls blood flow following a stroke. University of California-San Diego scientists say they found the mesh-like network adjusts to restore normal supply when blood slows after a stroke. This is optimistic news, said Professor David Kleinfeld, whose team studies blood flow in animal models of stroke. Damage from stroke can continue for hours or even days as compromised brain tissue...

2008-12-01 14:02:49

Older adults who exercise regularly show increased cerebral blood flow and a greater number of small blood vessels in the brain, according to findings presented today at the annual meeting of the Radiological Society of North America (RSNA). The study, conducted at the University of North Carolina (UNC) "“ Chapel Hill, is the first to compare brain scans of older adults who exercise to brain scans of those who do not. "Our results show that exercise may reduce age-related changes in...

2008-11-17 09:49:07

The blood-brain barrier is a powerful guard that lets nutrients in while keeping foreign matter out. Normally, that's a good thing. But when doctors are trying to treat brain conditions like Alzheimer's disease and stroke, it can throw up a huge roadblock to effective therapy. Researchers from Saint Louis University believe they've found a way around this ever-vigilant sentinel. In a study conducted in mice, they were able to isolate the specific gatekeeper responsible for keeping a...

2007-09-05 11:45:00

On Earth, we all know gravity affects everything around us. But did you know gravity also influences what goes on inside our bodies? Every time we stand up, gravity pulls blood into parts of the body that are below the heart. A simple experiment you can do to prove this is to let your hand hang down for a short time then examine the veins in the back of your hand. These veins will get bigger because they are full of blood. But raise your arm above your head, and these veins, emptied of...

2005-08-30 14:16:03

OAK BROOK, Ill.-  The amount of blood flowing into the brain may play a larger role in the development of dementia than previously believed, according to a study in the September issue of the journal Radiology. Researchers from Leiden University Medical Center in the Netherlands used magnetic resonance imaging (MRI) to examine the brains of elderly patients with and without dementia related to Alzheimer's or Parkinson's disease. As expected, MR images showed that the patients with...

Word of the Day
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.