Tag: "volume" at medical news

UCSD, Salk researchers define role of abnormal muscle, fat & liver in common metabolic disorder

...ells and a resulting 30-50 percent increase in the volume of remaining fat cells. According to the researchers, this indicates an essential role for PPARgamma in the normal function of fat cells. Because past studies with fatless animal models have shown the importance of fat tissue in maintaining muscle...

Using fMRI technology to understand hyperlexia

...keltaub, a PhD student, draws an analogy of to the volume control on a radio. "A region of the brain implicated in reading skills, the left superior temporal cortex, is like a dial. When the dial is turned up, you find accelerated readers, or hyperlexics. When the dial is turned down, as has been shown for...

Study expands understanding of alcoholic memory disorder

...lzheimer's patients were comparable in significant volume loss in the hippocampus, which plays an important role in memory functions. Greater hippocampal damage was correlated to a higher memory deterioration index score for the Korsakoff's patients. The study authors also reported a similar correlation in ...

Moderate alcohol use may be associated with brain shrinkage

...ronic alcohol abuse has been associated with brain volume loss, this study suggests that even moderate alcoh...nical significance of the small reduction of brain volume associated with moderate alcohol drinking is unknown. "Because MRI measures in the brain were only...

A new technique detects earliest signs of Alzheimer's in healthy people

...ng realized. Using a new technique to measure the volume of the brain, they were able to identify healthy i...m created by British researchers for measuring the volume changes of the whole brain, and adapted it to measure a specific region of the brain: the medial-tem...

Regionalizing some surgical procedures would not result in unreasonable travel burdens on patients

...ss the travel time implications of setting minimum volume standards for two surgical procedures - pancreatic...ow-volume hospital. If not set too high, hospital volume standards could be implemented for selected operations without imposing unreasonable travel burdens ...

Microneedles: Report describes progress in new technology for painless drug delivery

... of microneedle arrays customized for the type and volume of drug to be delivered, the time period of use, and most importantly, minimizing pain. "There are trade offs between getting needles to go into the skin easily, getting drugs to deliver easily and making needles that don't hurt," Prausnitz said. "N...

Study finds subtle brain damage in some HIV patients on drug therapy

...ccurring." MRI measurements also revealed that the volume of the brain structure known as the thalamus was smaller both in viremic and in virally suppressed participants than in controls, an indication of damage in this region. The thalamus serves as a relay station for sensory information. Results of the b...

Hearing aid research gets federal boost

...f criteria including directionality, frequency, or volume of sounds, Miles said. For starters, researchers will focus on directionality, since most hearing-aid users want to hear the speaker or sound source they are facing more than other ambient room noise. Miles' laboratory will be in charge of designing ...

New studies show factors responsible for enhanced response to music

...lar mental tasks. Structural MRI measures regional volume of gray and white matter in the brain. A total of 73 five- to seven-year-old children were enrolled in the study and divided into three groups: An "Instrumental" group, consisting of 41 children (17 girls and 24 boys) who were just beginning to study...

OHSU researchers study physical and mental impacts of exercise on the brain

... the exercise period, scientists then measured the volume of small blood vessels, called capillaries, in the...roups. "What we found was a higher brain capillary volume in those monkeys who exercised than in those monkeys who did not. Specifically, changes were most no...

Scientists map maturation of the human brain

...is then possible to map the changes in gray matter volume at each of these single MRI points (total 65,536 points) on the brain surface in extraordinary detail. Since some children are scanned many times, it is possible to extrapolate the points in between and make a time-lapse movie depicting the dynamic p...

Exercise has a more powerful impact on the brain than previously thought

...only used by oncologists in studies of cancer. The volume of brain tissue occupied by capillaries in the exercising monkeys was shown to have increased relative to values in 3 unexercised controls. "The greatest increase was in the layers of the cortex containing the large neurons that project to the spinal...

Study of deadliest form of stroke demostrates much lower mortality rates at high caseload hospitals

...rhage (SAH), the deadliest form of stroke, and the volume of such cases seen at the treating hospital. The ...ship in SAH cases, showed patients treated at high volume SAH centers had 40 percent better chance of leaving the hospital alive than patients treated at low ...

Overweight boys outweigh girls in stress response, study finds

...reasing blood vessel constriction as well as fluid volume inside vessels. The kidneys help with volume by holding onto sodium. Natriuresis is the bodys natural way of eliminating that sodium after the st...

Drug improves brain structure in Alzheimer's patients

...y and how donepezil slowed the loss of hippocampal volume but we think the drug may help to improve cognitio...study, the researchers discovered that hippocampal volume decreased by 8.2 percent in the placebo group compared with a 0.4 percent decrease in those taking d...

Study identifies risk factors for refractive surgery malpractice lawsuits and claims

...en 1996 to 2002. The study found that high patient volume was the greatest risk factor for increased chances of incurring malpractice claims or lawsuits. High patient volume, when coupled with other risk factors, increased the likelihood of being sued. Other risk factors included: Prior claims or lawsuits...

Annals of Internal Medicine, tip sheet, October 21, 2003

...Internal Medicine find that simple calculations of volume vs. outcome usually do not consider patient charac...g sometimes weakened the relationship between high volume and good outcomes (Article, p. 658). In the other study, colon cancer-specific outcomes did not vary...

The changing face of severe asthma

...can exhale in a second, known as forced expiratory volume in one second or FEV1, is one of the primary measures used to diagnose and categorize a patient's asthma. Patients are deemed to have severe asthma when their FEV1 is less than 60 percent of the average value for healthy people of their size and age....

Improving physical fitness, insulin sensitivity may help latino children at risk for type 2 diabetes

...scular fitness by logging each child's VO2max (the volume of oxygen their bodies could use while exercising full-tilt) and found that the greater their VO2max, the lower the kids' blood pressure. They also found that kids with three or more features of the metabolic syndrome had much lower VO2max than kids ...

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