Magnetic Resonance Imaging (MRI) News and Research

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Magnetic resonance imaging (MRI) uses a large magnet and radio waves to look at organs and structures inside your body. Health care professionals use MRI scans to diagnose a variety of conditions, from torn ligaments to tumors. MRIs are very useful for examining the brain and spinal cord. Also called: Magnetic resonance imaging, NMR, Nuclear magnetic resonance.

MS sufferers relieved as drug Tysabri goes back on the market

The Food and Drug Administration in the U.S. has given it's approval for the multiple sclerosis drug Tysabri to be put back on the market.

6 Jun 2006

FDA approves resumed marketing of Tysabri

The Food and Drug Administration (FDA) today approved an application for resumed marketing of Tysabri (natalizumab) subject to a special restricted distribution program.

5 Jun 2006

Helium-based MRI scans may one day allow closer look at smoker lungs

Aided by a powerful imaging technique, scientists have discovered they can detect smoking-related lung damage in healthy smokers who otherwise display none of the telltale signs of tobacco use.

5 Jun 2006

Bipolar disorder causes children to misinterpret facial expressions

Researchers at the National Institute of Mental Health (NIMH) have discovered why children with bipolar disorder tend to be more aggressive and irritable and have poorer social skills than healthy children.

31 May 2006

MRI cost-effective for some women at high-risk of breast cancer

A computer model simulation suggests that adding breast MRI screening may be cost-effective for women of certain ages who carry BRCA1 and BRCA2 gene mutations.

23 May 2006

MRI provides an early alert for polycystic kidney disease

A new method using magnetic resonance imaging (MRI) accurately tracks structural changes that predict functional changes earlier than standard blood and urine tests in people with autosomal dominant polycystic kidney disease (PKD).

17 May 2006

Brain research offers insight into mechanisms of prejudice

By scanning subjects' brains while they were thinking about people either politically like or different from them, researchers have found that different areas of the brain are active in the two cases.

17 May 2006

Researchers improve delivery of health care for pediatric patients

Having a young child scheduled for a magnetic resonance imaging (MRI) or computed tomography (CT) scan to diagnose a potentially serious condition can be worrying for parents.

11 May 2006

That dreadful feeling - most choose more pain sooner rather than less later

According to research into why people experience the feeling of dread, a team of Emory neuroscientists led by Gregory Berns, MD, PhD, used functional magnetic resonance imaging (fMRI) to determine the areas of the brain that are activated when someone gets that dreadful feeling.

9 May 2006

Diffusion tensor imaging provides clearer picture of cannabis effect on brain

Diffusion tensor imaging, a newly developed magnetic resonance imaging technique, could enable researchers to gain a better understanding of the effects of cannabis on the brain.

8 May 2006

fMRI used to show dread responses in brain

In order to better understand how people make decisions when the outcomes are known to be unpleasant, a team of Emory neuroscientists led by Gregory Berns, MD, PhD, used functional magnetic resonance imaging (fMRI) to determine the areas of the brain that are activated when someone experiences dread.

8 May 2006

Reward-motivated learning: mesolimbic activation precedes memory formation

The prospect of a paycheck, good grade, or promotion wonderfully concentrates the mind, and researchers have now identified the brain circuitry responsible for such reward-motivated learning.

3 May 2006

Brain scan could reveal who will get Alzheimer's disease

According to researchers in California, a brain scan may possibly identify structural and metabolic brain changes that predict dementia or cognitive decline in normal older adults.

3 May 2006

Human brain observed to shut down 'self'

Everybody has experienced a sense of "losing oneself" in an activity--whether a movie, sport, sex, or meditation. Now, researchers have caught the brain in the act of losing "self" as it shuts down introspection during a demanding sensory task. New findings show that self-related function actually shuts down during such intense sensory tasks.

28 Apr 2006

Link between expectancy, visual cues and the desire to smoke

In a study recently published in the journal Neuropsychopharmacology, researchers at the Montreal Neurological Institute (MNI) and the Department of Psychology at McGill University found that when people expect to smoke in the near future, external cues such as watching someone smoke affects their brain more than their level of craving or how long they have gone without a cigarette.

23 Apr 2006

Magnetic nanotechnology holds promise in fighting cancer

Detecting cancer and reinventing computing are two challenges that seemingly have little, if anything, to do with each other. That is, unless you are a nanotechnologist like Shan Wang, an associate professor of materials science and engineering and of electrical engineering at Stanford.

20 Apr 2006

Map of the human brain sheds new light on dyslexia

Mapping the human brain at The University of Auckland has revealed that abnormal brain activity appears to be the reason why some dyslexia sufferers find it difficult to learn to read.

20 Apr 2006

New research shows specific mechanisms may not exist for facial recognition

New research from Georgetown University Medical Center suggests that the brain may not have developed a specific ability for "understanding faces" but instead uses the same kind of pattern recognition techniques to distinguish between people as it uses to search for differences between other groups of objects, such as plants, animals and cars.

19 Apr 2006

Promising treatment for Huntington's disease soon to be tested clinically

At the Institut Curie, CNRS and Inserm researchers have shown that cysteamine, which is already used to treat a rare disease called cystinosis, prevents the death of neurons in Huntington's disease. Like Alzheimer's and Parkinson's, Huntington's disease, is characterized by the abnormal death of neurons.

19 Apr 2006

Functional imaging of numerical processing in adults and 4-y-old children

Four-year-olds who are still developing numerical abilities show activity in the same brain region during numerical tasks as do math-adept adults, Duke University researchers Jessica Cantlon, Kevin Pelphrey and colleagues report in the open access journal PLoS Biology.

11 Apr 2006