Magnetic Resonance Imaging News and Research

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Magnetic resonance imaging (MRI) is an imaging technique which physicians use for the diagnosis and treatment of medical conditions.

MRI and CT used to map intelligence in the brain

Neuroscientists at the California Institute of Technology (Caltech) have conducted the most comprehensive brain mapping to date of the cognitive abilities measured by the Wechsler Adult Intelligence Scale (WAIS), the most widely used intelligence test in the world.

11 Mar 2009

Alzheimer's marker amyloid beta 42 linked to brain damage

Researchers at Washington University School of Medicine in St. Louis have linked a potential indicator of Alzheimer's disease to brain damage in humans with no signs of mental impairment.

11 Mar 2009

Tiny samples could yield big predictive markers for pancreatic cancer

A handful of proteins, detected in incredibly tiny amounts, may one day help doctors distinguish between a harmless lesion in the pancreas and a potentially deadly one, say researchers at Fox Chase Cancer Center.

11 Mar 2009

Brain damage found in cognitively normal people with Alzheimer's marker

Researchers at Washington University School of Medicine in St. Louis have linked a potential indicator of Alzheimer's disease to brain damage in humans with no signs of mental impairment.

11 Mar 2009

Scientists identify the neural circuitry of first impressions

Neuroscientists at New York University and Harvard University have identified the neural systems involved in forming first impressions of others.

8 Mar 2009

Lack of strategies to manage MRI wait lists a key reason for excessive wait times

A new study headed by Dr. Tom Feasby, Dean of UCalgary's Faculty of Medicine, shows that while Canada lags behind other countries in the number of diagnostic imaging devices, more machines are not the only solution to long wait times.

5 Mar 2009

FDA warning on risk of wearing medicated patches during MRIs

Certain adhesive patches that deliver medication through the skin have been found to be a risk to patient safety. The patches, if worn while undergoing magnetic resonance imaging scans or MRIs, can cause skin burns, says the U.S. Food and Drug Administration today.

5 Mar 2009

Study sheds light on underlying neural mechanism behind macular degeneration

In macular degeneration, the most common form of adult blindness, patients progressively lose vision in the center of their visual field, thereby depriving the corresponding part of the visual cortex of input.

3 Mar 2009

What role does the brain play in some women's lack of sexual desire?

More than 40 percent of women ages 18-59 experience sexual dysfunction, with lack of sexual interest - hypoactive sexual desire disorder, or HSDD - being the most commonly reported complaint, according to medical researchers.

2 Mar 2009

fMRI captures wave of brain activity linked to anticipation

Neuroscientists at Georgetown University Medical Center have, for the first time, shown what brain activity looks like when someone anticipates an action or sensory input which soon follows.

26 Feb 2009

Physical fitness improves spatial memory, increases size of hippocampi

When it comes to the hippocampus, a brain structure vital to certain types of memory, size matters.

24 Feb 2009

Radiolabeled nanoparticles boost PET-CT combination imaging

In an attempt to decrease the amount of cancer-targeting nanoparticle needed to image tumors, a team of investigators at the Massachusetts General Hospital and Harvard Medical School has developed a simple method for creating iron oxide nanoparticles labeled with 18F, a radioisotope that is easily detected using positron emission tomography (PET). The result is a nanoparticle that can be imaged using PET, computerized tomography (CT), and fluorescence imaging.

23 Feb 2009

Nanoparticles detect dying cancer cells

Two years ago, researchers at the University of South Australia discovered a new molecular marker specific for chemotherapy-induced cancer cell death. Now, those same investigators have used this marker to develop an imaging agent that can pinpoint tumor cell death using magnetic resonance imaging.

23 Feb 2009

New imaging techniques let scientists see biomolecules more clearly

Scientists have always wanted to take a closer look at biological systems and materials. From the magnifying glass to the electron microscope, they have developed increasingly sophisticated imaging devices.

23 Feb 2009

Decoding short-term memory with functional magnetic resonance imaging

People voluntarily pick what information they store in short-term memory.

22 Feb 2009

FDA approves humanitarian device exemption for deep brain stimulator

The U.S. Food and Drug Administration has approved a humanitarian device exemption for the first implantable device that delivers intermittent electrical therapy deep within the brain to suppress the symptoms associated with severe obsessive-compulsive disorder (OCD).

20 Feb 2009

Echoes discovered in early visual brain areas play role in working memory

Vanderbilt University researchers have discovered that early visual areas, long believed to play no role in higher cognitive functions such as memory, retain information previously hidden from brain studies.

20 Feb 2009

Differences in language-related brain activity affected by sex?

Men show greater activation than women in the brain regions connected to language, according to researchers from CNRS, Université de Montpellier I and Montpellier III.

18 Feb 2009

Video imaging technique provides dynamic view of airway obstruction

A video imaging technique demonstrates that the soft palate, the tissue at the back of the roof of the mouth, is more elongated and angled in patients with obstructive sleep apnea both when they sleep and when they are awake, according to a report in the February issue of Archives of Otolaryngology-Head & Neck Surgery.

17 Feb 2009

New guidelines emphasize use of breast MRI to supplement standard imaging

Updated guidelines for physicians that represent best practices for using magnetic resonance imaging (MRI) to newly diagnose breast cancer and to make treatment decisions for breast cancer were published today in the Journal of the National Comprehensive Cancer Network.

17 Feb 2009