Imaging Techniques News and Research

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The sweet answer to a poor memory

Sweet tooth types out there will be delighted to learn that those sweet and sugary drinks may improve the memory.

16 Jan 2006

Astrocytes play a direct role in controlling blood flow in the brain - influencing Alzheimer's

New findings that long-overlooked brain cells play an important role in regulating blood flow in the brain call into question one of the basic assumptions underlying today's most sophisticated brain imaging techniques and could open a new frontier when it comes to understanding Alzheimer's disease.

6 Jan 2006

Gold nanorods injected into the bloodstream may be used to develop an advanced medical imaging tool

Researchers at Purdue University have taken a step toward developing a new type of ultra-sensitive medical imaging technique that works by shining a laser through the skin to detect tiny gold nanorods injected into the bloodstream.

25 Oct 2005

Key neural system at risk from prenatal exposure to alcohol

In a study of adult monkeys who were exposed to moderate amounts of alcohol in utero, scientists have found that prenatal exposure to alcohol - even in small doses - has pronounced effects on the development and function later in life of the brain's dopamine system, a critical component of the central nervous system that regulates many regions of the brain.

21 Sep 2005

Enhanced imaging techniques could improve medical diagnosis

Chris Wyatt is a Virginia Tech electrical engineer who is attempting to provide the medical community with better, quicker, and more relevant images of the human body. The side effects are not bad either - lower medical costs, new treatments, and earlier disease detection.

19 Sep 2005

Tools for studying the chemistry of the brain, neuron by neuron

The human brain is composed of billions of cells, each a separate entity that communicates with others. The chemical interaction of those cells determines personality, controls behavior and encodes memory; but much remains to be understood.

1 Sep 2005

Daydreaming linked to Alzheimer's disease

According to new research, Alzheimer's disease may be due to abnormalities in the regions of the brain that operate the "default state", a term used to describe the cognitive state people defer to when musing, daydreaming, or thinking to themselves.

30 Aug 2005

Parts of the brain used in daydreaming are the same areas that fail in people who have Alzheimer's disease

Researchers who used five different medical imaging techniques to study the brain activity of 764 people, including those with Alzheimer's disease, those on the brink of dementia, and healthy individuals, have found that the areas of the brain that young, healthy people use when daydreaming are the same areas that fail in people who have Alzheimer's disease.

25 Aug 2005

Early detection of Alzheimer's coming soon?

Alzheimer's disease is the most common form of old-age dementia and has become the fourth most common cause of death in the USA. The cause of the disease is protein deposits, called amyloid plaques, in the brain.

11 Aug 2005

Researchers look at how we understand visual images

The figure is famous: a deceptively simple line drawing that at first glance resembles a vase and, at the next, a pair of human faces in profile. When you look at this figure, your brain must rapidly decide what the various lines denote. Are they the outlines of the vase or the borders of two faces? How does your brain decide?

9 Aug 2005

Scientists have identified the first genetic mutations that cause the aorta to widen, tear and rupture

Finding biological markers that flag aneurysm, a bulging of the aorta that leads to dissection, a lengthwise separation of tissues in the artery wall, is critically important for early diagnosis.

25 Jul 2005

Brain computer map could prevent strokes

A grant from the Neurological Foundation of New Zealand will allow researchers at the University of Canterbury New Zealand, to fine-tune a computer model of cerebral bloodflow that could become a tool in predicting, treating and preventing strokes.

21 Jul 2005

New insights into brain cell metabolism from PET and MRI scans

By discovering a crucial piece of submicroscopic information about how the brain converts fuel into energy for neurons, Cornell University biophysicists have gleaned new insights into brain cell metabolism that will allow neurologists to better interpret data from such diagnostic tests as positron emission tomography (PET) scans and a specialized magnetic resonance imaging (MRI) test.

12 Jul 2005

Treatment options for skull base tumors

It is estimated that in 2000, more than 359,000 persons were living with a diagnosis of a primary brain tumor in the United States. In 2005, it is estimated that nearly 12,800 deaths will be associated with malignant tumors of the brain and other parts of the central nervous system. Brain tumors are the leading cause of cancer-related deaths in children age 19 and younger.

28 Jun 2005

Radiofrequency ablation (RFA) is an effective, longlasting treatment for small kidney tumors in selected patients

Massachusetts General Hospital (MGH) researchers have shown that radiofrequency ablation (RFA) - a minimally invasive way of destroying tissue - is an effective, longlasting treatment for small kidney tumors in selected patients.

20 Jun 2005

Researchers use novel cocktail of cells to coax muscle tissue to develop its own vascular network

For years, a major obstacle has dashed the hopes of creating "replacement parts" for the human body: the lack of an internal, nourishing blood system in engineered tissues. Without it, thicker tissues can't thrive, which has confined tissue engineering's practical application to thin skin, which can recruit blood vessels from underlying tissue.

20 Jun 2005

Fluorescence device to diagnose atherosclerosis and tumors

In a presentation at the Conference on Lasers and Electro-Optics (CLEO), researchers from Cedars-Sinai Medical Center's Biophotonics Research and Technology Development Laboratory described recent progress on a device that stimulates, collects and measures light emissions from body tissues to diagnose critical atherosclerotic plaques (vulnerable plaques) and aggressive brain tumors.

29 May 2005

New MRI techniques may help patients avoid knee surgery

Patients with suspected meniscal tears or other injuries to their knees may be able to avoid arthroscopic surgery by having a 3-Tesla MRI examination instead, two studies together indicate.

20 May 2005

Women more vulnerable to chronic drinking than men are

A study in the May issue of Alcoholism: Clinical & Experimental Research addresses this gap in research, using computed tomography (CT) to examine brain atrophy in the brains of alcoholic men and women. The findings support and build upon a prior hypothesis that women develop alcohol-related brain damage more readily than men.

16 May 2005

Clues about how alcoholic behavior is “switched” on

As part of an ongoing effort to understand the biochemical basis of alcohol abuse, scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have published two studies on how modulating receptors for dopamine - a chemical “signaler” in the brain’s reward circuits - affects drinking behavior in mice and rats.

9 May 2005