Imaging News and Research

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Accuracy of PET-CT for detecting recurrent ovarian cancer is high

The accuracy of PET-CT for detecting recurrent ovarian cancer is high, more accurate even than either CT or PET alone, says a new study by researchers from Massachusetts General Hospital in Boston.

3 May 2006

Coronal reformatted images speed radiologist's body CT readings

Coronal multiplanar reformatted images can replace conventionally used axial images for interpretation in the MDCT evaluation of the GI tract, improving the speed and accuracy of diagnosis

3 May 2006

CT angiography is highly accurate in detecting high-grade artery stenosis

MD-CTA (64-slice CT angiography) is highly accurate in detecting and grading extracranial internal carotid artery (ICA) stenoses in which the artery is closed between 70-90% when compared to color-coded Doppler sonography, power Doppler and B-flow ultrasound

3 May 2006

Early myocardial enhancement defects (dark spots) on multidetector CT are valuable predictors of myocardial viability

...in patients who have suffered a heart attack, reported doctors from the departments of cardiology and radiology at Rambam Medical Center in Haifa, Israel.

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

HCM detection rates doubled when genetic testing and imaging information are combined

Currently that genetic test correctly detects HCM only 40 percent of the time. But coupled with imaging information, the detection power of the test nearly doubles, to 79 percent, says Steve Ommen, M.D., director of Mayo's HCM Clinic and co-lead investigator of the Mayo Clinic research team.

28 Apr 2006

Researchers figure out how nuclear pores duplicate before cells divide

Researchers have long wondered how nuclear pores - the all-important channels that control the flow of information in and out of a cell's nucleus - double in number to prepare for the split to come when a cell divides. Now, for the first time, scientists at the Salk Institute for Biological Studies watched as new funnel-like pore structures formed from scratch, and inserted themselves into the nuclear membrane.

28 Apr 2006

New Hybrid virus may aid treatment of cancer

Researchers at The University of Texas M. D. Anderson Cancer Center have created a new class of hybrid virus and demonstrated its ability to find, highlight, and deliver genes to tumors in mice.

26 Apr 2006

New method allows heart beat triggers to be viewed and better understood

Researchers have developed unique chemical dyes that have made it possible to see what the naked eye has never seen before: action potentials, or voltage changes, of cardiac cells - including those deep inside the heart, which trigger and determine the pace of heartbeats.

25 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

New methods for revealing nerve-muscle activity in live animals

Picking up a pencil, running a marathon, even the simple act of breathing - every time we move a muscle we depend on a series of finely-tuned interactions at the junction of nerve fiber and muscle cell.

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 design lets mini-microscope observe cells in vivo

Two eyes are better than one. Or more precisely, two lines of sight are better than one. That's the word from researchers at the Stanford School of Medicine, who have applied this adage to the design of a tiny microscope that is about the size of an M&M.

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

Researchers develop system for observing nuclear motion

The cell is understood to be highly organized, with specialized areas for different functions and molecular motors shuttling components around.

18 Apr 2006

Significant differences in the patterns of mammography by race and ethnicity

Inadequate use of screening mammography may be an important reason that African-American women are more likely to be diagnosed with advanced stage breast cancer than members of other ethnic groups, according to a new study led by a University of California, San Francisco imaging specialist.

18 Apr 2006

New test for heart disease

Building on years of research on the way that blood flows through the heart valves, researchers from the California Institute of Technology and Oregon Health Science University have devised a new index for cardiac health based on a simple ultrasound test.

18 Apr 2006

Imaging of breast cancer diagnosed and treated with chemotherapy during pregnancy

Ultrasound provides a safe and accurate method of detecting breast cancers in pregnant women, as well as assessing response to chemotherapy, according to a study appearing in the April issue of Radiology.

13 Apr 2006