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Tag: "imaging" at biology news

Stroke symptoms common among general population

...e, one of the JAMA/Archives journals. Using brain imaging to screen individuals without a history of stroke reveals that many have had an undiagnosed or silent stroke, according to background information in the article. One previous study found that 11 percent of individuals age 55 to 64, 22 percent of tho...

Fast test for low blood flow in dogs detects early heart trouble

Working with dogs and using the latest in imaging software and machinery, also known as a 64-slice C...grams, but also positron electron tomography (PET) imaging or magnetic resonance imaging," he says. "The new technique could also help eliminate many unnec...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...ng them, testing them in test tubes and cells, and imaging them bound to Scp1 in 3D," says Noel. This will set the stage for the rational fine-tuning of their efficacy using an established process Noel likens to molecular dentistry, because his group is striving to shape inhibitory molecules to fit the groov...

Powerful genome ID method extended to humans

... fragments by so-called restriction enzymes. By imaging large numbers of an organism's DNA molecules, optical mapping can produce a map of its genome at a relatively low cost. An optical map lacks the minute detail of a genetic sequence, but it makes up for that shortcoming in other ways, said Philip G...

Muscle and bone from an ink-jet printer

...e versatile ink-jet system with advanced live cell imaging developed at Carnegie Mellon’s Robotics Institute and Molecular Biosensor and Imaging Center to further understand how stem cells differentiate into bone, muscle, or other cell types. ...

Nanoparticle assembly enters the fast lane

...ynthesized and assembled nanosystems with multiple imaging techniques, using beams of light and electrons as well as high-intensity x-rays at Brookhaven's National Synchrotron Light Source. The scientists look to further improve the controllability of the system, focusing next on the size of the nanoparticle...

New research shows big improvement in survival after stroke

...d with an increase in hospital admission and brain imaging during the most severe phase of the illness. Stro...orge Institute, the rate of hospitalisation, brain imaging (CT or MRI scans) and medical attention have all increased dramatically over the period. "In 1981, 6...

U-M researchers use nanoparticles to target brain cancer

...with a contrast agent, researchers were able using imaging techniques to determine whether the drug actually got to the tumor. This technique could have potential to diagnosis brain tumors early, as well as to help researchers determine when to deliver a drug or when to administer the next dose. Further l...

New dyslexia theory blames 'noise'

...this hypothesis with functional magnetic resonance imaging trials. Lu and his collaborators interpret the new results as a rejection of the "magnocellular hypothesis" - named for a type of neuron involved in processing fast visual information - that influenced dyslexia research for decades. The resear...

Brain regions do not communicate efficiently in adults with autism

... other studies using functional magnetic resonance imaging and positron emission tomography, both of which gauge brain activity by measuring blood flow. Post-mortem studies also suggest impairments in communication at the level of individual brain cells. This over and under abundance of neural connecti...

Altered perception of reward in human cocaine addiction

...brain activity using functional magnetic resonance imaging (fMRI) and/or recordings of event-related potentials (ERP). In one study, subjects were given a monetary reward for their performance on an attention task. Subjects were given one of three amounts (no money, one cent, or 45 cents) for each correct...

Quantum dots reviewed -- Could these nanoparticles hold the cure to cancer?

...properties and applications, toxic effects, use in imaging and analysis plus Quantum Dot drug delivery syste...nding the pathophysiology of cancer and real time imaging and screening of tumours. The level of details provided in this valuable review paper could easily...

Nano-devices hold promise for early-stage cancer detection

...se micro- and nanotechnology-based bio-sensors and imaging devices through the support of a recently announce...iaturized, low-cost and easy-to-use prototypes for imaging and sensing in healthcare and environmental applications. "The imaging and sensing technologies b...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...ed each volunteer's brain using magnetic resonance imaging (MRI) in order to create a precise map of the brain's structure, and combined that with their PET scans to find the exact areas of dopamine activity. The volunteers answered questions from two standardized questionnaires repeatedly both in a cont...

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

...ients?brains were scanned using magnetic resonance imaging (MRI) and proton MR-spectroscopy upon admission and after short-term sobriety. Only the patients that managed to abstain from alcohol without receiving any psychotherapeutic medication were included in the study, and those with secondary alcohol-indu...

More kidney cancer is detected and treated early, yet death rate rises

...more and more with the widespread use of abdominal imaging studies, such as MRIs and CAT scans. These small kidney tumors are considered curable by surgery, which has led to a rise in surgery for kidney cancer. Even as early detection and surgical treatment increased, however, mortality rates caused by kid...

Reading Shakespeare has dramatic effect on human brain

...halography (MEG) and functional magnetic resonance imaging (FMI) to test which areas of the brain are most affected and the kind of impact it could have in maintaining healthy brain activity. Professor Davis added: "This interdisciplinary work is good for brain science because it offers permanent scripts o...

Three-dimensional, miniature endoscope opens new diagnostic possibilities

... endoscope is the first to allow three-dimensional imaging of areas inside the body," says Guillermo Tearney,...nior author. "Its ability to go places that other imaging tools cannot reach opens new possibilities for medical diagnosis and eventually treatment." Standa...

Emotional control circuit of brain's fear response discovered

...esolution version of functional magnetic resonance imaging (fMRI). The standard Stroop test asks participants to name the ink color of a printed color word. Performance is typically worse if word and color are incongruent (e.g., YELLOW printed in red ink) than when the two attributes are congruent (RED ...

Chemotherapy temporarily affects the structures of the human brain

...e data that is available is only available through imaging and is not consistent in the long-term. In addition, lack of controls in studies makes it difficult discern cancer- versus drug-effects. Led by Masatoshi Inagaki, M.D., Ph.D., of the Breast Cancer Survivors' Brain MRI Database Group in Japan, rese...

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