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Tag: "magnetic" at biology news

Blood test may help signal tumor's remission, return in throat cancer patients

...mor will return later. Clinical exams, X-rays, and magnetic resonance imaging (MRI) are currently used to monitor a patient’s progress, but observation by these methods has been difficult due to the scarring that occurs from radiation. “Finding better markers for detecting cancer as it begins and then moni...

Dual-imaging technique useful before -- and during -- brain surgery

...e first in the United States to combine functional magnetic resonance imaging (MRI) and “diffusion tensor tractography” data to outline important areas of brain function and their connections prior to surgery—and then transfer that data to the operating room to track those areas during actual surgery. This...

Plastic that grows on trees

...s the catalytic conversion was verified by nuclear magnetic resonance performed at the William R. Wiley Environmental Molecular Sciences Laboratory, a DOE national scientific user facility located at PNNL. During the swap, the molecule opens, Zhang said. “The key is to take advantage of the open form to pe...

3-D ultrasound scanner provides in-depth view of the brain

...lly ill patients when computed tomography (CT) and magnetic resonance imaging (MRI) equipment is unavailable, the researchers said. They report the development in a forthcoming issue of the journal Ultrasound in Medicine & Biology, which is currently available online. The work was supported by the Nationa...

Putting feelings into words produces therapeutic effects in the brain

...fellow in Lieberman’s laboratory — used functional magnetic resonance imaging to study subjects’ brain activity. “When you attach the word ‘angry,’ you see a decreased response in the amygdala,” Lieberman said. “When you attach the name ‘Harry,’ you don’t see the reduction in the amygdala response. “Whe...

Researchers use MRI to predict recovery after spinal cord injury

Using magnetic resonance imaging (MRI), radiologists can better predict the likelihood of full or partial recovery of patients with acute spinal cord injuries (SCI), according to a study published in the June issue of the journal Radiology. "Our study demonstrate...

How the brain's backup system compensates for stroke

... In their experiments, O'Shea and colleagues used magnetic pulses to temporarily and harmlessly disrupt funct... they scanned the subjects' brains with functional magnetic resonance imaging (fMRI) to detect changes in brain activity. This brain-scanning technique uses har...

Novel system developed to turn data into real-time, interactive 3-D images

Seeing is believing, especially in medicine. From magnetic resonance imaging (MRI) to computed tomography (CT) scan, images of the body’s tissues and organs have become the primary tools physicians use to diagnose disease and make recommendations for effective treatment. New, innovative data display techn...

A frown or a smile? Children with autism can't discern

... children with autism. While undergoing functional magnetic resonance imaging (fMRI), both groups were shown a series of faces depicting angry, fearful, happy and neutral expressions. In half the faces, the eyes were averted; with the other half, the faces stared back at the children. With the typically de...

Traumas like Sept. 11 make brains more reactive to fear

... very little evidence of that." Using functional magnetic resonance imaging to see how people's brains responded to photographs of fearful versus calm faces, the scans of 11 people who were within 1.5 miles of the World Trade Center on Sept. 11, 2001, were compared with those who were living more than 200 m...

Magnetic computer sensors may help study biomolecules

... of switches called "spin valves"—commonly used as magnetic sensors in the read heads of high-density disk dri...ly parallel medical and forensic studies—a sort of magnetic random access memory (MRAM) for biosciences. Spin valves are made by stacking thin layers of mate...

Natural antibiotics yield secrets to atom-level imaging technique

...ly at U-M from implementing plans to set up a high magnetic field solid-state NMR spectrometer facility and an NIH-funded program. ...

Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

...amural Research Program report on their functional magnetic resonance imaging (fMRI) study online during the week of January 29, 2007 in the Proceedings of the National Academy of Sciences. Reward system circuitry includes: the prefrontal cortex, seat of thinking and planning; the amygdala, a fear center;...

Using nanomagnets to enhance medical imaging

...he contrast between healthy and diseased tissue in magnetic resonance imaging (MRI)—as long as the concentrati...g for concentration. NIST scientists, making novel magnetic measurements, were able to monitor the molecules' decomposition and magnetic properties as the compo...

UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice

... Three days later, the team applied an alternating magnetic field to the tumor region, causing the magnetic nanospheres latched onto the tumor cells to change polarity thousands of times per second, instantan...

Imaging pinpoints brain regions that 'see the future'

... In this study, researchers relied on functional magnetic resonance imaging (fMRI) to capture patterns of brain activation as college students were given 10 seconds to develop a vivid mental image of themselves or a famous celebrity participating in a range of common life experiences. Presented with a se...

MIT model helps researchers 'see' brain development

...raphics techniques to brain images collected using magnetic resonance (MR) imaging, they have created a set of tools for tracking and measuring these folds over time. Their resulting model of cortical development may serve as a biomarker, or biological indicator, for early diagnosis of neurological disorders ...

Lithium builds gray matter in bipolar brains, UCLA study shows

... Imaging, used a novel method of three-dimensional magnetic resonance imaging (MRI) to map the entire surface of the brain in people diagnosed with bipolar disorder. When the researchers compared the brains of bipolar patients on lithium with those of people without the disorder and those of bipolar patie...

Common gene version optimizes thinking -- but with a possible downside

...esearchers used genetic, structural and functional magnetic resonance imaging, and post-mortem techniques to identify the human gene's variants and their functional consequences. Seventy five percent of subjects had the most common version of the gene, which boosted circuit activation, structural and function...

Newborn brains grow vision and movement regions first

...irst to systematically obtain very high resolution magnetic resonance imaging (MRI) scans on a large group of ...orth Carolina Hospitals were given high-resolution magnetic resonance imaging (MRI) scans in the first few weeks after birth. In terms of brain volume, the r...

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