News tagged with magnetic resonance
What does love look like?
What does love look like? A dozen roses delivered on an ordinary weekday? Breakfast in bed? Or just a knowing glance between lovers?
Medicine & Health / Psychology & Psychiatry
17 hours ago |
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Obesity is associated with altered brain function
In most western countries the annual increase in the prevalence and the severity of obesity is currently substantial. Although obesity typically results simply from excessive energy intake, it is currently ...
Feb 09, 2012 |
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Football findings suggest concussions caused by series of hits
A two-year study of high school football players suggests that concussions are likely caused by many hits over time and not from a single blow to the head, as commonly believed.
Feb 02, 2012 |
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Protein structures give disease clues
Using some of the most powerful nuclear magnetic resonance equipment available, researchers at the University of California, Davis, are making discoveries about the shape and structure of biological molecules ...
Feb 01, 2012 |
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Heart failure is associated with loss of brain cells and a decline in mental processes
Australian researchers have found evidence that heart failure is associated with a decline in people's mental processes and a loss of grey matter in the brain. These changes can make it more difficult for ...
Medicine & Health / Cardiology
Jan 31, 2012 |
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A step closer to understanding, averting drug resistance
(Medical Xpress) -- The multidrug transporter EmrE functions as an asymmetric antiparallel dimer (molecule with two subunits). Drug (blue) transport from the inside to the outside of the cell membrane is accomplished ...
Jan 31, 2012 |
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New methods enable the early detection of Achilles tendon damage
Two biochemical methods, developed at the Centre of Excellence for High Field Magnetic Resonance at the MedUni Vienna by Vladimir Juras from the University Department of Radiodiagnostics, are enabling Achilles ...
Jan 31, 2012 |
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Addicts' cravings have different roots in men and women
When it comes to addiction, sex matters.
Medicine & Health / Psychology & Psychiatry
Jan 30, 2012 |
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Studying the chemistry as it happens in catalytic reactions
(PhysOrg.com) -- While retaining their speed, catalysts have lost some of their secrets, thanks to a new probe built by scientists at Pacific Northwest National Laboratory to help clarify the steps catalysts ...
Jan 30, 2012 |
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Lumbar disc degeneration more likely in overweight and obese adults
One of the largest studies to investigate lumbar spine disc degeneration found that adults who are overweight or obese were significantly more likely to have disc degeneration than those with a normal body mass index (BMI). ...
Jan 30, 2012 |
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Genetic regulation of metabolomic biomarkers -- paths to cardiovascular diseases and type 2 diabetes
In a study to the genetic variance of human metabolism, researchers have identified thirty one regions of the genome that were associated with levels of circulating metabolites, i.e., small molecules that ...
Jan 29, 2012 |
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Diagnostic brain tumor test could revolutionize care of patients
Researchers at UT Southwestern Medical Center have developed what they believe to be the first clinical application of a new imaging technique to diagnose brain tumors. The unique test could preclude the need ...
Jan 27, 2012 |
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JQI cool nano loudspeakers could makes for better MRIs, quantum computers
(PhysOrg.com) -- A team of physicists from the Joint Quantum Institute (JQI), the Neils Bohr Institute in Copenhagen, Denmark, and Harvard University has developed a theory describing how to both detect weak ...
Jan 25, 2012 |
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Foot and ankle structure differs between sprinters and non-sprinters
The skeletal structure of the foot and ankle differs significantly between human sprinters and non-sprinters, according to Penn State researchers. Their findings not only help explain why some people are faster runners than ...
Jan 24, 2012 |
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Scientists report first step in strategy for cell replacement therapy in Parkinson's disease
Induced pluripotent stem cells (iPSC) are a promising avenue for cell replacement therapy in neurologic diseases. For example, mouse and human iPSCs have been used to generate dopaminergic (DA) neurons that improve symptoms ...
Jan 24, 2012 |
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Magnetic resonance imaging
Magnetic Resonance Imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize the internal structure and function of the body. MRI provides much greater contrast between the different soft tissues of the body than computed tomography (CT) does, making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging. Unlike CT, it uses no ionizing radiation, but uses a powerful magnetic field to align the nuclear magnetization of (usually) hydrogen atoms in water in the body. Radio frequency (RF) fields are used to systematically alter the alignment of this magnetization, causing the hydrogen nuclei to produce a rotating magnetic field detectable by the scanner. This signal can be manipulated by additional magnetic fields to build up enough information to construct an image of the body.:36
Magnetic Resonance Imaging is a relatively new technology. The first MR image was published in 1973 and the first cross-sectional image of a living mouse was published in January 1974. The first studies performed on humans were published in 1977. By comparison, the first human X-ray image was taken in 1895.
Magnetic Resonance Imaging was developed from knowledge gained in the study of nuclear magnetic resonance. In its early years the technique was referred to as nuclear magnetic resonance imaging (NMRI). However, as the word nuclear was associated in the public mind with ionizing radiation exposure it is generally now referred to simply as MRI. Scientists still use the term NMRI when discussing non-medical devices operating on the same principles. The term Magnetic Resonance Tomography (MRT) is also sometimes used.
For more information about Magnetic resonance imaging, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.