News tagged with magnetic resonance imaging
New method to examine batteries -- MRI from the inside
There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...
Chemistry / Analytical Chemistry
Feb 12, 2012 |
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Monkeys with larger friend networks have more gray matter
New research in the UK on rhesus macaque monkeys has found for the first time that if they live in larger groups they develop more gray matter in parts of the brain involved in processing information on social ...
Pain and heartache are bound together in our brains
Like a jab in the arm with a red-hot poker, social rejection hurts. Literally. A new study finds that our brains make little distinction between the sting of being rebuffed by peers - or by a lover, boss or family member ...
Medicine & Health / Psychology & Psychiatry
Apr 04, 2011 |
3.7 / 5 (6) |
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Male New World monkeys attract females by washing in urine
(PhysOrg.com) -- Male capuchin monkeys have been observed to urinate on their hands and then rub the urine vigorously into their fur, and now a new study by scientists in Texas suggests the behavior signals ...
Early humans won at running; Neandertals won at walking
(PhysOrg.com) -- New research has compared the performance of the heels of modern-day distance runners to the heels of Neandertals and ancient Homo sapiens. The results show the Neandertals' heels were taller ...
Love: it's all the same to the brain
(PhysOrg.com) -- There are no differences between heterosexuals and homosexuals or between women and men in terms of the brain systems regulating romantic love, according to new UCL research published in the ...
Medicine & Health / Neuroscience
Jan 04, 2011 |
4.3 / 5 (19) |
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'Green' nanoparticles, that may enhance medication delivery and improve MRI performance
Researchers at Harvard-affiliated McLean Hospital have shown a new category of "green" nanoparticles comprised of a non-toxic, protein-based nanotechnology that can non-invasively cross the blood brain barrier and is capable ...
Nanotechnology / Bio & Medicine
May 02, 2012 |
5 / 5 (2) |
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Research offers new way to see inside solids
Researchers at Yale University have developed a new way of seeing inside solid objects, including animal bones and tissues, potentially opening a vast array of dense materials to a new type of detailed internal ...
Mar 20, 2012 |
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New study may lead to MRIs on a nanoscale
(PhysOrg.com) -- Magnetic resonance imaging (MRI) on the nanoscale and the ever-elusive quantum computer are among the advancements edging closer toward the realm of possibility, and a new study co-authored ...
Feb 23, 2012 |
4.7 / 5 (10) |
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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 |
4.8 / 5 (4) |
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Overcoming cancer drug resistance with nanoparticles
One of the ways in which cancer cells evade anticancer therapy is by producing a protein that pumps drugs out of the cell before these compounds can exert their cell-killing effects. A research team at Northwestern University ...
Nanotechnology / Bio & Medicine
Jan 20, 2012 |
5 / 5 (2) |
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Major US atom-smasher closes after 25 years (Update)
A powerful US atom-smasher that was the world's biggest particle collider for nearly a quarter-century closed forever on Friday, solidifying Europe's place as the world leader in physics. ...
Sep 30, 2011 |
4.9 / 5 (7) |
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Like humans, chimps are born with immature forebrains
In both chimpanzees and humans, portions of the brain that are critical for complex cognitive functions, including decision-making, self-awareness and creativity, are immature at birth. But there are important differences, ...
Aug 11, 2011 |
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Researchers apply NMR/MRI to microfluidic chromatography
By pairing an award-winning remote-detection version of NMR/MRI technology with a unique version of chromatography specifically designed for microfluidic chips, researchers with the U.S. Department of Energy ...
Chemistry / Analytical Chemistry
Jul 06, 2011 |
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'Critical baby step' taken for spying life on a molecular scale
(PhysOrg.com) -- The ability to image single biological molecules in a living cell is something that has long eluded researchers; however, a novel technique, using the structure of diamond, may well be able ...
May 19, 2011 |
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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.