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

created Feb 12, 2012 | popularity 4.5 / 5 (10) | comments 0 | with audio podcast

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 ...

Other Sciences / Social Sciences

created Nov 04, 2011 | popularity 4.3 / 5 (6) | comments 1 | with audio podcast report

'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

created May 02, 2012 | popularity 5 / 5 (2) | comments 0 | with audio podcast

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 ...

Other Sciences / Archaeology & Fossils

created Feb 07, 2011 | popularity 4.9 / 5 (16) | comments 30 | with audio podcast report

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

created Jan 04, 2011 | popularity 4.3 / 5 (19) | comments 6 | with audio podcast

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 ...

Biology / Plants & Animals

created Feb 28, 2011 | popularity 4.8 / 5 (5) | comments 4 | with audio podcast report

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

created Apr 04, 2011 | popularity 3.7 / 5 (6) | comments 1

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 ...

Physics / General Physics

created Mar 20, 2012 | popularity 5 / 5 (5) | comments 4 | with audio podcast

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 ...

Physics / Quantum Physics

created Feb 23, 2012 | popularity 4.7 / 5 (10) | comments 0 | with audio podcast

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. ...

Physics / General Physics

created Sep 30, 2011 | popularity 4.9 / 5 (7) | comments 24

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 ...

Physics / Quantum Physics

created Jan 25, 2012 | popularity 4.8 / 5 (4) | comments 0 | with audio podcast

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

created Jan 20, 2012 | popularity 5 / 5 (2) | comments 0 | with audio podcast

Deciphering hidden code reveals brain activity

(PhysOrg.com) -- By combining sophisticated mathematical techniques more commonly used by spies instead of scientists with the power and versatility of functional magnetic resonance imaging (fMRI), a Penn ...

Medicine & Health / Neuroscience

created Mar 28, 2011 | popularity 4.3 / 5 (9) | comments 0 | with audio podcast

Brain doesn't need vision at all in order to 'read' material

The portion of the brain responsible for visual reading doesn't require vision at all, according to a new study by researchers from the Hebrew University of Jerusalem and France.

Medicine & Health / Neuroscience

created Feb 22, 2011 | popularity 4.9 / 5 (10) | comments 4 | with audio podcast

Brain scan can tell if a smoker will quit (w/ Video)

(PhysOrg.com) -- Brain scans showing neural reactions to pro-health messages can predict if you'll keep that resolution to quit smoking more accurately than you yourself can. That's according to a new study ...

Medicine & Health / Psychology & Psychiatry

created Jan 31, 2011 | popularity 5 / 5 (1) | comments 0 | with audio podcast

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.