News tagged with magnetic resonance imaging

Advance makes MRI scans more than seven times faster

(PhysOrg.com) -- An international team of physicists and neuroscientists has reported a breakthrough in magnetic resonance imaging that allows brain scans more than seven times faster than currently possible.

Physics / General Physics

created Jan 05, 2011 | popularity 4.9 / 5 (20) | comments 4 | with audio podcast

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

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

The brain as a 'task machine'

The portion of the brain responsible for visual reading doesn't require vision at all, according to a new study published online on February 17 in Current Biology. Brain imaging studies of blind people as they read words ...

Medicine & Health / Neuroscience

created Feb 17, 2011 | popularity 4.3 / 5 (12) | comments 9 | 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

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

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

Chess experts use brain differently than amateurs

Experts use different parts of their brains than amateurs, maximizing intuition, goal-seeking and pattern-recognition, said a study out Thursday that examined players of shogi, or Japanese chess.

Medicine & Health / Neuroscience

created Jan 20, 2011 | popularity 4.8 / 5 (9) | comments 1

Researchers can predict your video game aptitude by imaging your brain

Researchers report that they can predict "with unprecedented accuracy" how well you will do on a complex task such as a strategic video game simply by analyzing activity in a specific region of your brain.

Medicine & Health / Neuroscience

created Jan 13, 2011 | popularity 5 / 5 (8) | comments 2 | 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

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

Illuminating the brain: Technique stimulates brain cells, reveals how those neurons influence the rest

There are about 100 billion neurons in the human brain, and each one belongs to elaborate networks that control our behavior, thoughts and emotions. A message from a single neuron can have far-reaching consequences ...

Medicine & Health / Neuroscience

created Jan 28, 2011 | popularity 4.6 / 5 (7) | comments 0 | with audio podcast

Beat it: how the brain perceives rhythm

(PhysOrg.com) -- The brain uses distinct timing mechanisms to measure the duration between the intervals in a sequence of sounds, according to a study funded by the Wellcome Trust.Researchers from the Wellcome ...

Medicine & Health / Neuroscience

created Mar 10, 2011 | popularity 3.7 / 5 (7) | comments 1 | 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

Prolonged space travel causes brain and eye abnormalities in astronauts

Magnetic resonance imaging (MRI) of the eyes and brains of 27 astronauts who have spent prolonged periods of time in space revealed optical abnormalities similar to those that can occur in intracranial hypertension of unknown ...

Space & Earth / Space Exploration

created Mar 13, 2012 | popularity 4.3 / 5 (6) | comments 4

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.