News tagged with mri
Psychopaths' brains show differences in structure and function
Images of prisoners' brains show important differences between those who are diagnosed as psychopaths and those who aren't, according to a new study led by University of Wisconsin-Madison researchers.
Neuroscience
Nov 22, 2011 |
4.8 / 5 (18) |
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Stanford study vanquishes social anxieties without drugs
For most of his life, 24-year-old Steven Bringas so feared humiliating himself if he spoke that only an emergency would get him to enter a store.
Psychology & Psychiatry
Aug 19, 2011 |
4.7 / 5 (17) |
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IQ can rise or fall significantly during adolescence, brain scans confirm
IQ, the standard measure of intelligence, can increase or fall significantly during our teenage years, according to research funded by the Wellcome Trust, and these changes are associated with changes to the ...
Neuroscience
Oct 19, 2011 |
4.6 / 5 (15) |
5
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Maltreated children show same pattern of brain activity as combat soldiers
Children exposed to family violence show the same pattern of activity in their brains as soldiers exposed to combat, new research has shown.
Psychology & Psychiatry
Dec 05, 2011 |
5 / 5 (9) |
5
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Chinese mindfulness meditation prompts double positive punch in brain white matter
Scientists studying the Chinese mindfulness meditation known as integrative body-mind training (IBMT) say they've confirmed and expanded their findings on changes in structural efficiency of white matter in the brain that ...
Neuroscience
Jun 11, 2012 |
5 / 5 (9) |
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Evidence builds that meditation strengthens the brain, researchers say
Earlier evidence out of UCLA suggested that meditating for years thickens the brain (in a good way) and strengthens the connections between brain cells. Now a further report by UCLA researchers suggests yet another benefit.
Neuroscience
Mar 14, 2012 |
5 / 5 (8) |
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MRI Fingerprinting: the 12-second scan and a whole lot more
(Medical Xpress)—Getting an MRI can be an uncomfortable experience, particularly for a 40-minute or longer scan. In the US at least, it is also quite expensive—the same kind of scan costing just over ...
Medical research
Mar 21, 2013 |
4.8 / 5 (8) |
3
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Keeping track of reality: Why some of us better at remembering what really happened
A structural variation in a part of the brain may explain why some people are better than others at distinguishing real events from those they might have imagined or been told about, researchers have found.
Neuroscience
Oct 04, 2011 |
4.6 / 5 (8) |
5
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Psychopaths are not neurally equipped to have concern for others, study shows
Prisoners who are psychopaths lack the basic neurophysiological "hardwiring" that enables them to care for others, according to a new study by neuroscientists at the University of Chicago and the University of New Mexico.
Psychology & Psychiatry
Apr 24, 2013 |
4.4 / 5 (8) |
9
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Study explains how shock therapy might ease severe depression
(HealthDay) -- A small new study gives insight into how electroshock therapy, an effective yet poorly understood treatment for severe depression, affects the brains of depressed people.
Psychology & Psychiatry
Mar 19, 2012 |
4.1 / 5 (8) |
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Acid in the brain: Team develops new way to look at brain function
University of Iowa neuroscientist John Wemmie, M.D., Ph.D., is interested in the effect of acid in the brain. His studies suggest that increased acidity or low pH, in the brain is linked to panic disorders, ...
Neuroscience
May 18, 2012 |
5 / 5 (6) |
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Researchers uncover how the brain processes faces
Each time you see a person that you know, your brain rapidly and seemingly effortlessly recognizes that person by his or her face.
Neuroscience
May 31, 2011 |
4 / 5 (7) |
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MRI study finds that depression uncouples brain's hate circuit
A new study using MRI scans, led by Professor Jianfeng Feng, from the University of Warwick's Department of Computer Science, has found that depression frequently seems to uncouple the brain's "Hate Circuit". ...
Psychology & Psychiatry
Oct 04, 2011 |
5 / 5 (5) |
4
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Brain center for social choices discovered in a poker study
Although many areas of the human brain are devoted to social tasks like detecting another person nearby, a new study has found that one small region carries information only for decisions during social interactions. ...
Neuroscience
Jul 05, 2012 |
5 / 5 (5) |
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Experimental compound improves memory in mice with multiple sclerosis
Johns Hopkins researchers report the successful use of a form of MRI to identify what appears to be a key biochemical marker for cognitive impairment in the brains of people with multiple sclerosis (MS). In follow-up experiments ...
Neuroscience
Nov 19, 2012 |
5 / 5 (5) |
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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.
