News tagged with mri scan
Congenitally absent optic chiasm: Making sense of visual pathways
(Medical Xpress)—One way to increase our understanding of bilateral brains, like our own, is to inspect their paired sensory systems. In our visual system, the optic nerves normally combine at a place called ...
Neuroscience
Apr 15, 2013 |
5 / 5 (2) |
0
|
Study: Even the smallest stroke can damage brain tissue, impair cognitive function
Blocking a single tiny blood vessel in the brain can harm neural tissue and even alter behavior, a new study from the University of California, San Diego has shown. But these consequences can be mitigated ...
Neuroscience
Dec 16, 2012 |
3.5 / 5 (2) |
1
|
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) |
0
|
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) |
0
|
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
|
Study shows men better at reading emotions in other men than in women
(Medical Xpress)—Researchers at LWL-University Hospital in Bochum, Germany have found that male volunteers looking at photographs of human eyes were better at guessing the "mood" of the person in the picture, ...
Psychology & Psychiatry
Apr 15, 2013 |
5 / 5 (1) |
1
|
Spine MRIs often show harmless 'defects,' study finds
(HealthDay)—Even though expensive MRIs produce very detailed images for assessing back pain, they may not be very good at evaluating results after treatment, research suggests.
Medical research
Mar 13, 2013 |
5 / 5 (1) |
0
|
New MRI method fingerprints tissues and diseases
A new method of magnetic resonance imaging (MRI) could routinely spot specific cancers, multiple sclerosis, heart disease and other maladies early, when they're most treatable, researchers at Case Western Reserve University ...
Medical research
Mar 13, 2013 |
5 / 5 (3) |
0
|
Risk genes for Alzheimer's and mental illness linked to brain changes at birth
Some brain changes that are found in adults with common gene variants linked to disorders such as Alzheimer's disease, schizophrenia, and autism can also be seen in the brain scans of newborns.
Neuroscience
Jan 02, 2013 |
5 / 5 (2) |
0
|
New MRI analysis useful in predicting stroke complications caused by clot-busters
Johns Hopkins researchers have developed a new way of looking at standard MRI scans that more accurately measures damage to the blood-brain barrier in stroke victims, a process they hope will lead to safer, more individualized ...
Cardiology
Dec 20, 2012 |
not rated yet |
0
|
Researchers report progress in quest to create objective method of detecting pain
A method of analyzing brain structure using advanced computer algorithms accurately predicted 76 percent of the time whether a patient had lower back pain in a new study by researchers from the Stanford University School ...
Neuroscience
Dec 17, 2012 |
5 / 5 (3) |
0
|
Listen up, doc: Empathy raises patients' pain tolerance
A doctor-patient relationship built on trust and empathy doesn't just put patients at ease – it actually changes the brain's response to stress and increases pain tolerance, according to new findings from ...
Health
Dec 03, 2012 |
5 / 5 (1) |
0
|
Migraines associated with higher incidence of brain lesions among women; effect on health uncertain
After nearly 10 years of follow-up of study participants who experienced migraines and who had brain lesions indentified via magnetic resonance imaging, women with migraines had a higher prevalence and greater ...
Diseases, Conditions, Syndromes
Nov 13, 2012 |
not rated yet |
0
|
Learning who's the top dog: Study reveals how the brain stores information about social rank
Researchers supported by the Wellcome Trust have discovered that we use a different part of our brain to learn about social hierarchies than we do to learn ordinary information. The study provides clues as to how this information ...
Neuroscience
Nov 08, 2012 |
2.5 / 5 (2) |
0
|
PTSD linked to smaller brain area regulating fear response
Recent combat veterans who are diagnosed with post traumatic stress disorder have significantly smaller volume in an area of the brain critical for regulating fear and anxiety responses, according to research led by scientists ...
Psychology & Psychiatry
Nov 05, 2012 |
not rated yet |
0
|
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.
