News tagged with magnetic resonance
After conducting the largest online intelligence study on record, a Western University-led research team has concluded that the notion of measuring one's intelligence quotient or IQ by a singular, standardized test is highly ...
Neuroscience Dec 19, 2012 | 4.2 / 5 (28) | 24 |
A new study has found that participating in an 8-week meditation training program can have measurable effects on how the brain functions even when someone is not actively meditating. In their report in the ...
Neuroscience Nov 12, 2012 | 4.2 / 5 (24) | 2 |
Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update)
(Medical Xpress)—The existential psychologist Rollo May wrote that "depression is the inability to construct a future"1 while Lionel Tiger stated that "optimism has been central to the process of human e ...
Neuroscience Apr 02, 2013 | 4.5 / 5 (11) | 5 |
A new study by researchers at UT Dallas' Center for Vital Longevity, Duke University, and the University of Michigan has found that the strength of communication between the left and right hemispheres of ...
Neuroscience Aug 29, 2012 | 5 / 5 (9) | 9 |
Face the facts: Neural integration transforms unconscious face detection into conscious face perception
(Medical Xpress)—The apparent ease and immediacy of human perception is deceptive, requiring highly complex neural operations to determine the category of objects in a visual scene. Nevertheless, the human ...
Neuroscience Dec 31, 2012 | 4.8 / 5 (9) | 0 |
You already know it's hard to balance your checkbook while simultaneously reflecting on your past. Now, investigators at the Stanford University School of Medicine—having done the equivalent of wire-tapping ...
Neuroscience Sep 03, 2012 | 4.9 / 5 (8) | 3 |
Differences in the physical connections of the brain are at the root of what make people think and behave differently from one another. Researchers reporting in the February 6 issue of the Cell Press journal ...
Neuroscience Feb 06, 2013 | 3.9 / 5 (9) | 0 |
Researchers have found a novel, non-invasive technique for measuring brain hot spots caused by electromagnetic radiation from mobile phones, according to a study published today.
Medical research Dec 17, 2012 | 3.3 / 5 (10) | 9 |
A contact lens on the bathroom floor, an escaped hamster in the backyard, a car key in a bed of gravel: How are we able to focus so sharply to find that proverbial needle in a haystack? Scientists at the University ...
Neuroscience Apr 21, 2013 | 4.4 / 5 (7) | 2 |
3-year study finds significant differences in white matter processes related to children's reading development
(Medical Xpress)—Researchers from Stanford and Israel's Bar Ilan University have found that differences in the rates at which white matter develops in children's brains may, as they write in their paper ...
Neuroscience Oct 09, 2012 | 4.1 / 5 (7) | 0 |
Wellcome Trust researchers have discovered how the brain assesses confidence in its decisions. The findings explain why some people have better insight into their choices than others.
Neuroscience Dec 09, 2012 | 3.4 / 5 (8) | 0 |
Humans perceive numerous categories of objects and actions, but where are these categories represented spatially in the brain?
Neuroscience Dec 19, 2012 | 4.3 / 5 (6) | 0 |
Training human volunteers to control their own brain activity in precise areas of the brain can enhance fundamental aspects of their visual sensitivity, according to a new study. This non-invasive 'neurofeedback' ...
Neuroscience Dec 04, 2012 | 5 / 5 (5) | 1 |
(Medical Xpress)—The superior capability of experts to rapidly solve problems depends largely on their intuition, and it has long been known that this is related to experience and training. Although many ...
Neuroscience Mar 22, 2013 | 5 / 5 (5) | 0 |
Not everyone is able to be hypnotized, and new research from the Stanford University School of Medicine shows how the brains of such people differ from those who can easily be.
Neuroscience Oct 03, 2012 | 4.6 / 5 (5) | 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
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