News tagged with mri scanner
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) | 83 |
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) | 2 |
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 |
Life shrouds most choices in mystery. Some people inch toward a comfortable enough spot and stick close to that rewarding status quo. Out to dinner, they order the usual. Others consider their options systematically ...
Neuroscience Feb 08, 2012 | 4.4 / 5 (5) | 1 |
Having too much body fat makes arteries become stiff after middle age, a new study has revealed.
Cardiology May 15, 2013 | 5 / 5 (4) | 0 |
(PhysOrg.com) -- A new study published in the Archives of General Psychiatry describes how the use of functional Magnetic Resonance Imagery, or fMRI, is able to detect and diagnose pedophilia with greater accuracy than c ...
Psychology & Psychiatry Oct 07, 2011 | 1.9 / 5 (10) | 39 |
For the first time, scientists at Carnegie Mellon University's Center for Cognitive Brain Imaging (CCBI) have used a new combination of neural imaging methods to discover exactly how the human brain adapts ...
Neuroscience Jan 16, 2013 | 5 / 5 (3) | 0 |
Children at risk for dyslexia show differences in brain activity on MRI scans even before they begin learning to read, finds a study at Children's Hospital Boston. Since developmental dyslexia responds to early intervention, ...
Psychology & Psychiatry Jan 23, 2012 | 5 / 5 (2) | 0 |
When people – and monkeys – look at faces, a special part of their brain that is about the size of a blueberry "lights up." Now, the most detailed brain-mapping study of the area yet conducted has confirmed ...
Neuroscience Oct 01, 2012 | 5 / 5 (2) | 4 |
TU/e and the Academic Medical Center in Amsterdam have together developed a technique that allows detailed 3D imaging of complex muscle structures of patients. It also allows muscle damage to be detected ...
Medical research Oct 30, 2012 | 4.5 / 5 (2) | 0 |
New evidence indicates that Parkinson's disease is preceded by a period during which healthy regions of the brain take over the functions of damaged ones. Neurologist Bart van Nuenen performed a unique study involving people ...
Parkinson's & Movement disorders Nov 13, 2012 | 4.5 / 5 (2) | 0
A new method is set to help doctors diagnose osteoarthritis at such an early stage that it will be possible to delay the progression of the disease by many years, or maybe even stop it entirely.
Arthritis & Rheumatism Sep 12, 2011 | 5 / 5 (1) | 0
On the quest for safe, reliable and accessible tools to accurately diagnose Alzheimer's disease, researchers from the Perelman School of Medicine at the University of Pennsylvania found a new way of diagnosing and tracking ...
Neuroscience Nov 16, 2011 | 5 / 5 (1) | 0 |
A powerful new imaging technique called High Definition Fiber Tracking (HDFT) will allow doctors to clearly see for the first time neural connections broken by traumatic brain injury (TBI) and other disorders, much like X-rays ...
Surgery Mar 02, 2012 | 5 / 5 (1) | 0 |
Researchers at the Mayo Clinic say a common condition called leukoaraiosis, made up of tiny areas in the brain that have been deprived of oxygen and appear as bright white dots on MRI scans, is not a harmless part of the ...
Neuroscience Aug 13, 2012 | 5 / 5 (1) | 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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