Researchers evaluated motor skills and cognitive development, visual and hearing function, and brain images of children who had been exposed to the Zika virus during their mothers' pregnancies. By the age of 12 to 18 months, ...
Dec 12, 2018
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Have you ever struggled with a problem that appeared to have no solution, and after turning your attention elsewhere, suddenly received a spark of inspiration?
Dec 07, 2018
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Machine-learning and neuroimaging techniques have been used to accurately distinguish between individuals with Dissociative Identity Disorder (DID) and healthy individuals, on the basis of their brain structure, in new research ...
Dec 06, 2018
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Anxiety disorders are a major medical problem affecting a large population. They can be treated with a range of psychiatric drugs, including a group of substances called benzodiazepines (BZDs). BZDs have been used to treat ...
Dec 05, 2018
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Early detection of the most common form of epilepsy in children is possible through "deep learning," a new machine learning tool that teaches computers to learn by example, according to a new study that includes researchers ...
Nov 27, 2018
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Expect a shot to hurt and it probably will, even if the needle poke isn't really so painful. Brace for a second shot and you'll likely flinch again, even though—second time around—you should know better.
Nov 14, 2018
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USC researchers have identified biomarkers associated with severe birth defects in babies born to women infected with the Zika virus, a discovery that could lead to screening tests and a better understanding about how the ...
Nov 02, 2018
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The ultra-high-field 7T Terra magnetic resonance imaging (MRI) scanner at the USC Mark and Mary Stevens Neuroimaging and Informatics Institute (INI) of the Keck School of Medicine of USC has received FDA approval for clinical ...
Oct 30, 2018
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Osteoarthritis is a disabling disease characterised by joint pain and restricted mobility, affecting especially the elderly. The disease generally progresses slowly, even over decades. Post-traumatic osteoarthritis, however, ...
Oct 18, 2018
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A recent article by a team of international experts on multiple sclerosis (MS) underscores the importance of expanding the knowledge base about the hippocampus in order to better understand the genesis of cognitive deficits ...
Oct 16, 2018
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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.
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