(HealthDay)—For patients with a primary diagnosis of hepatocellular cancer (HCC), imaging of the pelvis rarely provides additional pathologic information, according to a study published online June 14 in the Journal of ...
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Swedish researchers report in an article published in the Journal of Alzheimer´s Disease that 46 percent of patients who are diagnosed with Alzheimer´s disease in Sweden live alone in their homes, in particular older women.
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(HealthDay)—There is no association between average 24-hour urine sodium levels and conversion from clinically isolated syndrome (CIS) to clinically definite multiple sclerosis (MS), according to a study published online ...
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"Oh, my aching back!" It's not an uncommon complaint heard from both men and women as they age and experience lumbar disc degeneration. Now a new study out of China suggests that menopause is associated with severity of disc ...
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About 20 percent of children in the United States have difficulty learning to read, and educators have devised a variety of interventions to try to help them. Not every program helps every student, however, in part because ...
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Dieters who go vegetarian not only lose weight more effectively than those on conventional low-calorie diets but also improve their metabolism by reducing muscle fat, a new study published in the Journal of the American College ...
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Garry Buchko and his colleagues are at the front line battling some of the most fearsome enemies that humanity has ever known: Tuberculosis. Pneumonia. Ebola. Plague. Botulism.
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While reading to children has many benefits, simply speaking the words aloud may not be enough to improve cognitive development in preschoolers.
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Challenging recent claims that inflated false positive rates in the analysis of functional magnetic resonance imaging (fMRI) of the brain may negate the findings of countless previous studies, a new review of this controversial ...
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The brain waves of healthy newborns – which appear more abnormal than those of severe stroke victims – could be used to accurately predict which babies will have neurodevelopmental disorders.
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
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