Women who have been diagnosed with breast cancer in one breast have a higher risk of contracting the disease in their opposite breast as well. A thorough examination of the opposite breast using mammography and ultrasound is therefore common practice. However, many tumours still remain undetected when using mammography.
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When added to a medical workup after a breast cancer diagnosis, magnetic resonance imaging (MRI) scans can significantly improve the chances of detecting cancer in the opposite breast, according to clinical trial results reported in the New England Journal of Medicine. The American College of Radiology Imaging Network, whose biostatistics center is based at Brown University, conducted the study, funded by The National Cancer Institute.
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Scientists' inability to follow the whereabouts of cells injected into the human body has long been a major drawback in developing effective medical therapies. Now, researchers at Johns Hopkins have developed a promising new technique for noninvasively tracking where living cells go after they are put into the body.
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Researchers have used a technique to trace the functional disruption in brain circuitry that causes stroke patients to show a lack of awareness or response to the side of the body opposite to the side of the stroke lesion in the brain. The researchers said their findings shed new light on the neurological details of this "spatial neglect."
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A Georgia Tech researcher has discovered that for tasks involving spatial processing, preparing for the task and performing it are not two separate brain processes, but one - at least when there are a small number of actions to choose from. The research appears online in the journal Brain Research.
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Nanoscale magnets in the form of iron-containing molecules might be used to improve the contrast between healthy and diseased tissue in magnetic resonance imaging (MRI)-as long as the concentration of nanomagnets is carefully managed-according to a new report* by researchers at the National Institute of Standards and Technology (NIST) and collaborators.
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The first researchers to use magnetic resonance imaging (MRI) to study the brains of a large group of babies soon after birth found a small amount of bleeding in and around the brains of one in four babies who were delivered vaginally. The study appears in the February issue of Radiology.
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Results from the most comprehensive study to compare two imaging techniques for the emergency diagnosis of suspected acute stroke show that magnetic resonance imaging (MRI) can provide a more sensitive diagnosis than computed tomography (CT) for acute ischemic stroke. The difference between MRI and CT was attributable to MRI's superiority for detection of acute ischemic stroke-the most common form of stroke, caused by a blood clot.
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The study suggests that magnetic resonance imaging (MRI)-a highly sensitive technique that provides three-dimensional views of tissue at the molecular level-effectively measured macrophages or white blood cells, in the arterial walls of blood vessels.
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