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The U.S. Food and Drug Administration approved Gadavist (gadobutrol), a gadolinium-based contrast agent, for use in patients undergoing magnetic resonance imaging (MRI) of the central nervous system. Gadavist was approved by the FDA on March 14. It provides contrast-enhanced imaging of the central nervous system, helping to detect and visualize lesions that disrupt the cell barrier that normally separates the brain from the blood stream. It also helps to detect and visualize abnormal blood supply and circulation of the central nervous system.
Food and Drug Administration (Radiologia) - Lun, 21 Marzo 2011
http://www.fda.gov
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To assess whether black blood T2* cardiovascular magnetic resonance is superior to conventional white blood imaging of cardiac iron in patients with thalassaemia major (TM), a study performed both conventional white blood and black blood T2* CMR sequences in 100 TM patients to determine intra and inter-observer variability and presence of artefacts. In 23 patients, 2 separate studies of both techniques were performed to assess interstudy reproducibility. Results showed that black blood T2* CMR has superior reproducibility and reduced imaging artefacts for the assessment of cardiac iron, in comparison with the conventional white blood technique, which make it the preferred technique for clinical practice.
Journal of Cardiovascular Magnetic Resonance (Radiologia) - Lun, 14 Marzo 2011
http://jcmr-online.com/
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A study shows that in patients with no risk factors for pulmonary embolism, the chance of having a computed tomography angiogram result positive for pulmonary embolism is only 0.95%.
Medscape (Radiologia) - Mer, 16 Giugno 2010
http://www.medscape.com
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The radiation exposure from diagnostic medical imaging is low and should not cause patients concern about any future harmful effects.
Baylor College of Medicine (Radiologia) - Lun, 24 Maggio 2010
http://www.bcm.edu
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Used properly, CT scanning is an excellent diagnostic instrument; the benefits of its use outweigh the risks. But CT can be detrimental to health when used inappropriately—eg, for self-referred reassurance scans. So concludes a report published in 2007 by the UK Committee on Medical Aspects of Radiation in the Environment (COMARE). All nine of the recommendations were accepted by the UK Department of Health on April 6, 2010. The committee reviewed the published work on benefits and risks associated with CT scanning in the health assessment of symptom-free individuals. They defined self-referred CT scans as an “individual health assessment”. However, COMARE will not ban or prohibit scans but bring them within a formal regulatory regimen and distinguish them from diagnostic scans. The government legislation that will be amended is the Ionising Radiation (Medical Exposure) Regulations 2000 (IR(ME)R).
The Lancet (Radiologia) - Lun, 19 Aprile 2010
http://www.thelancet.com
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The use of medical imaging procedures has been increasing, and this study estimated the exposure of U.S. patients to low-dose ionizing radiation from these procedures. The exposure was substantial, largely because of radiation from computed tomography and nuclear imaging. The highest average effective dose was attributable to myocardial perfusion imaging, and most imaging occurred in outpatient settings. These data indicate that the use of imaging can result in high radiation doses.
New England Journal of Medicine (Radiologia) - Ven, 28 Agosto 2009
http://www.nejm.org
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Some transdermal patches contain metal and may cause burns to the skin if patients wear them during magnetic resonance imaging (MRI), according to a public health advisory from the US Food and Drug Administration (FDA).
Journal of the American Medical Association (Radiologia) - Ven, 3 Aprile 2009
http://jama.ama-assn.org/
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One of the most amazing advances in the clinical treatment and management of disease is the ability to detect so many things preoperatively using imaging technologies such as 3-dimensional computed tomography, magnetic resonance imaging, or positron emission tomography.
Archives of Surgery (Radiologia) - Ven, 20 Marzo 2009
http://archsurg.ama-assn.org/
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Life-threatening bleeding episodes after cesarean delivery or after surgery for invasive placenta can now be treated with minimally invasive embolization.
Medscape (Radiologia) - Ven, 13 Marzo 2009
http://www.medscape.com
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A review and meta-analysis found that CTA is an effective tool to determine the presence and severity of peripheral arterial disease in patients with intermittent claudication.
Medscape (Radiologia) - Ven, 30 Gennaio 2009
http://www.medscape.com