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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
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Sclerotic aortic valve: flow-sensitive 4-dimensional magnetic resonance imaging reveals 3 distinct flow-pattern

Michael Markl1, Andreas Harloff, Daniela Föll

  • 1University Hospital Freiburg, Department of Diagnostic Radiology. Medical Physics, Hugstetter Strasse 55, 79106 Freiburg, Germany. michael.markl@uniklinik-freiburg.de.

Circulation
|September 5, 2007
PubMed
Abstract

No abstract available in PubMed .

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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...

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