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- W2032889291 abstract "Regional deformation abnormalities in the heart wall provide a good indicator of ischemia. Myocardial tagging with magnetic resonance imaging is a new method of assessing heart wall motion during contraction. Current methods of myocardial tagging either do not provide two-dimensional information or lack a coordinate system well adapted to the morphology of the heart. In this article, the authors describe a new tagging method that provides a true polar coordinate system, with both radial and angular dimensions. This is accomplished with use of a section-selective version of spatially modulated magnetization resulting in striped tags (STAGs). These STAG planes are placed in the myocardium in a star pattern so that they intersect on the long axis of the heart and stripes appear through the width of the heart wall. In the short-axis view during contraction, rotation around the long axis yields angular information such as shear and twist, while separation of the stripes within the myocardium permits measurement of radial thickening. Therefore, this method provides a coordinate system for calculating two-dimensional strain that is adapted to the morphology of the left ventricle." @default.
- W2032889291 created "2016-06-24" @default.
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- W2032889291 date "1990-12-01" @default.
- W2032889291 modified "2023-09-23" @default.
- W2032889291 title "Myocardial tagging in polar coordinates with use of striped tags." @default.
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- W2032889291 doi "https://doi.org/10.1148/radiology.177.3.2243987" @default.
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