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Abstract #0766

Radial Tagging of MR Images: A Continuous RF Excitation Approach

Abbas Nasiraei Moghaddam1,2, Yutaka Natsuaki3, J. Paul Finn1

1Radiology, UCLA, Los Angeles, CA, United States; 2Caltech, Pasadena, CA, United States; 3Siemens Medical Solutions, Los Angeles, CA, United States

MRI tagging is a well established method for non-invasive measurement of deformation and strain. Radial tagging is a pattern of interest that facilitates the measurement of angular information reflected in shear and twist of the left ventricle. In this work we describe a continuous RF approach for radial tagging that acts on a rotating excitation plane. The sequence has been successfully tested on phantom and also used to acquire short axis images of the left ventricle. The spatial resolution and density of taglines are considerably higher in this approach compared to previous schemes of the radial tagging.