Elsayed H. Ibrahim1, Wolfgang Rehwald2, Bradley Sutton3, Sven Zuehlsdorff2, Richard D. White1
1Department of Radiology, University of Florida, Jacksonville, FL, USA; 2Siemens Medical Solutions, Cardiovascular MRI R&D, Chicago, IL, USA; 3Department of Bioengineering, University of Illinois, Urbana-Champaign, IL, USA
Strain-encoding (SENC) MRI was recently introduced for measuring myocardial strain with high resolution and simple post-processing. In a typical scan, data is acquired line-by-line in a rectilinear fashion with long scan-time. In this work, radial and spiral acquisitions were implemented in SENC for improved image-quality. The developed sequences were tested on volunteers and results were evaluated and compared to standard Cartesian acquisition. The measurements from the three techniques showed good agreement by Bland-Altman analysis. Radial and Cartesian images showed similar image-quality. While partial radial acquisition could not achieve high spatial-resolution, spiral acquisition allowed for both high spatial-resolution and short scan-time.