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Abstract #4231

Biventricular strain analysis at 1.5T and 3.0T cardiac MR imaging: a comparison of derived strain values by field strength and temporal resolution.

Peter Mark Smith 1 , Benjamin Freed 2 , B. D. Allen 1 , Bruce S Spottiswoode 3 , M. Carr 1 , Karissa Fortney-Campione 1 , Marie-Pierre Jolly 4 , Christoph Guetter 4 , James C Carr 1 , and Jeremy D Collins 1

1 Radiology, Northwestern University, Chicago, IL, United States, 2 Cardiology, Northwestern University, Chicago, IL, United States, 3 Cardiovascular R & D, Siemens Healthcare, Chicago, IL, United States, 4 Imaging and Computer Vision, Corporate Technology, Siemens Corporation, Princeton, NJ, United States

Myocardial strain may be useful to evaluate early alterations in myocardial structure-function. Deformation field analysis now enables myocardial strain calculation from balanced steady state free precession (bSSFP) cine images. However, the influence of field strength and temporal resolution on strain parameters is unknown. We compared strains from bSSFP cine images at 1.5 T and 3T across a range of temporal resolutions (12.5 to 39.2 msec). There was no significant influence of field strength or temporal resolution on RV longitudinal or LV radial, circumferential, or longitudinal global strain. Our results suggest that myocardial strain can be calculated from routine bSSFP sequences.

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