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
Radiology, Northwestern University, Chicago,
IL, United States,
Northwestern University, Chicago, IL, United States,
R & D, Siemens Healthcare, Chicago, IL, United States,
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
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