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Comparison of magnetic resonance feature tracking for systolic and diastolic strain and strain rate calculation with spatial modulation of magnetization imaging analysis.
- Source :
- Journal of Magnetic Resonance Imaging; Apr2015, Vol. 41 Issue 4, p1000-1012, 13p
- Publication Year :
- 2015
-
Abstract
- Purpose To compare cardiovascular magnetic resonance-feature tracking (CMR-FT) with spatial modulation of magnetization (SPAMM) tagged imaging for the calculation of short and long axis Lagrangian strain measures in systole and diastole. Materials and Methods Healthy controls ( n = 35) and patients with dilated cardiomyopathy ( n = 10) were identified prospectively and underwent steady-state free precession (SSFP) cine imaging and SPAMM imaging using a gradient-echo sequence. A timed offline analysis of images acquired at identical horizontal long and short axis slice positions was performed using CMR-FT and dynamic tissue-tagging (CIMTag2D). Agreement between strain and strain rate (SR) values calculated using these two different methods was assessed using the Bland-Altman technique. Results Across all participants, there was good agreement between CMR-FT and CIMTag for calculation of peak systolic global circumferential strain (−22.7 ± 6.2% vs. −22.5 ± 6.9%, bias 0.2 ± 4.0%) and SR (−1.35 ± 0.42 1/s vs. −1.22 ± 0.42 1/s, bias 0.13 ± 0.33 1/s) and early diastolic global circumferential SR (1.21 ± 0.44 1/s vs. 1.07 ± 0.30 1/s, bias −0.14 ± 0.34 1/s) at the subendocardium. There was satisfactory agreement for derivation of peak systolic global longitudinal strain (−18.1 ± 5.0% vs. −16.7 ± 4.8%, bias 1.3 ± 3.8%) and SR (−1.04 ± 0.29 1/s vs. −0.95 ± 0.32 1/s, bias 0.09 ± 0.26 1/s). The weakest agreement was for early diastolic global longitudinal SR (1.10 ± 0.40 1/s vs. 0.67 ± 0.32 1/s, bias −0.42 ± 0.40 1/s), although the correlation remained significant ( r = 0.42, P < 0.01). CMR-FT generated these data over four times quicker than CIMTag. Conclusion There is sufficient agreement between systolic and diastolic strain measures calculated using CMR-FT and myocardial tagging for CMR-FT to be considered as a potentially feasible and rapid alternative. J. Magn. Reson. Imaging 2015;41:1000-1012. © 2014 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10531807
- Volume :
- 41
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Magnetic Resonance Imaging
- Publication Type :
- Academic Journal
- Accession number :
- 103363366
- Full Text :
- https://doi.org/10.1002/jmri.24623