Right Atrial Deformation Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking Compared with Two-Dimensional Speckle Tracking Echocardiography in Healthy Volunteers

• Published in: Scientific reports Vol. 10; no. 1; p. 5237
• Main Authors: Truong, Vien T., Palmer, Cassady, Young, Michael, Wolking, Sarah, Ngo, Tam N. M., Sheets, Brandy, Hausfeld, Chelsey, Ornella, Allison, Taylor, Michael D., Zareba, Karolina M., Raman, Subha V., Mazur, Wojciech
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 23.03.2020; Nature Publishing Group
• Subjects: 692/4019; 692/700/1421; Adult; Atrial Function; Blood pressure; Body mass index; Echocardiography; Echocardiography - methods; Ejection fraction; Female; Females; Gating; Gender differences; Healthy Volunteers; Heart Atria - diagnostic imaging; Heart rate; Humanities and Social Sciences; Humans; Magnetic Resonance Imaging, Cine - methods; Male; Males; Middle Aged; multidisciplinary; Observer Variation; Pulmonary arteries; Reproducibility; Reproducibility of Results; Science; Science (multidisciplinary); Standard deviation; Variables
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-020-62105-9

Speckle tracking echocardiography (STE), and more recently, cardiovascular magnetic resonance myocardial feature tracking (CMR-FT) provides insight into all phases of atrial function. The aim of our study was to compare all phases of RA strain using CMR-FT and STE and also assess the relationship between RA and LA strain. A total of 61 healthy volunteers with mean age of 45 ± 13 years had adequate tracking for analysis on CMR-FT and 2D-STE. Females had larger RA reservoir strain (39 ± 15% vs. 32 ± 13%, p = 0.046) and conduit strain (26 ± 12% vs. 20 ± 9%, p = 0.03) when compared to males, but was not the case with booster strain (14 ± 7% vs. 12 ± 6%, p = 0.45). In comparison with STE derived strain, the RA reservoir and conduit strain were not significantly different between CMR-FT and the three echocardiography gating methods (p > 0.05 for all). Noticeably, there were no significant differences in strain and strain rate between RA and LA function using CMR-FT (p > 0.05 for all). RA strain and strain rate using CMR-FT had fair and good intra- and inter-observer reproducibility and had superior reproducibility compared to STE derived strain.