Abstract：
PURPOSE:To investigate right ventricular (RV) strain in patients without identified cardiac pathology using cardiac magnetic resonance tissue tracking (CMR TT). METHODS:A total of 50 consecutive patients with no identified cardiac pathology were analyzed. RV longitudinal and circumferential strain was assessed by CMR TT. The age range was 4-81years with a median of 32years (interquartile range, 15 to 56years). RESULTS:Analysis time per patient was <5min. The peak longitudinal strain (Ell) was -22.11±3.51%. The peak circumferential strains (Ecc) for global, basal, mid-cavity and apical segments were as follows: -11.69±2.25%, -11.00±2.45%, -11.17±3.36%, -12.90±3.34%. There were significant gender differences in peak Ecc at the base (P=0.04) and the mid-cavity (P=0.03) with greater deformation in females than in males. On Bland-Altman analysis, peak Ell (mean bias, 0.22±1.67; 95% CI -3.05 to 3.49) and mid-cavity Ecc (mean bias, 0.036±1.75; 95% CI, -3.39 to 3.47) had the best intra-observer agreement and inter-observer agreement, respectively. CONCLUSIONS:RV longitudinal and circumferential strains can be quickly assessed with good intra-observer and inter-observer variability using TT.
journal_name
Magn Reson Imagingjournal_title
Magnetic resonance imagingauthors
Truong VT,Safdar KS,Kalra DK,Gao X,Ambach S,Taylor MD,Moore R,Taylor RJ,Germann J,Toro-Salazar O,Jefferies JL,Bartone C,Raman SV,Ngo T,Mazur Wdoi
10.1016/j.mri.2017.01.007subject
Has Abstractpub_date
2017-05-01 00:00:00pages
189-195eissn
0730-725Xissn
1873-5894pii
S0730-725X(17)30007-3journal_volume
38pub_type
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