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Cardiac magnetic resonance tissue tracking in right ventricle: Feasibility and normal values.

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 Imaging

journal_title

Magnetic resonance imaging

authors

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 W

doi

10.1016/j.mri.2017.01.007

subject

Has Abstract

pub_date

2017-05-01 00:00:00

pages

189-195

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(17)30007-3

journal_volume

38

pub_type

杂志文章

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