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Comparative Study
. 2021 Feb;37(2):663-674.
doi: 10.1007/s10554-020-02040-y. Epub 2020 Sep 27.

Right ventricular diastolic function in aging: a head-to-head comparison between phase-contrast MRI and Doppler echocardiography

Nadjia Kachenoura #  1 , Emilie Bollache #  2 , Gilles Soulat  3   4 , Stéphanie Clément-Guinaudeau  4 , Golmehr Ashrafpoor  2   4 , Ludivine Perdrix  4 , Benoit Diebold  2   3 , Magalie Ladouceur  3   4 , Elie Mousseaux  3   4
Affiliations
Free article
Comparative Study

Right ventricular diastolic function in aging: a head-to-head comparison between phase-contrast MRI and Doppler echocardiography

Nadjia Kachenoura et al. Int J Cardiovasc Imaging. 2021 Feb.
Free article

Abstract

To evaluate right ventricle (RV) diastolic function from phase-contrast MRI (PC-MRI) in aging. 89 healthy individuals (50 men, 43 ± 15 years) underwent cardiac MRI including 2D PC-MRI (1.5T) and reference Doppler echocardiography of both ventricles on the same day. Conventional echocardiographic parameters were estimated: early (E, cm/s) and atrial (A) peak velocities as well as myocardial early peak longitudinal velocity (E'). PC-MRI images were analyzed using custom software, providing: E', E and A waves along with respective peak flow rates (Ef, Af, mL/s) and filling volume (mL), for both ventricles. Intra- and inter-observer reproducibility was studied in 30 subjects and coefficients of variation (CoV) as well as intra-class correlation coefficients (ICC) were provided. RV diastolic function indices derived from PC-MRI data were reproducible (CoV ≤ 21%, ICC ≥ 0.75) and reliable as reflected by significant associations with left ventricular diastolic function indices assessed using both echocardiography (linear regression Pearson correlation coefficient r ≤ 0.59) and PC-MRI (r ≤ 71). Despite the fair associations between RV echocardiography and PC-MRI (r ≤ 0.25), the highest correlation with age was obtained for MRI Ef/Af ratio (r = - 0.64, p < 0.0001 vs. r = - 0.40, p = 0.0001 for echocardiographic E/A). Among PC-MRI E/A ratios, highest correlations with age were observed for flow rate and mean velocity ratios (r = - 0.61, p < 0.0001) as compared to maximal velocity ratios (r = - 0.56, p < 0.0001). Associations with age for E' were equivalent between PC-MRI (mean velocity: r = - 0.40, p < 0.0001; maximal velocity: r = - 0.36, p = 0.0005) and echocardiography (r = - 0.36, p = 0.0006). Finally, the significant and age-independent associations between RV mass/end-diastolic volume and E' were stronger for PC-MRI (mean velocity: r = - 0.36, p = 0.0006; maximal velocity: r = - 0.28, p = 0.007) than echocardiography (r = - 0.09, p = 0.38). PC-MRI tricuspid inflow and annulus myocardial velocity parameters were reproducible and able to characterize age-related variations in RV diastolic function.

Keywords: Aging; Diastolic function; Phase-contrast MRI; Right ventricle.

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