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Right Ventricular Strain and Dyssynchrony Assessment in Arrhythmogenic Right Ventricular Cardiomyopathy: Cardiac Magnetic Resonance Feature-Tracking Study.

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Right Ventricular Strain and Dyssynchrony Assessment in Arrhythmogenic Right Ventricular Cardiomyopathy: Cardiac Magnetic Resonance Feature-Tracking Study.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Prati, Giulio Vitrella, Giancarlo Allocca, Giuseppe Muser, Daniele Buttignoni, Sonja Cukon Piccoli, Gianluca Morocutti, Giorgio Delise, Pietro Pinamonti, Bruno Proclemer, Alessandro Sinagra, Gianfranco Nucifora, Gaetano
Description	Author Affiliation: Prati G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Vitrella G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Allocca G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Muser D ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Buttignoni SC ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Piccoli G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Morocutti G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Delise P ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Pinamonti B ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Proclemer A ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Sinagra G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.)); Nucifora G ( From the Cardiothoracic Department, University Hospital 'Santa Maria della Misericordia,' Udine, Italy (G.P., D.M., G.M., A.P., G.N.))
Abstract	BACKGROUND: Analysis of right ventricular (RV) regional dysfunction by cardiac magnetic resonance (CMR) imaging in arrhythmogenic RV cardiomyopathy (ARVC) may be inadequate because of the complex contraction pattern of the RV. Aim of this study was to determine the use of RV strain and dyssynchrony assessment in ARVC using feature-tracking CMR analysis. METHODS AND RESULTS: Thirty-two consecutive patients with ARVC referred to CMR imaging were included. Thirty-two patients with idiopathic RV outflow tract arrhythmias and 32 control subjects, matched for age and sex to the ARVC group, were included for comparison purpose. CMR imaging was performed to assess biventricular function; feature-tracking analysis was applied to the cine CMR images to assess regional and global longitudinal, circumferential, and radial RV strains and RV dyssynchrony (defined as the SD of the time-to-peak strain of the RV segments). RV global longitudinal strain (-17±5% versus -26±6% versus -29±6%; P<0.001), global circumferential strain (-9±4% versus -12±4% versus -13±5%; P=0.001), and global radial strain (18 [12-26]% versus 22 [15-32]% versus 27 [20-39]%; P=0.015) were significantly lower and SD of the time-to-peak RV strain in all 3 directions were significantly higher among patients with ARVC compared with patients with RV outflow tract arrhythmias and controls. RV global longitudinal strain >-23.2%, SD of the time-to-peak RV longitudinal strain >113.1 ms, and SD of the time-to-peak RV circumferential strain >177.1 ms allowed correct identification of 88%, 75%, and 63% of ARVC patients with no or only minor CMR criteria for ARVC diagnosis. CONCLUSIONS: Strain analysis by feature-tracking CMR helps to objectively quantify global and regional RV dysfunction and RV dyssynchrony in patients with ARVC and provides incremental value over conventional cine CMR imaging.
File Format	HTM / HTML
ISSN	19419651
e-ISSN	19420080
Journal	Circulation: Cardiovascular Imaging
Issue Number	11
Volume Number	8
Language	English
Publisher	American Heart Association
Publisher Date	2015-11-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Diagnostic Imaging Discipline Cardiology Arrhythmogenic Right Ventricular Dysplasia Physiopathology Magnetic Resonance Imaging, Cine Ventricular Dysfunction, Right Complications Case-control Studies Image Interpretation, Computer-assisted Etiology
Content Type	Text
Resource Type	Article
Subject	Radiology, Nuclear Medicine and Imaging Cardiology and Cardiovascular Medicine

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