open access

Vol 72, No 4 (2014)
Original articles
Published online: 2014-04-09
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Cardiac magnetic resonance feature tracking– a novel method to assess myocardial strain: Comparison with echocardiographic speckle tracking in healthy volunteers and in patients with left ventricular hypertrophy

Stefan Orwat, Aleksander Kempny, Gerhard-Paul Diller, Pia Bauerschmitz, Alexander Ch. Bunck, David Maintz, Robert M. Radke, Helmut Baumgartner
DOI: 10.5603/KP.a2013.0319
·
Kardiol Pol 2014;72(4):363-371.

open access

Vol 72, No 4 (2014)
Original articles
Published online: 2014-04-09

Abstract

Background: Left ventricular longitudinal strain (LV-LS) and strain rate (SR) are sensitive markers of early systolic dysfunction.

Aim: To evaluate the feasibility of a novel, cardiac magnetic resonance (CMR) based method known as feature tracking (FT) for the assessment of strain and SR, and to compare the CMR based results to those obtained on standard transthoracic echocardiography (TTE) in healthy volunteers and in patients with left ventricular hypertrophy cardiomyopathy (HCM).

Methods: Overall, 20 healthy volunteers (ten male, mean age 24 ± 3 years) and 20 consecutive patients with HCM (12 male, mean age 47 ± 19 years) were included. Longitudinal and circumferential strain and SR of the left ventricle were measured on CMR at 1.5 Tesla and TTE and interobserver variability was assessed.

Results: FT measurements were feasible in all subjects. A good agreement between global LV-LS measured on CMR (controls: 20.8 ± 3.0; HCM: 17.6 ± 3.8) and TTE (controls: 19.4 ± 2.1; HCM: 16.6 ± 2.9) was found, while the agreement was worse for circumferential strain and all SR measurements. For the left and right ventricles, interobserver reproducibility was higher for strain measurements compared to SR. Coefficients of variation were lowest for LV-LS (13.2%) by CMR.

Conclusions: FT analysis is a novel CMR based method for the analysis of myocardial strain and SR that is simple and correlates well with the echocardiographic measurements. Since CMR is unaffected by inadequate acoustic windows, FT may represent an attractive alternative to echocardiography in assessing the increasingly important parameters of myocardial deformation.

Abstract

Background: Left ventricular longitudinal strain (LV-LS) and strain rate (SR) are sensitive markers of early systolic dysfunction.

Aim: To evaluate the feasibility of a novel, cardiac magnetic resonance (CMR) based method known as feature tracking (FT) for the assessment of strain and SR, and to compare the CMR based results to those obtained on standard transthoracic echocardiography (TTE) in healthy volunteers and in patients with left ventricular hypertrophy cardiomyopathy (HCM).

Methods: Overall, 20 healthy volunteers (ten male, mean age 24 ± 3 years) and 20 consecutive patients with HCM (12 male, mean age 47 ± 19 years) were included. Longitudinal and circumferential strain and SR of the left ventricle were measured on CMR at 1.5 Tesla and TTE and interobserver variability was assessed.

Results: FT measurements were feasible in all subjects. A good agreement between global LV-LS measured on CMR (controls: 20.8 ± 3.0; HCM: 17.6 ± 3.8) and TTE (controls: 19.4 ± 2.1; HCM: 16.6 ± 2.9) was found, while the agreement was worse for circumferential strain and all SR measurements. For the left and right ventricles, interobserver reproducibility was higher for strain measurements compared to SR. Coefficients of variation were lowest for LV-LS (13.2%) by CMR.

Conclusions: FT analysis is a novel CMR based method for the analysis of myocardial strain and SR that is simple and correlates well with the echocardiographic measurements. Since CMR is unaffected by inadequate acoustic windows, FT may represent an attractive alternative to echocardiography in assessing the increasingly important parameters of myocardial deformation.

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Keywords

feature tracking, strain, cardiac magnetic resonance, echocardiography, left ventricular hypertrophy

About this article
Title

Cardiac magnetic resonance feature tracking– a novel method to assess myocardial strain: Comparison with echocardiographic speckle tracking in healthy volunteers and in patients with left ventricular hypertrophy

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 72, No 4 (2014)

Pages

363-371

Published online

2014-04-09

DOI

10.5603/KP.a2013.0319

Bibliographic record

Kardiol Pol 2014;72(4):363-371.

Keywords

feature tracking
strain
cardiac magnetic resonance
echocardiography
left ventricular hypertrophy

Authors

Stefan Orwat
Aleksander Kempny
Gerhard-Paul Diller
Pia Bauerschmitz
Alexander Ch. Bunck
David Maintz
Robert M. Radke
Helmut Baumgartner

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