Improvement in strain concordance between two major vendors after the strain standardization initiative

Hong Yang, Thomas H. Marwick, Nobuaki Fukuda, Hiroki Oe, Makoto Saito, James D. Thomas, Kazuaki Negishi

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Background Disagreement of strain measurements among different vendors has provided an obstacle to the clinical use of strain. A joint standardization task force between professional societies and industry was initiated to reduce intervendor variability of strain. Although feedback from this process has been used in software upgrades, little is known about the effects of efforts to improve conformity. The aim of this study was to assess whether intervendor agreement for global longitudinal strain (GLS) has improved after standardization initiatives. Methods Eighty-two subjects (mean age, 52 ± 21 years; 55% men) prospectively underwent two sequential examinations using two most common ultrasound systems (Vivid E9 and iE33). GLS was calculated using proprietary software (EchoPAC-PC BT12 [E12] and BT13 [E13] vs QLAB version 8.0 [Q8], QLAB version 9.0 [Q9], and QLAB version 10.0 [Q10]). Agreements in GLS were evaluated with Bland-Altman plots. Coefficients of variation (CVs) were compared using the Friedman test and compared with CVs of left ventricular volumes and ejection fraction (LVEF). Results Median GLS using E12 was -19.2% (interquartile range [IQR], -15.2% to -23.2%), compared with -19.3% (IQR, -14.9% to -23.7%) for E13, -15.7% (IQR, -11.4% to -20%) for Q8, -19% (IQR, -15.7% to -22.3%) for Q9, and -18.7% (IQR, -15.7% to -21.7%) for Q10. The CVs of prestandardization GLS (12 ± 8% [E12/Q8] and 14 ± 8 [E13/Q8]) were significantly larger than that of LVEF (5 ± 5) (P

Original languageEnglish
Pages (from-to)642-648.e6
JournalJournal of the American Society of Echocardiography
Volume28
Issue number6
DOIs
Publication statusPublished - Jun 1 2015

Fingerprint

Stroke Volume
Software
Advisory Committees
Industry
Joints

Keywords

  • Concordance
  • EACVI-ASE strain standardization
  • Ejection fraction
  • Strain
  • Vendor difference

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Cite this

Improvement in strain concordance between two major vendors after the strain standardization initiative. / Yang, Hong; Marwick, Thomas H.; Fukuda, Nobuaki; Oe, Hiroki; Saito, Makoto; Thomas, James D.; Negishi, Kazuaki.

In: Journal of the American Society of Echocardiography, Vol. 28, No. 6, 01.06.2015, p. 642-648.e6.

Research output: Contribution to journalArticle

Yang, Hong ; Marwick, Thomas H. ; Fukuda, Nobuaki ; Oe, Hiroki ; Saito, Makoto ; Thomas, James D. ; Negishi, Kazuaki. / Improvement in strain concordance between two major vendors after the strain standardization initiative. In: Journal of the American Society of Echocardiography. 2015 ; Vol. 28, No. 6. pp. 642-648.e6.
@article{1a494eeb52ff47bb95a567618213c6f2,
title = "Improvement in strain concordance between two major vendors after the strain standardization initiative",
abstract = "Background Disagreement of strain measurements among different vendors has provided an obstacle to the clinical use of strain. A joint standardization task force between professional societies and industry was initiated to reduce intervendor variability of strain. Although feedback from this process has been used in software upgrades, little is known about the effects of efforts to improve conformity. The aim of this study was to assess whether intervendor agreement for global longitudinal strain (GLS) has improved after standardization initiatives. Methods Eighty-two subjects (mean age, 52 ± 21 years; 55{\%} men) prospectively underwent two sequential examinations using two most common ultrasound systems (Vivid E9 and iE33). GLS was calculated using proprietary software (EchoPAC-PC BT12 [E12] and BT13 [E13] vs QLAB version 8.0 [Q8], QLAB version 9.0 [Q9], and QLAB version 10.0 [Q10]). Agreements in GLS were evaluated with Bland-Altman plots. Coefficients of variation (CVs) were compared using the Friedman test and compared with CVs of left ventricular volumes and ejection fraction (LVEF). Results Median GLS using E12 was -19.2{\%} (interquartile range [IQR], -15.2{\%} to -23.2{\%}), compared with -19.3{\%} (IQR, -14.9{\%} to -23.7{\%}) for E13, -15.7{\%} (IQR, -11.4{\%} to -20{\%}) for Q8, -19{\%} (IQR, -15.7{\%} to -22.3{\%}) for Q9, and -18.7{\%} (IQR, -15.7{\%} to -21.7{\%}) for Q10. The CVs of prestandardization GLS (12 ± 8{\%} [E12/Q8] and 14 ± 8 [E13/Q8]) were significantly larger than that of LVEF (5 ± 5) (P",
keywords = "Concordance, EACVI-ASE strain standardization, Ejection fraction, Strain, Vendor difference",
author = "Hong Yang and Marwick, {Thomas H.} and Nobuaki Fukuda and Hiroki Oe and Makoto Saito and Thomas, {James D.} and Kazuaki Negishi",
year = "2015",
month = "6",
day = "1",
doi = "10.1016/j.echo.2014.12.009",
language = "English",
volume = "28",
pages = "642--648.e6",
journal = "Journal of the American Society of Echocardiography",
issn = "0894-7317",
publisher = "Mosby Inc.",
number = "6",

}

TY - JOUR

T1 - Improvement in strain concordance between two major vendors after the strain standardization initiative

AU - Yang, Hong

AU - Marwick, Thomas H.

AU - Fukuda, Nobuaki

AU - Oe, Hiroki

AU - Saito, Makoto

AU - Thomas, James D.

AU - Negishi, Kazuaki

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Background Disagreement of strain measurements among different vendors has provided an obstacle to the clinical use of strain. A joint standardization task force between professional societies and industry was initiated to reduce intervendor variability of strain. Although feedback from this process has been used in software upgrades, little is known about the effects of efforts to improve conformity. The aim of this study was to assess whether intervendor agreement for global longitudinal strain (GLS) has improved after standardization initiatives. Methods Eighty-two subjects (mean age, 52 ± 21 years; 55% men) prospectively underwent two sequential examinations using two most common ultrasound systems (Vivid E9 and iE33). GLS was calculated using proprietary software (EchoPAC-PC BT12 [E12] and BT13 [E13] vs QLAB version 8.0 [Q8], QLAB version 9.0 [Q9], and QLAB version 10.0 [Q10]). Agreements in GLS were evaluated with Bland-Altman plots. Coefficients of variation (CVs) were compared using the Friedman test and compared with CVs of left ventricular volumes and ejection fraction (LVEF). Results Median GLS using E12 was -19.2% (interquartile range [IQR], -15.2% to -23.2%), compared with -19.3% (IQR, -14.9% to -23.7%) for E13, -15.7% (IQR, -11.4% to -20%) for Q8, -19% (IQR, -15.7% to -22.3%) for Q9, and -18.7% (IQR, -15.7% to -21.7%) for Q10. The CVs of prestandardization GLS (12 ± 8% [E12/Q8] and 14 ± 8 [E13/Q8]) were significantly larger than that of LVEF (5 ± 5) (P

AB - Background Disagreement of strain measurements among different vendors has provided an obstacle to the clinical use of strain. A joint standardization task force between professional societies and industry was initiated to reduce intervendor variability of strain. Although feedback from this process has been used in software upgrades, little is known about the effects of efforts to improve conformity. The aim of this study was to assess whether intervendor agreement for global longitudinal strain (GLS) has improved after standardization initiatives. Methods Eighty-two subjects (mean age, 52 ± 21 years; 55% men) prospectively underwent two sequential examinations using two most common ultrasound systems (Vivid E9 and iE33). GLS was calculated using proprietary software (EchoPAC-PC BT12 [E12] and BT13 [E13] vs QLAB version 8.0 [Q8], QLAB version 9.0 [Q9], and QLAB version 10.0 [Q10]). Agreements in GLS were evaluated with Bland-Altman plots. Coefficients of variation (CVs) were compared using the Friedman test and compared with CVs of left ventricular volumes and ejection fraction (LVEF). Results Median GLS using E12 was -19.2% (interquartile range [IQR], -15.2% to -23.2%), compared with -19.3% (IQR, -14.9% to -23.7%) for E13, -15.7% (IQR, -11.4% to -20%) for Q8, -19% (IQR, -15.7% to -22.3%) for Q9, and -18.7% (IQR, -15.7% to -21.7%) for Q10. The CVs of prestandardization GLS (12 ± 8% [E12/Q8] and 14 ± 8 [E13/Q8]) were significantly larger than that of LVEF (5 ± 5) (P

KW - Concordance

KW - EACVI-ASE strain standardization

KW - Ejection fraction

KW - Strain

KW - Vendor difference

UR - http://www.scopus.com/inward/record.url?scp=84930089180&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930089180&partnerID=8YFLogxK

U2 - 10.1016/j.echo.2014.12.009

DO - 10.1016/j.echo.2014.12.009

M3 - Article

C2 - 25636366

AN - SCOPUS:84930089180

VL - 28

SP - 642-648.e6

JO - Journal of the American Society of Echocardiography

JF - Journal of the American Society of Echocardiography

SN - 0894-7317

IS - 6

ER -