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Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy.

Publication ,  Journal Article
Scholl, D; Kim, HW; Shah, D; Fine, NM; Tandon, S; Thompson, T; Drangova, M; White, JA
Published in: Eur J Radiol
August 2012

BACKGROUND: Visual determination of left ventricular ejection fraction (LVEF) by segmental scoring may be a practical alternative to volumetric analysis of cine magnetic resonance imaging (MRI). The accuracy and reproducibility of this approach for has not been described. The purpose of this study was to validate a novel segmental visual scoring method for LVEF estimation using cine MRI. METHODS: 362 patients with known or suspected cardiomyopathy were studied. A modified wall motion score (mWMS) was used to blindly score the wall motion of all cardiac segments from cine MRI imaging. The same datasets were subjected to blinded volumetric analysis using endocardial contour tracing. The population was then separated into a model cohort (N=181) and validation cohort (N=181), with the former used to derive a regression equation of mWMS versus true volumetric LVEF. The validation cohort was then used to test the accuracy of this regression model to estimate the true LVEF from a visually determined mWMS. Reproducibility testing of mWMS scoring was performed upon a randomly selected sample of 20 cases. RESULTS: The regression equation relating mWMS to true LVEF in the model cohort was: LVEF=54.23-0.5761×mWMS. In the validation cohort this equation produced a strong correlation between mWMS-derived LVEF and true volumetric LVEF (r=0.89). Bland and Altman analysis showed no systematic bias in the LVEF estimated using the mWMS (-0.3231%, 95% limits of agreement -12.22% to 11.58%). Inter-observer and intra-observer reproducibility was excellent (r=0.93 and 0.97, respectively). CONCLUSION: The mWMS is a practical tool for reporting regional wall motion and provides reproducible estimates of LVEF from cine MRI.

Duke Scholars

Published In

Eur J Radiol

DOI

EISSN

1872-7727

Publication Date

August 2012

Volume

81

Issue

8

Start / End Page

e923 / e928

Location

Ireland

Related Subject Headings

  • Ventricular Dysfunction, Left
  • Stroke Volume
  • Severity of Illness Index
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Nuclear Medicine & Medical Imaging
  • Myocardial Ischemia
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging, Cine
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Scholl, D., Kim, H. W., Shah, D., Fine, N. M., Tandon, S., Thompson, T., … White, J. A. (2012). Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy. Eur J Radiol, 81(8), e923–e928. https://doi.org/10.1016/j.ejrad.2012.05.012
Scholl, David, Han W. Kim, Dipan Shah, Nowell M. Fine, Shruti Tandon, Terry Thompson, Maria Drangova, and James A. White. “Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy.Eur J Radiol 81, no. 8 (August 2012): e923–28. https://doi.org/10.1016/j.ejrad.2012.05.012.
Scholl D, Kim HW, Shah D, Fine NM, Tandon S, Thompson T, et al. Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy. Eur J Radiol. 2012 Aug;81(8):e923–8.
Scholl, David, et al. “Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy.Eur J Radiol, vol. 81, no. 8, Aug. 2012, pp. e923–28. Pubmed, doi:10.1016/j.ejrad.2012.05.012.
Scholl D, Kim HW, Shah D, Fine NM, Tandon S, Thompson T, Drangova M, White JA. Validation of a novel modified wall motion score for estimation of left ventricular ejection fraction in ischemic and non-ischemic cardiomyopathy. Eur J Radiol. 2012 Aug;81(8):e923–e928.
Journal cover image

Published In

Eur J Radiol

DOI

EISSN

1872-7727

Publication Date

August 2012

Volume

81

Issue

8

Start / End Page

e923 / e928

Location

Ireland

Related Subject Headings

  • Ventricular Dysfunction, Left
  • Stroke Volume
  • Severity of Illness Index
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Nuclear Medicine & Medical Imaging
  • Myocardial Ischemia
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging, Cine