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Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function.

Publication ,  Journal Article
Andersen, MV; Moore, C; Søgaard, P; Friedman, D; Atwater, BD; Arges, K; LeFevre, M; Struijk, JJ; Kisslo, J; Schmidt, SE; von Ramm, OT
Published in: Ultrasound Med Biol
May 2019

Recently, we developed a high-frame-rate echocardiographic imaging system capable of acquiring images at rates up to 2500 per second. High imaging rates were used to quantify longitudinal strain parameters in patients with echocardiographically normal function. These data can serve as a baseline for comparing strain parameters in disease states. The derived timing data also reveal the propagation of mechanical events in the left ventricle throughout the cardiac cycle. High-frame-rate echocardiographic images were acquired from 17 patients in the apical four-chamber view using Duke University's phased array ultrasound system, T5. B-Mode images were acquired at 500-1000 images per second by employing 16:1 or 32:1 parallel processing in receive, a scan depth ≤14 cm and an 80° field of view with a 3.5-MegaHertZ (MHz), 96-element linear array. The images were analyzed using a speckle tracking algorithm tailored for high-frame-rate echocardiographic images developed at Aalborg and Duke University. Four specific mechanical events were defined using strain curves from six regions along the myocardial contour of the left ventricle. The strain curves measure the local deformation events of the myocardium and are independent of the overall cardiac motion. We observed statistically significant differences in the temporal sequence among different myocardial segments for the first mechanical event described, myocardial tissue shortening onset (p < 0.01). We found that the spatial origin of tissue shortening was located near the middle of the interventricular septum in patients with echocardiographically normal function. The quantitative parameters defined here, based on high-speed strain measurements in patients with echocardiographically normal function, can serve as a means of assessing degree of contractile abnormality in the myocardium and enable the identification of contraction propagation. The relative timing pattern among specific events with respect to the Q wave may become an important new metric in assessing cardiac function and may, in turn, improve diagnosis and prognosis.

Duke Scholars

Published In

Ultrasound Med Biol

DOI

EISSN

1879-291X

Publication Date

May 2019

Volume

45

Issue

5

Start / End Page

1197 / 1207

Location

England

Related Subject Headings

  • Ventricular Function
  • Time
  • Reference Values
  • Male
  • Image Interpretation, Computer-Assisted
  • Humans
  • Heart Ventricles
  • Female
  • Evaluation Studies as Topic
  • Echocardiography
 

Citation

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Andersen, M. V., Moore, C., Søgaard, P., Friedman, D., Atwater, B. D., Arges, K., … von Ramm, O. T. (2019). Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function. Ultrasound Med Biol, 45(5), 1197–1207. https://doi.org/10.1016/j.ultrasmedbio.2018.11.007
Andersen, Martin V., Cooper Moore, Peter Søgaard, Daniel Friedman, Brett D. Atwater, Kristine Arges, Melissa LeFevre, et al. “Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function.Ultrasound Med Biol 45, no. 5 (May 2019): 1197–1207. https://doi.org/10.1016/j.ultrasmedbio.2018.11.007.
Andersen MV, Moore C, Søgaard P, Friedman D, Atwater BD, Arges K, et al. Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function. Ultrasound Med Biol. 2019 May;45(5):1197–207.
Andersen, Martin V., et al. “Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function.Ultrasound Med Biol, vol. 45, no. 5, May 2019, pp. 1197–207. Pubmed, doi:10.1016/j.ultrasmedbio.2018.11.007.
Andersen MV, Moore C, Søgaard P, Friedman D, Atwater BD, Arges K, LeFevre M, Struijk JJ, Kisslo J, Schmidt SE, von Ramm OT. Quantitative Parameters of High-Frame-Rate Strain in Patients with Echocardiographically Normal Function. Ultrasound Med Biol. 2019 May;45(5):1197–1207.
Journal cover image

Published In

Ultrasound Med Biol

DOI

EISSN

1879-291X

Publication Date

May 2019

Volume

45

Issue

5

Start / End Page

1197 / 1207

Location

England

Related Subject Headings

  • Ventricular Function
  • Time
  • Reference Values
  • Male
  • Image Interpretation, Computer-Assisted
  • Humans
  • Heart Ventricles
  • Female
  • Evaluation Studies as Topic
  • Echocardiography