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Echocardiology pp 131-143 | Cite as

Quantification from Two-Dimensional Echocardiographic Images

  • O. L. Bastiaans
  • R. S. Meltzer
  • J. McGhie
  • P. W. Verbeek
  • J. Roelandt
Chapter
Part of the Developments in Cardiovascular Medicine book series (DICM, volume 13)

Summary

An interactive image-processing computer system was used to extract quantitative information from two-dimensional echocardiographic images. Two short-axis views and three long-axis views were used to obtain an optimal overall representation of the left ventricle. Wall thickening was studied from the short-axis views and wall motion was studied from both short-axis and long-axis views. They were described using a radial coordinate system with a fixed origin. Average amplitudes for motion and thickening were obtained from a group of clinically normal subjects and were displayed graphically, showing the amplitudes in mm at each angle between 0° and 360°. The inter-observer variabilities for these measurements at each angle are displayed in similar graphs. The inter-observer variability in measuring cross-sectional surface area and long-axis length, which are used in volume calculations, was assessed by repeating measurements under equal or different conditions.

Keywords

Wall Motion Average Amplitude Apical View Mitral Level Cardiac Base 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Martinus Nijhoff Publishers, The Hague 1981

Authors and Affiliations

  • O. L. Bastiaans
  • R. S. Meltzer
  • J. McGhie
  • P. W. Verbeek
  • J. Roelandt

There are no affiliations available

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