Assessment of left ventricular radial deformation by speckle tracking imaging

Min Pan, Hao Luo, Ashraf Muhammad, Schultheis Judy, Xiaokui Li, David J. Sahn

Research output: Contribution to journalArticle

Abstract

The left ventricular radial strain in the inner and outer layers was evaluated by using two-dimensional speckle tracking imaging (2DS). Twenty-five piglets were studied. The short axis views were acquired. Peak systolic radial strain was measured from 6 circumferential points related to 6 standard segments in the inner and outer layers respectively using 2DS methods. The peak positive first derivative (dp/dt) of left ventricular pressure was compared to the radial strain from 2DS. The inner band showed higher peak radial strain values as compared to the outer band at all of the segments (P<0.0001), but the differences had significance just in anteroseptal, posterior, inferior and septal segments (P<0.05). Good correlation could be found between radial strain of inner and outer layers and peak dp/dt (P<0.001). These preliminary results showed that the degree of local deformation or wall thickening of the ventricular wall in its inner layer was more obvious than its outer layer. It is suggested that the 2DS technique is useful and sensitive for better understanding the regional and global myocardial motion and its relationship to the complex architecture of myocardium.

Original languageEnglish (US)
Pages (from-to)669-672
Number of pages4
JournalJournal of Huazhong University of Science and Technology - Medical Science
Volume29
Issue number5
DOIs
StatePublished - Nov 9 2009

Keywords

  • Echocardiography
  • Radial
  • Speckle tracking imaging
  • Strain

ASJC Scopus subject areas

  • Biochemistry
  • Biomaterials
  • Biomedical Engineering
  • Genetics

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