Effect of beam directional alterations on left ventricular shortening fraction

Heinz R. Hoenecke, Stanley J. Goldberg, David J. Sahn, Hugh D. Allen, Lilliam M. Valdes-Cruz

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In this study, the dependence on beam direction of the echocardlographlcally derived fractional shortening of the left ventricular minor axis was evaluated. A directtonally oriented, steerable cursor was used to select M-mode lines from a 2-dimensional image at the chordal level. Seven M-mode traces were derived from each image, 1 along the true ventricular meridian and 3 at known deviations on either side of the meridian. M-mode traces, thus derived, all appeared acceptable for measuring wall or cavity dimensions. Results indicate a progressive increase in shortening fraction (p <0.05) for deviations more than 25% of the distance between the meridian and the lateral or medial papillary muscle heads. Decreases in left ventricular dimensions in diastole and systole with progressive deviation from the meridian accounted for the decrease in shortening fraction. Spatial orientation is required for reproducible shortening fraction measurements.

Original languageEnglish (US)
Pages (from-to)1120-1123
Number of pages4
JournalThe American journal of cardiology
Issue number5
StatePublished - Nov 1982
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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