Three-dimensional surface geometry correction is required for calculating flow by the proximal isovelocity surface area technique

Edward G. Cape*, James D. Thomas, Arthur E. Weyman, Ajit P. Yoganathan, Robert A. Levine

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

This study addressed the hypothesis that surface geometry must be taken into account in proximal convergence calculations of regurgitant flow rate. In vitro models allowed flow to converge within models designed to test derived angle correction equations. Flow was overestimated by the uncorrected equation for surfaces allowing flow to converge over less than a hemisphere and underestimated if flow converged over more than a hemisphere. The extent of deviation depended on the two-dimensional versus three-dimensional nature of the surface (angled flat surfaces versus conical surfaces). Correcting these estimates according to the derived equation produced good agreement for all geometries.

Original languageEnglish (US)
Pages (from-to)585-594
Number of pages10
JournalJournal of the American Society of Echocardiography
Volume8
Issue number5 PART 1
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Three-dimensional surface geometry correction is required for calculating flow by the proximal isovelocity surface area technique'. Together they form a unique fingerprint.

  • Cite this