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Two-dimensional Echocardiographic Automated Border Detection Accurately Reflects Changes in Left Ventricular Volume

Gorcsan, J and Morita, S and Mandarino, WA and Deneault, LG and Kawai, A and Kormos, RL and Griffith, BP and Pinsky, MR (1993) Two-dimensional Echocardiographic Automated Border Detection Accurately Reflects Changes in Left Ventricular Volume. Journal of the American Society of Echocardiography, 6 (5). 482 - 489. ISSN 0894-7317

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Abstract

The objective of this study was to determine the relationship of on-line measurements of left ventricular cavity area generated by echocardiographic automated border detection to true volume measured by an intraventricular balloon in an isovolumically contracting isolated canine heart preparation. Seven excised dog hearts had placement of an intraventricular balloon and were perfused in an ex vivo apparatus. Left ventricular area data from the midventricular short-axis plane and pressure data were recorded on a computer through a customized hardware and software interface with the ultrasound system. Left ventricular volumes were varied from 5 ml to maximal values (30 to 40 ml) at 1- ' ' 'ter increments. Three increasing and decreasing volume ramps were analyzed on each of seven hearts for a total of 1260 simultaneous measurements. Linear regression analysis correlated mean automated border detection area with absolute volume from each preparation. A predominantly linear relationship was observed with an average correlation of r = 0.97 (y = 0.16x - 0.69, SEE = 0.31 cm2, p < 0.01). Left ventricular area measures for six of seven dogs varied little during isovolumic contraction (<0.4 cm2) but did show a systematic cardiac cycle-related variability in one dog (28% change in area, maximum to muumum, over all volumes). In conclusion, the relationship between cross-sectional area and left ventricular volume was predominantly linear and varied little during isovolumic contractions in the normal canine left ventricle. Echocardiographic automated border detection appears to be a promising method to reflect changes in left ventricular volume. © 1993, American Society of Echocardiography. All rights reserved.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Gorcsan, Jgorcsan@pitt.eduGORCSAN
Morita, S
Mandarino, WA
Deneault, LG
Kawai, A
Kormos, RLkormos@pitt.eduKORMOS
Griffith, BP
Pinsky, MRpinsky@pitt.eduPINSKY
Date: 1 January 1993
Date Type: Publication
Journal or Publication Title: Journal of the American Society of Echocardiography
Volume: 6
Number: 5
Page Range: 482 - 489
DOI or Unique Handle: 10.1016/s0894-7317(14)80467-7
Schools and Programs: School of Medicine > Critical Care Medicine
Refereed: Yes
ISSN: 0894-7317
PubMed ID: 8260166
Date Deposited: 01 Mar 2012 20:37
Last Modified: 24 Jun 2018 03:55
URI: http://d-scholarship.pitt.edu/id/eprint/11134

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