Accuracy and feasibility of online 3-dimensional echocardiography for measurement of left ventricular parameters

Jenkins, Carly, Chan, Jonathan, Hanekom, Lizelle and Marwick, Thomas H. (2006) Accuracy and feasibility of online 3-dimensional echocardiography for measurement of left ventricular parameters. Journal of The American Society of Echocardiography, 19 9: 1119-1128.


Author Jenkins, Carly
Chan, Jonathan
Hanekom, Lizelle
Marwick, Thomas H.
Title Accuracy and feasibility of online 3-dimensional echocardiography for measurement of left ventricular parameters
Journal name Journal of The American Society of Echocardiography   Check publisher's open access policy
ISSN 0894-7317
1097-6795
Publication date 2006-09
Sub-type Article (original research)
DOI 10.1016/j.echo.2006.04.002
Volume 19
Issue 9
Start page 1119
End page 1128
Total pages 10
Editor H. Feigenbaum
Place of publication St. Louis, Mo.
Publisher Mosby Inc
Collection year 2006
Language eng
Subject C1
321003 Cardiology (incl. Cardiovascular Diseases)
730106 Cardiovascular system and diseases
Formatted abstract Background:
The availability of automated online software may increase the feasibility of real-time 3-dimensional (3D) echocardiography (3DE) for left ventricular (LV) volume calculation in clinical practice. We sought to compare offline and online approaches with magnetic resonance imaging (MRI).

Methods.
Patients who presented to the clinical laboratory for evaluation of LV parameters (n = 110, 94 men, age 63 +/- 10 years) were studied with 2-dimensional echocardiography, online and offline 3DE, and MRI. The 3DE measurements were obtained by a semiautomated LV border detection based on tracing (online) and edge detection (offline). MRI images were obtained using true free induction steady-state precession during breath hold, with measurement of 3D volumes and ejection fraction (EF).

Results.

All echocardiographic techniques underestimated LV volumes, but EF estimations were similar. The best correlation was between MRI versus offline 3DE. The correlation of online 3DE with MRI was significantly better than 2-dimensional echocardiography (end-diastolic volume (EDV) z = 4.2, end-systolic volume (ESV) z = 4.44, EF z = 4.32; all P <.01). However, correlation of offline 3DE with MRI was significantly better than online 3DE (EDV z = 2.57, P <.05; ESV z = 2.42, P <.05; EF z = 3.82, P <.01). Images were considered to be good quality (endocardium visualized in all walls) in 49 patients; discrepancies between online and offline 3DE and MRI were similar in good- and poor-quality images. Wall-motion abnormalities were present in 98 patients; discrepancies with MRI were similar in patients with and without abnormal wall motion.

Conclusions:

Online measurement of LV volumes is feasible and more accurate than with 2-dimensional echocardiography. Although the offline approach is more accurate, it is also more time-consuming.
Keyword Cardiac & Cardiovascular Systems
Cardiac Resynchronization Therapy
Ejection Fraction
Exercise
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
2007 Higher Education Research Data Collection
School of Medicine Publications
 
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Created: Wed, 15 Aug 2007, 09:57:38 EST