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J Am Soc Echocardiogr. 2011 Jun;24(6):680-6. doi: 10.1016/j.echo.2011.03.009. Epub 2011 May 6.

Left atrial volume by real-time three-dimensional echocardiography: validation by 64-slice multidetector computed tomography.

Author information

1
Cardiovascular Division, Department of Medicine II, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Japan. miyasaka@hirakata.kmu.ac.jp

Abstract

BACKGROUND:

Left atrial (LA) enlargement has been acknowledged as a significant predictor of cardiovascular morbidity and mortality.

METHODS:

To evaluate the accuracy of two-dimensional and three-dimensional echocardiography for determining LA volume, LA volume measurements by echocardiography were compared with those measured by 64-slice multidetector computed tomography (MDCT) as a reference standard.

RESULTS:

Fifty-seven consecutive patients (mean age, 66 ± 11 years; 59% men) referred to echocardiography and MDCT on the same day were prospectively evaluated. LA volume by three-dimensional echocardiography was correlated closely with that by MDCT (r = 0.95, P < .0001), with 8% underestimation. LA volume by two-dimensional echocardiography was correlated less well with that measured by MDCT (r = 0.86, P < .0001) and consistently underestimated LA volume by 19%, particularly as the left atrium enlarged.

CONCLUSIONS:

LA volume assessment by three-dimensional echocardiography was correlated closely with that measured by MDCT, albeit with an 8% underestimation. Three-dimensional echocardiography is a feasible noninvasive method to evaluate LA volume.

PMID:
21530166
DOI:
10.1016/j.echo.2011.03.009
[Indexed for MEDLINE]

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